CN106515150A - Hot-pressed wood-plastic composite with sandwich structure and manufacturing method thereof - Google Patents
Hot-pressed wood-plastic composite with sandwich structure and manufacturing method thereof Download PDFInfo
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- CN106515150A CN106515150A CN201610948241.8A CN201610948241A CN106515150A CN 106515150 A CN106515150 A CN 106515150A CN 201610948241 A CN201610948241 A CN 201610948241A CN 106515150 A CN106515150 A CN 106515150A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
- B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/025—Particulate layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/546—Flexural strength; Flexion stiffness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
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Abstract
The invention provides a hot-pressed wood-plastic composite with a sandwich structure, relates to a wood-plastic composite and specifically relates to the wood-plastic composite with the sandwich structure. The invention aims to solve the problems that the reinforcing and toughening effects cannot be simultaneously achieved, the comprehensive mechanical property is poor, the material density is high, the cost is high and the recycled waste plastic is difficult to be recycled when the wood-plastic composite taking a present thermoplastic polymer as a substrate is used as a panel. The wood-plastic composite comprises a thermoplastic polymer plastic core-layer material, an upper surface layer of wood-plastic material and a lower surface layer of wood-plastic material. The wood-plastic composite with the sandwich structure is obtained by hot-pressing in the manner of layering laminating. According to the invention, the problems of poor comprehensive mechanical property, high density and high cost of the wood-plastic composite based on the thermoplastic polymer can be solved. The invention also provides a preparation method for the wood-plastic composite with the sandwich structure.
Description
Technical field
The present invention relates to material processing field, and in particular to a kind of hot pressing sandwich structure wood plastic composite, the present invention is also
It is related to a kind of manufacture method of hot pressing sandwich structure wood plastic composite.
Background technology
Wood plastic composite (WPC) is a kind of Novel environment-friendlymaterial material.With raw material sources are wide, low price, dimensionally stable
Property good, heat resistance is preferable, repeatable processing and the characteristics of recycle.Be widely used in building, logistics, decoration, furniture,
The fields such as gardens.The development of wood plastic composite, not only contributes to protect forest resources, and is on the rise in can also solving city
Plastics de-referencing problem, be conducive to society and economic sustainable development.
Pressure sintering is to prepare one of method of wood-plastic composite panel, and the string and plastic raw materials of drying regime are passed through
Or do not carry out mating formation by granulation hot-forming, it is ensured that the form of string, improves raw material availability, processes breadth
Larger-size sheet material.During but conventional thermocompression method prepares Wood plastic boards, due to depositing for the uneven first-class factor of heat transfer rate
, cause string and plastics be sufficiently mixed unlike extrusion process, sheet material inhomogeneity obtained in hot pressing can shadow
Ring mechanics and other physical properties.
Wood plastic boards obtained in conventional thermocompression, it is low to there is impact flexibility, the shortcomings of easily crushing, and with the increasing of wood powder content
Plus, intensity and modulus can drastically decline after first increasing to a certain extent, and toughness reduces becoming apparent from, if reduce wood powder contained
Amount, impact flexibility to a certain degree can be improved, and intensity and modulus then do not reach requirement.There is researcher in the past by material
Add the reinforcing fibers such as glass fibre, aramid fiber, carbon fiber in a variety of manners to improve the performance of wood plastic composite, but
Above fiber cost is high, and process produces toxic gas, and it is compound after material not recoverable, therefore it is a kind of it is simple, have
It is wood that effect, cheap and environmentally friendly method are used for solving the contradictory problems of impact flexibility and strength modulus in hot pressing Wood plastic boards
Modeling industry problem demanding prompt solution.
The content of the invention
The present invention is to solve series of problems present in prior art, and then proposes that a kind of hot pressing sandwich structure wood moulding is multiple
Condensation material and its manufacture method, the hot pressing sandwich structure wood plastic composite include the wood and plastic composite bed of material, the wood plastics composite
Material layer at least includes upper epidermis Wood-plastic material layer and layer Wood-plastic material layer, the upper epidermis Wood-plastic material layer and layer
Between Wood-plastic material layer also have core material, heat melting pressing by way of, the core material with it is described on
Top layer Wood-plastic material layer and layer Wood-plastic material layer form hot pressing sandwich structure, and the core material is flexible macromolecule material
Material is obtained, and constitutes the flexible intercalation of the hot pressing sandwich structure.The invention has the beneficial effects as follows：Glass is a kind of frangible material
Material, but Sandwich bulletproof glass or glass for vehicle window have higher impact resistance, are not easy to crush.This is because at two
It is provided with the intercalation of one layer of flexible macromolecule between thin glass layer, and ensures well to cohere between the two, so in attack or hits
When hitting event generation, laminated glass will not typically occur the catastrophic failure of comminuted, penetrability；The present invention uses for reference bulletproof glass
The design principle of this laminarization " composite ", by using a kind of simple and effective sandwich structure, flexible macromolecule being moulded
Material prepares the wood-plastic composite panel with sandwich structure as sandwich layer, and a kind of hot pressing sandwich structure wood moulding proposed by the present invention is multiple
Condensation material comprehensive mechanical property, especially impact flexibility are obviously improved, and reduce the density of sheet material, make Wood plastic boards in template field
Application especially in building template is more suitable, the invention provides a kind of method for improving wood-plastic composite performance；With not
Bending strength of the present invention of wood plastic composite containing hot pressing sandwich structure comparing improves 10%-50%, and bending modulus improves 5%-
50%, impact strength improves 20-80% so that wood plastic composite mechanics realizes activeness and quietness simultaneously and is modified.
Further, described core material is so that, obtained in thermoplastic polymer, the thermoplastic polymer includes gathering
The mixture of one or more therein such as ethene, polypropylene, polyvinyl chloride and polystyrene, described thermoplastic polymer is
Virgin material or reclaimed materials.
Further, described core material is the mixture system with thermoplastic polymer and compatilizer according to a certain percentage
, the thermoplastic polymer include polyethylene, polypropylene, polyvinyl chloride and polystyrene etc. it is therein one or more
Mixture, described thermoplastic polymer are virgin material or reclaimed materials；Described compatilizer is the polyethylene of maleic anhydride grafting, horse
One kind or wherein several mixtures in maleic anhydride grafted polypropylene, titanate esters, isocyanide ester, silane.
Further, thermoplastic, polymeric materials of the thermoplastic polymer for film-form, sheet or tabular.
Further, the thermoplastic polymer reclaimed materials holds to reclaim agricultural film, preservative film, packaging film, polybag, plastics
One kind or wherein several mixtures in device, non-container plastic utensil directly using or through cleaning, injection, blowing, calendering,
Extrusion, hot pressing, one or more methods in cutting are processed, and Jing mats formation or be superimposed prepared core material.
A kind of manufacture method of hot pressing sandwich structure wood plastic composite, is carried out according to the following steps：
S1, first flexible high molecular material is processed into certain thickness core material；
S2, the core material upper and lower surface prepared in step S1 are mated formation in the way of being layered and laminating wood plastic composite respectively
Layer, what the upper surface was mated formation is upper epidermis Wood-plastic material layer, and what the lower surface was mated formation is layer Wood-plastic material layer, is passed through
Mat formation and obtain sandwich structure slab；
S3, the sandwich structure slab for paving step S2 send into hot press, are processed acquisition with sandwich with hot pressing mode
The wood plastic composite of structure.
Further, described in step S2, the wood and plastic composite bed of material is prepared according to the following steps：
A, weigh raw material：20-150 part thermoplastic polymers, 30-200 part lignocellulose raw materials, 2-10 parts are weighed by mass fraction
Compatilizer, 1-10 part lubricants；
B, the raw material that step A is weighed is well mixed, is granulated with extruder, prilling temperature is 145-220 DEG C, obtains wood moulding
Composite pellet；
C, the wood plastic composite pellet for obtaining step B prepare wood moulding in one or more methods in hot pressing, injection, extrusion
Composite layer.
Further, hot-press method described in step S2, hot pressing temperature are 150-200 DEG C, and pressure is 0.5-15MPa, precompressed
Time is 0.5-20min, and hot pressing time is 0.5-15min；Described extrusion method, extrusion temperature are 140-200 DEG C, mouth mold temperature
Spend for 140-200 DEG C；Described injection moulding process, injecting machine material tube temperature are 160-240 DEG C, and nozzle temperature is 160-240 DEG C, note
Injection pressure is 30-60MPa.
Further, flexible high molecular material described in step S1 is thermoplastic polymer or thermoplastic polymer and phase
Hold agent mixture according to a certain percentage；The thermoplastic polymer is virgin material or reclaimed materials, and the thermoplastic polymer is poly-
One kind or wherein several mixtures in ethene, polypropylene, polyvinyl chloride and polystyrene；The compatilizer is maleic anhydride
One kind in the polyethylene of grafting, the polypropylene of maleic anhydride grafting, titanate esters, isocyanide ester, silane is wherein several mixed
Compound；Thermoplastic polymer in step S2 is virgin material or reclaimed materials, the thermoplastic polymer be polyethylene, poly- third
One kind or wherein several mixtures in alkene, polyvinyl chloride and polystyrene；Lignocellulose raw material in step S2 is
A kind of or wherein several mixture in wood powder, bamboo powder, agricultural residues powder, shell powder, bagasse；Described crops
Powder of straw is maize straw, wheat stalk, soybean stalk, cotton stalk or rice straw；Compatilizer in step S2 is Malaysia
The polyethylene of acid anhydrides grafting, the polypropylene of maleic anhydride grafting, titanate esters, isocyanide ester, the one kind or wherein several in silane
Mixture；Lubricant in step S2 is paraffin, Tissuemat E, polypropylene wax, stearic acid, Metallic stearates and second
A kind of or wherein several mixture in alkene acrylic acid copolymer slaine.
Further, the core material thickness described in step S1 is 0.3-10mm；Upper epidermis Wood-plastic material described in step S2 is thick
Spend for 0.5-50mm, the layer Wood-plastic material thickness is 0.5-50mm；The upper epidermis Wood-plastic material layer and the following table
Layer Wood-plastic material layer is prepared with various lignocellulose raw materials, and at least has a plate core layer and two surface layers, face
Outside, including plate core layer, plate core layer is wrapped up layer by surface layer clamping, and in the plate core layer, lignocellulose raw material is agricultural crop straw
Powder, in the surface layer, lignocellulose raw material is wood powder.
Description of the drawings
Fig. 1 is the structural representation of the sandwich structure wood-plastic composite panel of the present invention；
Fig. 2 is the manufacturing process flow diagram of the hot pressing sandwich structure wood plastic composite of the present invention.
In figure, each several part implication is as follows：1 upper epidermis Wood-plastic material；2 core materials；3 layer Wood-plastic materials.
Specific embodiment
The specific embodiment of the present invention is illustrated below in conjunction with the accompanying drawings.
Specific embodiment 1：Present embodiment, a kind of hot pressing sandwich structure wood described in present embodiment are illustrated with reference to Fig. 1
Plastic composite materials and its manufacture method, including the wood and plastic composite bed of material, the wood and plastic composite bed of material are at least divided into upper epidermis wood
The plastic bed of material 1 and layer Wood-plastic material layer 3, also have between the upper epidermis Wood-plastic material layer 1 and layer Wood-plastic material layer 3
Have core material 2, by way of heating melting pressing, the core material 2 and the upper epidermis Wood-plastic material layer 1 and
Layer Wood-plastic material layer 3 forms hot pressing sandwich structure, and the core material 2 is obtained for flexible high molecular material, and is constituted
The flexible intercalation of the hot pressing sandwich structure.
Present embodiment has the technical effect that：Glass is a kind of frangible material, but Sandwich bulletproof glass or glass for vehicle window
But there is higher impact resistance, is not easy to crush.This is because be provided between two thin glass layers one layer it is flexible
High molecular intercalation, and ensure well to cohere between the two, so when attack or crash occur, laminated glass is typically not
The catastrophic failure of comminuted, penetrability can occur；The present invention uses for reference the design of this laminarization of bulletproof glass " composite "
Principle, by using a kind of simple and effective sandwich structure, assigning Flexible high-molecular plastic as sandwich layer, prepares with sandwich structure
Wood-plastic composite panel, a kind of hot pressing sandwich structure wood plastic composite comprehensive mechanical property proposed by the present invention especially impacts
Toughness is obviously improved, and reduces the density of sheet material, application of the Wood plastic boards in the especially building template of template field is more fitted
Preferably, the invention provides a kind of method for improving wood-plastic composite performance；With the wood and plastic composite without hot pressing sandwich structure
Bending strength of the present invention of material comparing improves 10%-50%, and bending modulus improves 5%-50%, and impact strength improves 20-80%, makes
Obtain wood plastic composite mechanics and be modified while realizing activeness and quietness；Meanwhile, the present invention is to Wood-plastic material in future in household, agricultural
The development in the fields such as big-canopy framework has impetus.
Specific embodiment 2：Present embodiment, a kind of hot pressing sandwich structure wood described in present embodiment are illustrated with reference to Fig. 1
Plastic composite materials, described core material 2 be with the non-individual body of flexible macromolecule intercalation obtained in thermoplastic polymer, it is described
Thermoplastic polymer includes the mixture of one or more therein such as polyethylene, polypropylene, polyvinyl chloride and polystyrene, institute
The thermoplastic polymer stated is virgin material or reclaimed materials；Other are identical with specific embodiment 1.
Present embodiment has the technical effect that：Thermoplastic polymer is a kind of flexible macromolecule, with good toughness, is made
The advantages of good impact flexibility of sandwich structure wood plastic composite, low-density can be given for core material, and thermoplasticity
Polymer belongs to thermal plastic high polymer, and processing temperature is low, process is simple, can repeatedly recycling, with the material manufacture
While elastic continuum core material can ensure that wood plastic composite entirety impact flexibility, intensity and modulus are improved, i.e.,
Carry out strengthening modified using toughness material.And as the glass transition temperature of thermoplastic, polymeric materials is in subzero,
Thermoplastic polymer sandwich structure can give wood plastic composite relatively low glass transition so that even if material is in low temperature bar
Elastomeric state is under part, therefore there is preferable low-temperature impact toughness.When for reclaimed materials when, largely reduces cost will be
The recycling of waste or used plastics provides a good approach, the plastics de-referencing problem being on the rise in solving city, is conducive to
Society and economic sustainable development.
Specific embodiment 3：Described core material 2 be with thermoplastic polymer and compatilizer according to a certain percentage
Obtained in mixture, the thermoplastic polymer includes the one kind therein such as polyethylene, polypropylene, polyvinyl chloride and polystyrene
Or several mixtures, described thermoplastic polymer is virgin material or reclaimed materials；Described compatilizer is maleic anhydride grafting
One kind or wherein several mixtures in polyethylene, the polypropylene of maleic anhydride grafting, titanate esters, isocyanide ester, silane；Its
He is identical with specific embodiment 1.
Present embodiment has the technical effect that：Thermoplastic polymer is used as sandwich layer material by carrying out melting mixing with compatilizer
The bed of material, can be very good to improve the interface compatibility between polarity wood powder in non-polar thermoplastic polymer and upper and lower wood moulding layer,
The bond strength between core material and upper and lower Wood-plastic material layer is improved, so as to improve the whole of sandwich structure wood plastic composite
Mechanics performance.
Specific embodiment 4：Present embodiment, a kind of hot pressing sandwich structure wood described in present embodiment are illustrated with reference to Fig. 1
Plastic composite materials, described thermoplastic polymer are the thermoplastic, polymeric materials of film-form, sheet or tabular；Other with it is concrete
Any one of embodiment 1 to 3 is identical.
Present embodiment has the technical effect that：When thermoplastic polymer is film-form, sheet or tabular, can be by cutting out
Cut to mat formation and directly use as core material, especially when the thermoplastic polymer for reclaiming is above-mentioned shape, after cleaning
Can also directly use, largely simplified processing process, and the performance of thermoplastic polymer itself can be kept well；And
When can making hot pressing for film-form, sheet or tabular due to thermoplastic polymer, each position is uniformly heated, and is conducive to material
Processing and the performance of product there is homogeneity, it can also be ensured that thermoplastic polymer in horizontal molecularly oriented, and then more resistant to
Impact also is adapted for the environment of inclement condition and uses.
Specific embodiment 5：Present embodiment, a kind of hot pressing sandwich structure wood described in present embodiment are illustrated with reference to Fig. 1
Plastic composite materials, the thermoplastic polymer reclaimed materials is to reclaim agricultural film, preservative film, packaging film, polybag, plastic containers, non-
One kind or wherein several mixtures in container plastic utensil directly using or through cleaning, injection, blowing, calendering, extrusion,
One or more methods in hot pressing, cutting are processed, and Jing mats formation or is superimposed and core material is obtained；Other and specific embodiment
Any one of 1 to 4 is identical.
Present embodiment has the technical effect that：The waste or used plastics that China produces every year occupy sizable ratio, and due to
Reclaimed materials impurity and colouring agent are varied, are used in mixed way and unsightly, how to recycle and make recycled plastic to obtain superior
Social benefit and be a difficult problem compared with high added value；Present embodiment uses recovery thermoplastic polymer as core material
Layer, can effectively utilize waste or used plastics, can provide good solution route for the white pollution being on the rise, either environment
Protection or scientific development are of great importance, and by present embodiment, can make outward appearance unsightly or colour contamination has
The reclaimed materials of visual defect is directly used in the manufacture core material, and the core material color and luster in the present invention is not limited, can
Reducing sorting operation reduces recovery difficult.Through working process again after recovery, can be by different shape, the recycled plastic of performance
Unification is processed as the homogeneous raw material of form, Performance comparision.
Specific embodiment 6：Present embodiment, a kind of hot pressing sandwich structure wood described in present embodiment are illustrated with reference to Fig. 1
The manufacture method of plastic composite materials, is carried out according to the following steps：S1, first flexible high molecular material is processed into certain thickness
Core material 2；S2,2 upper and lower surface of core material prepared in step S1 are mated formation in the way of being layered and laminating wood moulding respectively
Composite layer, what the upper surface was mated formation are upper epidermis Wood-plastic material layers 1, and what the lower surface was mated formation is layer wood moulding material
The bed of material 3, obtains sandwich structure slab by mating formation；S3, the sandwich structure slab for paving step S2 send into hot press, with heat
Pressure mode is processed and obtains the wood plastic composite with sandwich structure；Other phases any one of with specific embodiment 1 to 5
Together.
Present embodiment has the technical effect that：Using a kind of simple and effective sandwich structure, Flexible high-molecular plastic is worked as
Sandwich layer is done, the wood-plastic composite panel with sandwich structure, a kind of hot pressing sandwich structure wood and plastic composite proposed by the present invention is prepared
Material comprehensive mechanical property, especially impact flexibility is obviously improved, and reduces the density of sheet material, make Wood plastic boards in template field especially
Application in building template is more suitable, the invention provides a kind of method for improving wood-plastic composite performance；It is hot with not containing
Bending strength of the present invention of the wood plastic composite of pressure sandwich structure comparing improves 10%-50%, and bending modulus improves 5%-50%,
Impact strength improves 20-80% so that wood plastic composite mechanics realizes activeness and quietness simultaneously and is modified.
Specific embodiment 7：Present embodiment, a kind of hot pressing sandwich structure wood described in present embodiment are illustrated with reference to Fig. 1
The manufacture method of plastic composite materials, described in described step S2, the wood and plastic composite bed of material is prepared according to the following steps：A, weigh raw material：
20-150 part thermoplastic polymers, 30-200 part lignocellulose raw materials, 2-10 part compatilizers, 1-10 parts profit are weighed by mass fraction
Lubrication prescription；B, the raw material that step A is weighed is well mixed, is granulated with extruder, prilling temperature is 145-220 DEG C, obtains wood
Plastic composite materials pellet；C, the wood plastic composite pellet for obtaining step B are with one or more in hot pressing, injection, extrusion
Method prepares the wood and plastic composite bed of material；Other are identical with specific embodiment 6.
Present embodiment has the technical effect that：Wood-plastic material prepared by the present invention, can be using thermoplastic polymer be reclaimed, very
Big degree reduces cost, and the source of string is widely, leftover pieces, sawdust when timber can be adopted to process or which is useless
Powder obtained in old system product, this kind of approach not only contribute to protect forest resources, the modeling being on the rise in can also solving city
Material de-referencing problem, is conducive to society and economic sustainable development；The effect for limiting this Ju Ti Pei Fang is to ensure upper layer
In Wood-plastic material, in different contents, material can according to demand in different occasions, i.e., intensity and the different of modulus limit not for wood powder
Same wood powder content；The effect for limiting this temperature is less than this temperature range, and wood moulding can not reach good plasticizing effect, surpasses
This scope is crossed, wood fibre charing, thermoplastic polymer start degraded, it is impossible to ensure that material has good impact flexibility, and
Can reduce and sandwich layer compound interface bond strength.
Specific embodiment 8：Present embodiment, a kind of hot pressing sandwich structure wood described in present embodiment are illustrated with reference to Fig. 1
The manufacture method of plastic composite materials, hot-press method described in step S2, hot pressing temperature are 150-200 DEG C, and pressure is 0.5-
15MPa, squeeze time are 0.5-20min, and hot pressing time is 0.5-15min；Described extrusion method, extrusion temperature are 140-
200 DEG C, die temperature is 140-200 DEG C；Described injection moulding process, injecting machine material tube temperature are 160-240 DEG C, and nozzle temperature is
160-240 DEG C, injection pressure is 30-60MPa；Other are identical with specific embodiment 7.
Present embodiment has the technical effect that：Pressure sintering is to prepare one of method of wood-plastic composite panel, by by raw material
Carry out mating formation hot-forming, it is ensured that the form of string, improve raw material availability, process the larger plate of book size
Material.Extrusion and injection molding processes can realize continuous production, can improve the production efficiency of Wood-plastic material；Carry out the tool of the numerical value
What body restriction was brought has the technical effect that sandwich layer is good with upper layer interface cohesion, prevents the charing of wood-fibred in wood moulding layer,
Ensure the homogeneity and good impact flexibility of material.
Specific embodiment 9：Present embodiment, a kind of hot pressing sandwich structure wood described in present embodiment are illustrated with reference to Fig. 1
The manufacture method of plastic composite materials, flexible high molecular material described in step S1 are that thermoplastic polymer or thermoplasticity are polymerized
Thing and compatilizer mixture according to a certain percentage；The thermoplastic polymer is virgin material or reclaimed materials, the thermoplasticity polymerization
Thing is one kind or wherein several mixtures in polyethylene, polypropylene, polyvinyl chloride and polystyrene；The compatilizer is horse
One kind or wherein several in maleic anhydride grafted polyethylene, the polypropylene of maleic anhydride grafting, titanate esters, isocyanide ester, silane
The mixture planted；
Thermoplastic polymer in step S2 is virgin material or reclaimed materials, the thermoplastic polymer be polyethylene, polypropylene,
One kind or wherein several mixtures in polyvinyl chloride and polystyrene；Lignocellulose raw material in step S2 is wood
A kind of or wherein several mixture in powder, bamboo powder, agricultural residues powder, shell powder, bagasse；Described crops straw
Stalk powder is maize straw, wheat stalk, soybean stalk, cotton stalk or rice straw；Compatilizer in step S2 is maleic acid
The polyethylene of acid anhydride grafting, the polypropylene of maleic anhydride grafting, titanate esters, isocyanide ester, the one kind or wherein several in silane
Mixture；Lubricant in step S2 is paraffin, Tissuemat E, polypropylene wax, stearic acid, Metallic stearates and ethene
A kind of or wherein several mixture in acrylic acid copolymer slaine；Other are identical with specific embodiment 6.
Present embodiment has the technical effect that：Wood-plastic material prepared by the present invention, can be using thermoplastic polymer be reclaimed, very
Big degree reduces cost, and the source of string is widely, leftover pieces, sawdust when timber can be adopted to process or which is useless
Powder obtained in old system product, this kind of approach not only contribute to protect forest resources, the modeling being on the rise in can also solving city
Material de-referencing problem, is conducive to society and economic sustainable development.And the addition of additive such as compatilizer, lubricant, Ke Yiyou
The overall performance for improving Wood-plastic material of effect.
Specific embodiment 10：2 thickness of core material described in step S1 is 0.3-10mm；Upper epidermis wood described in step S2
1 thickness of moulding material is 0.5-50mm, and 3 thickness of layer Wood-plastic material is 0.5-50mm；The upper epidermis Wood-plastic material layer 1
Prepared with various lignocellulose raw materials with the layer Wood-plastic material layer 3, and at least with plate core layer and
Two surface layers, outside, including plate core layer, plate core layer is wrapped up surface layer by surface layer clamping, and in the plate core layer, lignocellulose raw material is
Agricultural residues powder, in the surface layer, lignocellulose raw material is wood powder.
Present embodiment has the technical effect that：Wood-plastic material layer, not only can by being obtained with various lignocellulose raw materials
Different wooden resources are effectively utilized, can also be avoided agricultural residues powder as asking that heating during top layer is carbonized
Topic, darkens, and affects attractive in appearance, and can then avoid the problem that darkens using wood powder as the surface layer of Wood-plastic material layer, and
Two kinds of lignocellulose raw material performances can be carried out cooperateing with and add and improve the comprehensive of whole Wood-plastic material layer by plate core layer and two surface layers
Close performance.
Beneficial effects of the present invention are verified using following examples：
Embodiment one：
A kind of preparation method of the hot pressing sandwich structure wood plastic composite described in the present embodiment, specifically enters according to following steps
Capable：
First, weigh raw material：By mass fraction weigh 40 parts of thermoplastic polymers, 55 parts of string powders, 2.75 parts of compatilizers,
With 2 parts of lubricants；
2nd, the raw material that step one is weighed is well mixed, mixture is granulated by double screw extruder, prilling temperature one
145 DEG C, 150 DEG C, 155 DEG C, 160 DEG C, 165 DEG C, 160 DEG C and 155 DEG C are followed successively by 7th area, screw speed is 30r/min, is obtained
Wood moulding pellet；
3rd, 40g wood moulding pellets are weighed, wood moulding pellet is uniformly mated formation in 160 × 160mm2In mould, thickness is hot pressed into for 2mm
Wood plastic boards, as the upper layer of composite board, 185 DEG C of hot pressing temperature, squeeze time 10min, hot pressing time 3min；
4th, 20g thermoplastic polymers are weighed, using the mould of breadth identical with step 3, the plastic plate of thickness 1mm is hot pressed into
Material, as the sandwich layer of composite board, 165 DEG C of hot pressing temperature, squeeze time 1.5min, hot pressing time 1min；
5th, step three and four is obtained into sheet material, is mated formation 160 according to the order of wood moulding upper epidermis, plastic core layer, wood moulding layer
×160mm2In mould, thickness is hot pressed into for 4mm wood-plastic composite panels, 185 DEG C of hot pressing temperature, squeeze time 12min, during hot pressing
Between 3min；
Thermoplastic polymer described in step one is high density polyethylene (HDPE) (HDPE)：Trade mark 5000S, Daqing petrochemical；
String powder described in step one be Poplar Powder, 40-80 mesh, moisture content≤3%；
Compatilizer consumption described in step one in mass ratio for wood powder 5%, be maleic anhydride grafting polyethylene, percent grafting
For 1%, melt index >=50g/10min, Rizhisheng New Technology Development Co., Ltd., Shanghai；
Lubricant described in step one is paraffin and Tissuemat E, commercially available；
Thermoplastic polymer described in step 4 is LLDPE (LLDPE)：The trade mark 7042, Daqing petrochemical；
Hot-forming 160 × 160mm described in step 32Mould, Outside Dimensions are 190 × 190mm2Back Word frame mould,
The thickness of mould is 2mm；
Hot-forming 160 × 160mm described in step 42Mould, Outside Dimensions are 190 × 190mm2Back Word frame mould,
The thickness of mould is 1mm；
Hot-forming 160 × 160mm described in step 52Mould, Outside Dimensions are 190 × 190mm2Back Word frame mould,
The thickness of mould is 4mm.
Embodiment two：Present embodiment from unlike embodiment one：35 parts of thermoplastics are weighed by mass fraction in step one
Property polymer, 60 parts of string powders, 3 parts of compatilizers and 2 parts of lubricants.Other are identical with embodiment one.
Embodiment three：Present embodiment from unlike embodiment one：30 parts of thermoplastics are weighed by mass fraction in step one
Property polymer, 65 parts of string powders, 3.25 parts of compatilizers and 2 parts of lubricants.Other are identical with embodiment one.
Example IV：Present embodiment from unlike embodiment one：25 parts of thermoplastics are weighed by mass fraction in step one
Property polymer, 70 parts of string powders, 3.5 parts of compatilizers and 2 parts of lubricants.Other are identical with embodiment one.
Embodiment five：Present embodiment from unlike embodiment one：20 parts of thermoplastics are weighed by mass fraction in step one
Property polymer, 75 parts of string powders, 3.75 parts of compatilizers and 2 parts of lubricants.Other are identical with embodiment one.
Embodiment six：Present embodiment from unlike embodiment one：15 parts of thermoplastics are weighed by mass fraction in step one
Property polymer, 80 parts of string powders, 4 parts of compatilizers and 2 parts of lubricants.Other are identical with embodiment one.
Embodiment seven：Present embodiment from unlike embodiment one：10 parts of thermoplastics are weighed by mass fraction in step one
Property polymer, 85 parts of string powders, 4.25 parts of compatilizers and 2 parts of lubricants.Other are identical with embodiment one.
Embodiment eight：Present embodiment from specifically follow the steps below unlike embodiment one：
First, weigh raw material：By mass fraction weigh 100 parts of thermoplastic polymers, 35 parts of string powders, 15 parts of calcium carbonate,
0.75 part of compatilizer, 0.4 part of stabilizer and 0.2 part of lubricant；
2nd, the raw material that step one is weighed is well mixed, mixture is granulated by double screw extruder, prilling temperature one
155 DEG C, 155 DEG C, 160 DEG C, 165 DEG C, 170 DEG C, 165 DEG C and 160 DEG C are followed successively by 7th area, screw speed is 30r/min, is obtained
Wood moulding pellet；
3rd, 40g wood moulding pellets are weighed, wood moulding pellet is uniformly mated formation in 160 × 160mm2In mould, thickness is hot pressed into for 2mm
Wood plastic boards, as the upper layer of composite board, 185 DEG C of hot pressing temperature, squeeze time 10min, hot pressing time 3min；
4th, 19g thermoplastic polymers are weighed and 1g stabilizers is well mixed, using the mould of breadth identical with step 3, hot pressing
Into the plastic plate of thickness 1mm, as the sandwich layer of composite board, 170 DEG C of hot pressing temperature, squeeze time 1.5min, hot pressing time
1min；
5th, step three and four is obtained into sheet material, is mated formation 160 according to the order of wood moulding upper epidermis, plastic core layer, wood moulding layer
×160mm2In mould, thickness is hot pressed into for 4mm wood-plastic composite panels, 185 DEG C of hot pressing temperature, squeeze time 12min, during hot pressing
Between 3min；
Thermoplastic polymer described in step one and four is polyvinyl chloride (PVC)：Trade mark S700, Qilu Petrochemical；
Compatilizer described in step one be Aluminate, Rizhisheng New Technology Development Co., Ltd., Shanghai；
Calcium carbonate particle diameter described in step one is more than 10 μm, the earth Gai Ye Co., Ltds of Siping City；
Stabilizer described in step one and four is calcium zinc stabilizer：It is commercially available；Other are identical with embodiment one.
Contrast test one：The contrast test of embodiment one, specifically follows the steps below：
First, weigh：40 parts of thermoplastic polymers, 55 parts of string powders, 2.75 parts of compatilizers and 2 are weighed by mass fraction
Part lubricant；
2nd, the material that step one is weighed is well mixed, mixture is granulated by double screw extruder, prilling temperature one
145 DEG C, 150 DEG C, 155 DEG C, 160 DEG C, 165 DEG C, 160 DEG C and 155 DEG C are followed successively by 7th area, screw speed is 30r/min, is obtained
Wood moulding pellet；
3rd, 100g wood moulding pellets are weighed, wood moulding pellet is uniformly mated formation in 160 × 160mm2In mould, thickness is hot pressed into for 4mm
Wood plastic boards, as the blank group of composite board, 185 DEG C of hot pressing temperature, squeeze time 16min, hot pressing time 4min；
Thermoplastic polymer described in step one is high density polyethylene (HDPE)：Trade mark 5000S, Daqing petrochemical；
String powder described in step one be Poplar Powder, 40-80 mesh, moisture content≤3%；
Compatilizer consumption described in step one in mass ratio for wood powder 5%, be maleic anhydride grafting polyethylene, percent grafting
For 1%, melt index >=50g/10min, Rizhisheng New Technology Development Co., Ltd., Shanghai；
Lubricant described in step one is paraffin and Tissuemat E, commercially available；
Hot-forming 160 × 160mm described in step 32Mould, Outside Dimensions are 190 × 190mm2Back Word frame mould,
The thickness of mould is 4mm.
Contrast test two：The contrast test of embodiment two, this contrast test from unlike contrast test one：In step
35 parts of thermoplastic polymers, 60 parts of string powders, 3 parts of compatilizers and 2 parts of lubricants are weighed by mass fraction.Other with it is right
It is more identical than test one.
Contrast test three：The contrast test of embodiment three, this contrast test from unlike contrast test one：In step
30 parts of thermoplastic polymers, 65 parts of string powders, 3.25 parts of compatilizers and 2 parts of lubricants are weighed by mass fraction.Other
It is identical with contrast test one.
Contrast test four：The contrast test of example IV, this contrast test from unlike contrast test one：In step
25 parts of thermoplastic polymers, 70 parts of string powders, 3.5 parts of compatilizers and 2 parts of lubricants are weighed by mass fraction.Other with
Contrast test one is identical.
Contrast test five：The contrast test of embodiment five, this contrast test from unlike contrast test one：In step
20 parts of thermoplastic polymers, 75 parts of string powders, 3.75 parts of compatilizers and 2 parts of lubricants are weighed by mass fraction.Other
It is identical with contrast test one.
Contrast test six：The contrast test of embodiment six, this contrast test from unlike contrast test one：In step
15 parts of thermoplastic polymers, 80 parts of string powders, 4 parts of compatilizers and 2 parts of lubricants are weighed by mass fraction.Other with it is right
It is more identical than test one.
Contrast test seven：The contrast test of embodiment seven, this contrast test from unlike contrast test one：In step
10 parts of thermoplastic polymers, 85 parts of string powders, 4.25 parts of compatilizers and 2 parts of lubricants are weighed by mass fraction.Other
It is identical with contrast test one.
Contrast test eight：The contrast test of embodiment eight, this contrast test from specifically press unlike contrast test one
Carry out according to following steps：
First, weigh raw material：By mass fraction weigh 100 parts of thermoplastic polymers, 35 parts of string powders, 15 parts of calcium carbonate,
0.75 part of compatilizer, 0.4 part of stabilizer and 0.2 part of lubricant；
2nd, the raw material that step one is weighed is well mixed, mixture is granulated by double screw extruder, prilling temperature one
155 DEG C, 155 DEG C, 160 DEG C, 165 DEG C, 170 DEG C, 165 DEG C and 160 DEG C are followed successively by 7th area, screw speed is 30r/min, is obtained
Wood moulding pellet；
3rd, 40g wood moulding pellets are weighed, wood moulding pellet is uniformly mated formation in 160 × 160mm2In mould, thickness is hot pressed into for 4mm
Wood plastic boards, as the blank group of composite board, 185 DEG C of hot pressing temperature, squeeze time 10min, hot pressing time 3min；
Thermoplastic polymer described in step one is polyvinyl chloride (PVC)：Trade mark S700, Qilu Petrochemical；
Compatilizer described in step one be Aluminate, Rizhisheng New Technology Development Co., Ltd., Shanghai；
Calcium carbonate particle diameter described in step one is more than 10 μm, the earth Gai Ye Co., Ltds of Siping City；
Stabilizer described in step one is calcium zinc stabilizer：It is commercially available；Other are identical with contrast test one.
Wood prepared by the hot pressing sandwich structure wood plastic composite prepared to embodiment one to seven and contrast test one to seven
Moulding material carries out static mechanical property test, bending and impact strength test, as a result as shown in table 1：
1 hot pressing sandwich structure wood plastic composite mechanical experimental results of table
Embodiment one to seven granulates hot pressing under identical experiment condition with contrast test one to seven, by contrast test
As can be seen that wood moulding blank group sheet material (contrast test one to seven) is with the increase of wood powder content, bending strength first rise after under
Drop, impact strength decline always；After sandwich layer is combined the thick plastic layers of 1mm respectively, the bending strength of embodiment one to seven with
Wood powder content increases in downward trend after first rising, be respectively increased 7.28% relative to blank group, 6.89%, 1.86%,
16.98%th, 42.34%, 29.32%, 37.69%, bending modulus has been respectively increased 2.60% relative to blank group, 3.57%,
7.39%th, 10.80%, 45.69%, 25.05%, 33.22%, impact strength has been respectively increased 44.64% relative to blank group,
15.35%th, 26.69%, 45.36%, 73.31%, 77.06%, 51.33%, change resin into polyvinyl chloride, strength modulus and
Toughness is still in increase trend.As known from the above, sandwich structure can improve the intensity and toughness of thermoplastic polymer sheet material, i.e.,
The effect of activeness and quietness is realized in Wood-plastic material is increased on the basis of plastic content simultaneously can, and with string powder
The increase of content, its activeness and quietness effect are more obvious.As this kind of method is on the basis of plastic content is improved, can still fill
That what is divided embodies string mechanical property, and sandwich layer can also be using products such as recycled plastic films, to wood moulding mechanical property
Can have important meaning to environment and economy while improvement.
Claims (10)
1. a kind of hot pressing sandwich structure wood plastic composite, including the wood and plastic composite bed of material, it is characterised in that the wood plastics composite
Material layer is at least divided into upper epidermis Wood-plastic material layer (1) and layer Wood-plastic material layer (3), the upper epidermis Wood-plastic material layer
(1) also with core material (2), core described in by way of heating melting pressing and layer Wood-plastic material layer (3) between
Layer of material (2) forms hot pressing sandwich structure, institute with the upper epidermis Wood-plastic material layer (1) and layer Wood-plastic material layer (3)
Core material (2) non-individual body obtained in flexible high molecular material is stated, and constitutes the flexible intercalation of the hot pressing sandwich structure.
2. a kind of hot pressing sandwich structure wood plastic composite according to claim 1, it is characterised in that described sandwich layer material
The bed of material (2) is so that, obtained in thermoplastic polymer, the thermoplastic polymer includes polyethylene, polypropylene, polyvinyl chloride and gathers
The mixture of one or more therein such as styrene, described thermoplastic polymer are virgin material or reclaimed materials.
3. a kind of hot pressing sandwich structure wood plastic composite according to claim 2, it is characterised in that described sandwich layer material
The bed of material (2) is the thermoplastic polymer bag with obtained in thermoplastic polymer and compatilizer mixture according to a certain percentage
Include the mixture of one or more therein such as polyethylene, polypropylene, polyvinyl chloride and polystyrene, described thermoplasticity polymerization
Thing is reclaimed materials；Described compatilizer is the polyethylene of the maleic anhydride grafting, polypropylene of maleic anhydride grafting, titanate esters, different
One kind or wherein several mixtures in nitrile acid esters, silane.
4. a kind of hot pressing sandwich structure wood plastic composite according to claim 3, it is characterised in that the thermoplasticity polymerization
Thermoplastic, polymeric materials of the thing for film-form, sheet or tabular.
5. a kind of hot pressing sandwich structure wood plastic composite according to claim 4, it is characterised in that the thermoplasticity polymerization
Thing reclaimed materials is to reclaim agricultural film, preservative film, packaging film, polybag, plastic containers, one kind in non-container plastic utensil or wherein
Several mixtures is directly used or cleaned, injection, blowing, calendering, extrusion, hot pressing, one or more methods in cutting
Processing, Jing are mated formation or are superimposed and core material (2) is obtained.
6. the manufacture method of a kind of hot pressing sandwich structure wood plastic composite according to claim 1, it is characterised in that press
Following steps are carried out：
S1, first flexible high molecular material is processed into certain thickness core material (2)；
S2, core material (2) upper and lower surface prepared in step S1 are mated formation in the way of being layered and laminating wood and plastic composite respectively
The bed of material, what the upper surface was mated formation are upper epidermis Wood-plastic material layer (1), and what the lower surface was mated formation is layer Wood-plastic material layer
(3), sandwich structure slab is obtained by mating formation；
S3, the sandwich structure slab for paving step S2 send into hot press, are processed acquisition with sandwich with hot pressing mode
The wood plastic composite of structure.
7. a kind of manufacture method of hot pressing sandwich structure wood plastic composite according to claim 6, it is characterised in that step
The wood and plastic composite bed of material described in rapid S2 is prepared according to the following steps：
A, weigh raw material：20-150 part thermoplastic polymers, 30-200 part lignocellulose raw materials, 2-10 parts are weighed by mass fraction
Compatilizer, 1-10 part lubricants；
B, the raw material that step A is weighed is well mixed, is granulated with extruder, prilling temperature is 145-220 DEG C, obtains wood moulding
Composite pellet；
C, the wood plastic composite pellet for obtaining step B prepare wood moulding in one or more methods in hot pressing, injection, extrusion
Composite layer.
8. a kind of manufacture method of hot pressing sandwich structure wood plastic composite according to claim 7, it is characterised in that step
Hot-press method described in rapid S2, hot pressing temperature is 150-200 DEG C, and pressure is 0.5-15MPa, and squeeze time is 0.5-20min, heat
The pressure time is 0.5-15min；Described extrusion method, extrusion temperature are 140-200 DEG C, and die temperature is 140-200 DEG C；It is described
Injection moulding process, injecting machine material tube temperature be 160-240 DEG C, nozzle temperature be 160-240 DEG C, injection pressure is 30-60MPa.
9. a kind of hot pressing sandwich structure wood plastic composite manufacture method according to claim 7, it is characterised in that：
Flexible high molecular material described in step S1 is thermoplastic polymer or thermoplastic polymer with compatilizer according to one
The mixture of certainty ratio；The thermoplastic polymer is virgin material or reclaimed materials, the thermoplastic polymer be polyethylene, poly- third
One kind or wherein several mixtures in alkene, polyvinyl chloride and polystyrene；The compatilizer is the poly- of maleic anhydride grafting
One kind or wherein several mixtures in ethene, the polypropylene of maleic anhydride grafting, titanate esters, isocyanide ester, silane；It is described
Thermoplastic polymer in step S2 is virgin material or reclaimed materials, and the thermoplastic polymer is polyethylene, polypropylene, polyvinyl chloride
With the one kind in polystyrene or wherein several mixtures；Lignocellulose raw material in step S2 is wood powder, bamboo powder, agriculture
A kind of or wherein several mixture in crop material powder, shell powder, bagasse；Described agricultural residues powder is corn
Stalk, wheat stalk, soybean stalk, cotton stalk or rice straw；Compatilizer in step S2 is the poly- of maleic anhydride grafting
One kind or wherein several mixtures in ethene, the polypropylene of maleic anhydride grafting, titanate esters, isocyanide ester, silane；It is described
Lubricant in step S2 is paraffin, Tissuemat E, polypropylene wax, stearic acid, Metallic stearates and ethylene-acrylic acid copolymer
A kind of or wherein several mixture in slaine.
10. the manufacture method of a kind of hot pressing sandwich structure wood plastic composite according to any one of claim 6 to 9,
It is characterized in that core material (2) thickness described in step S1 is 0.3-10mm；Upper epidermis Wood-plastic material (1) described in step S2 is thick
Spend for 0.5-50mm, layer Wood-plastic material (3) thickness is 0.5-50mm；The upper epidermis Wood-plastic material layer (1) and institute
State layer Wood-plastic material layer (3) to prepare with various lignocellulose raw materials, and at least there is a plate core layer and two
Individual surface layer, outside, including plate core layer, plate core layer is wrapped up surface layer by surface layer clamping, and in the plate core layer, lignocellulose raw material is agriculture
Crop material powder, in the surface layer, lignocellulose raw material is wood powder.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109878100A (en) * | 2019-03-12 | 2019-06-14 | 北京化工大学 | A kind of outer lamination of mould prepares the device and method of wood plastic composite |
| US20210235907A1 (en) * | 2018-04-17 | 2021-08-05 | Renata BAION | Dispensing and mixing device |
| CN113619215A (en) * | 2021-08-27 | 2021-11-09 | 东北林业大学 | Sandwich-structure flame-retardant wood-plastic composite material and preparation method thereof |
| CN116176086A (en) * | 2023-04-24 | 2023-05-30 | 济南市阿波罗木塑复合材料有限公司 | Wood-plastic micro-foaming composite material for cold chain container board and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102431263A (en) * | 2011-09-16 | 2012-05-02 | 东北林业大学 | Light high-strength sandwich structure wood-plastic composite board and one-step forming manufacturing method thereof |
| CN103770430A (en) * | 2014-01-10 | 2014-05-07 | 中国林业科学研究院木材工业研究所 | Flexible compound decorative veneer facing process |
| CN105150644A (en) * | 2015-07-17 | 2015-12-16 | 安徽国风木塑科技有限公司 | Co-extruded wood-plastic composite material |
| CN105295222A (en) * | 2015-10-16 | 2016-02-03 | 陈光南 | Novel cladding co-extrusion wood-plastic composite material and manufacturing method thereof |
| US9475941B1 (en) * | 2015-11-05 | 2016-10-25 | Madeplast Indústria E Comérico De Madeira Plástica Ltda | Formulation of wood waste and recycled thermoplastic composite with nanometric additives and resulting product |
-
2016
- 2016-10-27 CN CN201610948241.8A patent/CN106515150A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102431263A (en) * | 2011-09-16 | 2012-05-02 | 东北林业大学 | Light high-strength sandwich structure wood-plastic composite board and one-step forming manufacturing method thereof |
| CN103770430A (en) * | 2014-01-10 | 2014-05-07 | 中国林业科学研究院木材工业研究所 | Flexible compound decorative veneer facing process |
| CN105150644A (en) * | 2015-07-17 | 2015-12-16 | 安徽国风木塑科技有限公司 | Co-extruded wood-plastic composite material |
| CN105295222A (en) * | 2015-10-16 | 2016-02-03 | 陈光南 | Novel cladding co-extrusion wood-plastic composite material and manufacturing method thereof |
| US9475941B1 (en) * | 2015-11-05 | 2016-10-25 | Madeplast Indústria E Comérico De Madeira Plástica Ltda | Formulation of wood waste and recycled thermoplastic composite with nanometric additives and resulting product |
Non-Patent Citations (2)
| Title |
|---|
| 汪多仁: "《绿色降解化学品》", 30 January 2008 * |
| 雷得定: "《木材界面学与界面技术》", 30 September 2012 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210235907A1 (en) * | 2018-04-17 | 2021-08-05 | Renata BAION | Dispensing and mixing device |
| CN109878100A (en) * | 2019-03-12 | 2019-06-14 | 北京化工大学 | A kind of outer lamination of mould prepares the device and method of wood plastic composite |
| CN109878100B (en) * | 2019-03-12 | 2020-11-20 | 北京化工大学 | Device and method for preparing wood-plastic composite material by laminating outside mold |
| CN113619215A (en) * | 2021-08-27 | 2021-11-09 | 东北林业大学 | Sandwich-structure flame-retardant wood-plastic composite material and preparation method thereof |
| CN113619215B (en) * | 2021-08-27 | 2022-05-03 | 东北林业大学 | Sandwich-structure flame-retardant wood-plastic composite material and preparation method thereof |
| CN116176086A (en) * | 2023-04-24 | 2023-05-30 | 济南市阿波罗木塑复合材料有限公司 | Wood-plastic micro-foaming composite material for cold chain container board and preparation method thereof |
| CN116176086B (en) * | 2023-04-24 | 2023-08-08 | 济南市阿波罗木塑复合材料有限公司 | Wood-plastic micro-foaming composite material for cold chain container board and preparation method thereof |
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Application publication date: 20170322 |