CN112795175A - Manufacturing process of composite floor - Google Patents
Manufacturing process of composite floor Download PDFInfo
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- CN112795175A CN112795175A CN202110006734.0A CN202110006734A CN112795175A CN 112795175 A CN112795175 A CN 112795175A CN 202110006734 A CN202110006734 A CN 202110006734A CN 112795175 A CN112795175 A CN 112795175A
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- 239000002131 composite material Substances 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 26
- 239000011241 protective layer Substances 0.000 claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 17
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 28
- 238000004383 yellowing Methods 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 22
- 239000012530 fluid Substances 0.000 claims description 19
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 18
- 229920000570 polyether Polymers 0.000 claims description 18
- -1 polytetrafluoroethylene Polymers 0.000 claims description 17
- WTPYFJNYAMXZJG-UHFFFAOYSA-N 2-[4-(2-hydroxyethoxy)phenoxy]ethanol Chemical compound OCCOC1=CC=C(OCCO)C=C1 WTPYFJNYAMXZJG-UHFFFAOYSA-N 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 16
- 239000002023 wood Substances 0.000 claims description 16
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 14
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 14
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 13
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- 239000002518 antifoaming agent Substances 0.000 claims description 12
- 239000006096 absorbing agent Substances 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 9
- 229920005862 polyol Polymers 0.000 claims description 8
- 150000003077 polyols Chemical class 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 7
- 239000003365 glass fiber Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 7
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 5
- 235000013539 calcium stearate Nutrition 0.000 claims description 5
- 239000008116 calcium stearate Substances 0.000 claims description 5
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims description 5
- 229960001545 hydrotalcite Drugs 0.000 claims description 5
- 229910001701 hydrotalcite Inorganic materials 0.000 claims description 5
- HJIAMFHSAAEUKR-UHFFFAOYSA-N (2-hydroxyphenyl)-phenylmethanone Chemical compound OC1=CC=CC=C1C(=O)C1=CC=CC=C1 HJIAMFHSAAEUKR-UHFFFAOYSA-N 0.000 claims description 4
- 239000003963 antioxidant agent Substances 0.000 claims description 4
- 230000003078 antioxidant effect Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000003086 colorant Substances 0.000 claims description 3
- 239000006082 mold release agent Substances 0.000 claims description 3
- 239000005543 nano-size silicon particle Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 claims description 2
- 239000002250 absorbent Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 239000006260 foam Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 15
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 12
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 12
- 239000002667 nucleating agent Substances 0.000 description 9
- 229920000728 polyester Polymers 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 238000002834 transmittance Methods 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229940124543 ultraviolet light absorber Drugs 0.000 description 3
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 3
- 239000005711 Benzoic acid Substances 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 235000010233 benzoic acid Nutrition 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 2
- 235000010234 sodium benzoate Nutrition 0.000 description 2
- 239000004299 sodium benzoate Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
- E04F15/105—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials of organic plastics with or without reinforcements or filling materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use 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; Derivatives of such polymers
- C08J2327/02—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Manufacturing & Machinery (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a manufacturing process of a composite floor, and belongs to the technical field of composite floors. The PU hard foam substrate and the TPU transparent protective layer are arranged, and the substrate and the transparent protective layer are attached by using the self-carried viscosity of the material in a hot injection mode; meanwhile, the contact area is increased by means of unevenness of 3D bark grains arranged on the base material, the problem of complex process in the problems is solved, and meanwhile, the contact is more stable. Meanwhile, the problem of poor pattern authenticity in the problems is solved by using a hot injection mode.
Description
Technical Field
The invention relates to the technical field of composite floors, in particular to a manufacturing process of a composite floor.
Background
A composite floor is one of the floors. However, the composite floor is artificially changed in the natural structure of the floor material, and the floor with certain physical properties meeting the expected requirements is achieved. Composite floors are often referred to in the market as laminate wood flooring and solid wood composite floors.
For example, chinese patent application publication No. CN108797948A discloses a manufacturing process of a composite floor. The method comprises the following steps of processing a panel: processing a surface plate, processing a core plate and processing a bottom plate; gluing and compounding: firstly, gluing a core plate by using a gluing machine, then carrying out assembly and prepressing treatment, carrying out hot pressing by using a hot press, and finally carrying out tempering treatment of a balance warehouse, wherein the compounding temperature is 150-; finish machining: firstly, longitudinally slitting the composite board, sanding the composite board by using a sanding machine, and finally performing mortise slotting by using a longitudinal double-end tenoning machine and mortise slotting by using a transverse double-end tenoning machine; decorating layer: after the paper printed with patterns is soaked in the melamine solution on the surface board of the three-layer solid wood composite floor, the paper becomes an attractive and durable decorative layer by utilizing the characteristic that melamine is stable in chemical property after being heated and reacted and does not generate chemical reaction any more; bottom layer: a protective layer made of polyester material is added on the bottom plate of the three-layer solid wood composite floor. However, the present solution has the following problems: firstly, the manufacturing process is relatively complicated; secondly, the gluing and pressing composite mode is adopted, so that the composite board is not firmly bonded, the cost is high, and defective products are easy to occur; thirdly, the manufacturing process adopts a hard processing method of slotting by a tenoning machine, which is more complicated, and the produced leftover materials cause higher cost; and thirdly, the decorative layer adopts a drawing mode to ensure that the authenticity of the picture of the composite floor is lower, particularly when the wood-like floor is manufactured.
Disclosure of Invention
The invention aims to solve the technical problems and provides a manufacturing process of a composite floor, wherein a PU (polyurethane) hard foam base material and a TPU (thermoplastic polyurethane) transparent protective layer are arranged, and the base material and the transparent protective layer are attached by using the self-adhesive property of the materials in a hot injection mode; meanwhile, the contact area is increased by means of unevenness of 3D bark grains arranged on the base material, the problem of complex process in the problems is solved, and meanwhile, the contact is more stable. Meanwhile, the problem of poor pattern authenticity in the problems is solved by using a hot injection mode.
The invention solves the problems and adopts the following technical scheme.
A manufacturing process of a composite floor comprises the following steps:
s1, uniformly mixing wood powder, water, calcium carbonate, diphenylmethane diisocyanate (MDI), polyether glycol, mixed liquid of HQEE and HER, an ultraviolet-proof light absorber UV327, nano-silica, glass fiber, an antioxidant, an anti-yellowing agent and iron oxide red, and then heating and stirring to obtain a plastic fluid; injecting the obtained fluid into a substrate mold for heating and curing; after the fluid in the substrate mold is completely foamed and solidified, opening a mold cover, and cooling to obtain a substrate primary product with 3D bark lines and colors on the surface;
s2, placing the primary base material into a die cavity of a finished product die for later use; uniformly mixing diphenylmethane diisocyanate (MDI), polyether glycol, mixed liquid of HQEE and HER, an ultraviolet-proof light absorber UV327, an anti-yellowing agent, a defoaming agent, polytetrafluoroethylene, nano hydrotalcite, calcium stearate, hydroxyalkyl imidazolidinone, polycarbodiimide and hydroxybenzophenone, then carrying out heating reaction to obtain a plastic fluid, injecting the fluid into a die cavity of a finished product die filled with a base material primary product, and continuously heating; after leveling, a transparent protective layer is formed and cooled, and the composite floor with the transparent protective layer is obtained.
Further, the substrate mold in the step S1 and the finished mold in the step S2 are preheated before being used, and then a mold release agent is applied to the mold cavity.
Further, in the step S1, 35 to 40 parts by weight of wood powder, 10 to 15 parts by weight of calcium carbonate, 8 to 10 parts by weight of iron oxide red, 5 to 8 parts by weight of nano silicon dioxide, 5 to 7 parts by weight of glass fiber and 1.8 parts by weight of anti-yellowing agent.
Further, 25-30 parts by weight of diphenylmethane diisocyanate (MDI), 30-35 parts by weight of polyether polyol, 12-15 parts by weight of a mixed liquid of HQEE and HER, 12-6 parts by weight of an ultraviolet-proof light absorber UV3274, 0.4 part by weight of an anti-yellowing agent, 0.2-0.3 part by weight of a defoaming agent, and 1.5-1.9 parts by weight of polytetrafluoroethylene in the step S2.
Further, the temperature of the substrate mold in the step S1 is controlled at 270 ℃ for 1-1.5 hours.
Further, the temperature value of the raw material reaction in the step S2 is controlled at 350 ℃ and kept at the temperature for 6-6.5 hours.
Further, the temperature of the composite floor finished product mold in the step S2 is kept at 200-230 ℃ during use, and the reaction is continued for 1-1.5 hours.
Furthermore, a 3D bark line is arranged in a die cavity of the base material die, and the thickness of the 3D bark line is controlled to be 0-1 CM.
Further, the thickness of the transparent protective layer is controlled to be 0.2-1.2 CM.
Remarking: when using HQEE/HQEE liquid care should be taken: when the prepolymer is heated and dissolved, the humidity in the air is required to be noticed, and when the humidity is higher than 65 ℃, the prepolymer is required to be quickly mixed after vacuum defoamation in operation, and the rotating speed is more than 150 revolutions.
The anti-yellowing agent of basf is selected.
The nucleating agent can replace crystal nuclei in the processing of the crystallized polymer, so that polymer molecules grow into crystals on the nucleating agent. Due to the addition of the nucleating agent, the number of crystal nuclei which can be crystallized at the melting point of the TPU colloidal particle melt is greatly increased, the crystallization speed is accelerated, and the crystallization particles are micronized, so that the crystallization does not influence the transparency of the film, and the strength and the transparency of the film can be improved at the same time.
Nucleating agents can be classified into organic nucleating agents and inorganic nucleating agents. The organic nucleating agent comprises benzoic acid and sodium benzoate, and the inorganic nucleating agent comprises talcum powder and sodium carbonate. The addition amount is as follows: 0.25 part of sodium benzoate, 0.4 part of benzoic acid, 30.2 parts of sodium carbonate and 0.05 part of talcum powder. For example, when 0.3-0.7% of calcium stearate nucleating agent is added, the transparency of the film can be improved from 67% to 73.5%.
The thermoplastic polyurethane elastomer has two types of polyester and polyether, and has white irregular spherical or columnar grains with relative density of 1.10-1.25 and polyether density lower than that of polyester. The brittleness temperature of the polyether type and the polyester type is lower than-62 ℃, and the low temperature resistance of the hard ether type is concerned with the polyester type.
The polyurethane thermoplastic elastomer has the outstanding characteristics of excellent wear resistance, excellent ozone resistance, high hardness, high strength, good elasticity, low temperature resistance, good oil resistance, chemical resistance and environmental resistance, and the hydrolysis stability of polyether ester in a humid environment is far higher than that of polyester.
The addition of the nano hydrotalcite and the stearate is beneficial to improving the thermal stability of the TPU film, and can also improve the elongation and the hardness of the TPU film; in addition, polytetrafluoroethylene also improves thermal stability.
The selection and the proportion of the alicyclic diisocyanate and the toluene diisocyanate have obvious effects on improving the transparency and the mechanical property of the TPU film;
the selection and the proportion of the defoaming agent, the ultraviolet absorbent, the anti-yellowing agent and the polytetrafluoroethylene can enable the TPU film to resist yellowing and resist ultraviolet rays, have high light transmittance and maintain lasting good transparency, and the transparency cannot be reduced due to environmental factors such as long-term oxidation.
In conclusion, the invention has the following beneficial effects:
1. the method is characterized in that wood powder, water, calcium carbonate, diphenylmethane diisocyanate (MDI), polyether glycol, mixed liquid of HQEE and HER, an ultraviolet-proof light absorber UV327, nano-silica, glass fiber, an antioxidant, an anti-yellowing agent and iron oxide red are uniformly mixed, and then the mixture is heated and stirred to obtain plastic fluid; the fluid is injected into the base material die provided with the 3D bark template for heating reaction, so that the primary product of the base material of the composite floor with the same grain and color as the real wood is prepared, and compared with a drawing pasting or printing mode adopted in the prior art, the visual authenticity of the composite floor is improved;
2. according to the invention, the diphenylmethane diisocyanate (MDI), polyether polyol, mixed liquid of HQEE and HER, the ultraviolet-proof light absorber UV327, the anti-yellowing agent, the defoaming agent, polytetrafluoroethylene, nano hydrotalcite, calcium stearate, hydroxyalkyl imidazolidinone, polycarbodiimide and hydroxybenzophenone are uniformly mixed, and then the mixture is heated to react to prepare the protective layer with extremely high light transmittance, so that the lines of the 3D trees can be completely displayed, and the authenticity of the composite floor is ensured; the materials are attached by using the self-adhesive property of the materials; meanwhile, the contact area is increased by means of the unevenness of the 3D bark lines arranged on the base material, so that the problem of complex process in the prior art is solved, and the contact is more stable;
3. according to the invention, the waste wood products are cleaned, dried and crushed to obtain the wood powder with the diameter less than 0.2um as the raw material, so that a large amount of chemical raw materials can be saved, natural resources can be fully utilized, and the method has the advantages of environmental protection and low cost;
4. the invention is based on the formula of a mixed liquid ultraviolet-proof light absorber UV327, an anti-yellowing agent, a defoaming agent and polytetrafluoroethylene of diphenylmethane diisocyanate (MDI), polyether polyol, HQEE and HER, and the mixed liquid ultraviolet-proof light absorber UV327, the anti-yellowing agent, the defoaming agent and the polytetrafluoroethylene are injected into a composite floor finished product mold with the temperature of 200-230 ℃ for continuous reaction for 1-1.5 hours. The light transmittance of the prepared composite floor can reach 99.8%, and meanwhile, the elasticity, the oxidation resistance and the wear resistance of the transparent protective layer can be ensured;
5. according to the invention, the substrate mould and the composite floor finished product mould are preheated before use, and then the mould cavity of the mould is coated with the release agent, so that a large contrast can not be generated when high-temperature fluid is in contact with the mould cavity when the high-temperature fluid is injected into the mould, and the manufactured substrate or transparent protective layer can not generate deviation; and simultaneously, the residual release agent in the last manufacturing process can be removed.
6. According to the invention, the thickness of the 3D bark grain is a, the thickness of the transparent protection layer is b, and when the transparent protection layer is compounded with the base material provided with the 3D bark layer, a gully is formed on the surface of the transparent protection layer, which is in contact with the base material, so that a refraction transparent layer is formed, the 3D bark layer generates refraction through the transparent protection layer, the reality degree of the pattern is greatly attenuated, and further, the size of a is controlled to be 0-1CM, and the size of b is controlled to be 0.2-1.2CM, so that the problem that the 3D bark layer is not realistic in vision due to refraction is solved; meanwhile, when a user tramples, the deformation of the TPU ensures that the touch feeling of trampling is real, and the TPU can also play a role in protecting the 3D bark layer.
Detailed Description
The present invention will be described in further detail below.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Examples
The invention solves the problems and adopts the following technical scheme.
A manufacturing process of a composite floor comprises the following steps:
s1, firstly, cleaning, drying and crushing the waste wood products to obtain wood powder with the diameter less than 0.2 um; uniformly mixing the obtained wood powder with water, calcium carbonate, diphenylmethane diisocyanate (MDI), polyether polyol, mixed liquid of HQEE and HER, an ultraviolet-proof light absorber UV327, nano-silica, glass fiber, an antioxidant, an anti-yellowing agent and iron oxide red, and then heating, stirring and foaming the mixture to obtain a plastic fluid; injecting the obtained high-temperature fluid into a base material mold with a 3D bark template in a mold cavity for heating reaction; and after the fluid in the mold is completely foamed and solidified, opening a mold cover, and cooling to obtain a base material primary product with 3D bark lines and colors on the surface. The temperature of the substrate mold is controlled at 220-270 ℃ for 1-1.5 hours when the substrate mold is used. Wherein, the wood powder accounts for 35 to 40 weight portions, the calcium carbonate accounts for 10 to 15 weight portions, the iron oxide red accounts for 8 to 10 weight portions, the nano silicon dioxide accounts for 5 to 8 weight portions, the glass fiber accounts for 5 to 7 weight portions, and the anti-yellowing agent accounts for 1.8 weight portions.
S2, placing the primary base material into a die cavity of a die for a finished composite floor board for later use; uniformly mixing raw materials of diphenylmethane diisocyanate (MDI), polyether glycol, mixed liquid of HQEE and HER, an ultraviolet-proof light absorber UV327, an anti-yellowing agent, a defoaming agent, polytetrafluoroethylene, nano hydrotalcite, calcium stearate, hydroxyalkyl imidazolidinone, polycarbodiimide and hydroxybenzophenone, then carrying out heating reaction to obtain a plastic fluid, and injecting the fluid into a mold cavity of a composite floor finished product mold filled with a base material primary product for continuous heating; then cooling the temperature of the composite floor finished product mold to room temperature to obtain a primary composite floor with a transparent protective layer;
wherein, the substrate mold in the step S1 and the composite floor finished product mold in the step S2 are preheated before use, and then a mold release agent is used to coat the mold cavity of the mold.
In the step S2, 25 parts by weight of diphenylmethane diisocyanate (MDI), 35 parts by weight of polyether polyol, 12 parts by weight of a mixed liquid of HQEE and HER, 3274 parts by weight of an ultraviolet light absorber, 0.4 part by weight of an anti-yellowing agent, 0.2 part by weight of a defoaming agent, and 1.5 parts by weight of polytetrafluoroethylene. The temperature value at the time of the reaction of the raw materials was controlled at 320 degrees celsius for a reaction time of 6.5 hours. When the composite floor finished product mold is used, the temperature is kept at 200-230 ℃, and the reaction is continued for 1-1.5 hours.
Wherein, the thickness of the base material of the finished composite floor is 15mm-50 mm; the thickness of the transparent protective layer is 2mm-3 mm.
Example 2
Different from example 1, 27.5 parts by weight of diphenylmethane diisocyanate (MDI), 32.5 parts by weight of polyether polyol, 12.5 parts by weight of a mixed liquid of HQEE and HER, 3275 parts by weight of an ultraviolet light absorber, 0.4 part by weight of an anti-yellowing agent, 0.25 part by weight of a defoaming agent, and 1.7 parts by weight of polytetrafluoroethylene were used in step S2. The temperature value at the time of the reaction of the raw materials was controlled to 330 degrees celsius for a reaction time of 6.25 hours.
Example 3
Different from examples 1 and 2, in step S2, 30 parts by weight of diphenylmethane diisocyanate (MDI), 30 parts by weight of polyether polyol, 15 parts by weight of a mixed liquid of HQEE and HER, an ultraviolet light absorber UV3276, 0.5 part by weight of an anti-yellowing agent, 0.3 part by weight of a defoaming agent, and 1.9 parts by weight of polytetrafluoroethylene were used. The temperature value at the time of the reaction of the raw materials was controlled to 330 degrees celsius for a reaction time of 6.0 hours.
And (3) testing:
the TPU transparent protective layers prepared in the three examples are cut into nine samples to be tested with the size of 25 multiplied by 25mm, and the mechanical property test is carried out according to the method of GB/T528-; the anti-yellowing grade is tested according to the method and the standard of HG/T3689-2001; the sample to be tested is directly irradiated for 150 days in the sun, and then the light transmittance of the sample is tested according to the method of GB/T2410-2008. The TPU film has the advantages that the tensile strength is more than 80MPa, the elastic modulus is more than 0.2MPa, the tear strength is more than 100kg/cm, the elongation is more than 600%, the Shore hardness is 80-100A, the light transmittance is more than 95%, and the yellowing resistance grade is 5-6; while the common tensile strength is only 40-50MPa, the elastic modulus is below 0.15MPa, the tearing strength is 50-70kg/cm, the elongation is basically 350-.
Subsequently, all samples to be tested were subjected to a thermal stability test using a STA449C integrated thermal analyzer of NESTCH, germany. The test conditions were: the reaction is carried out in an N2 atmosphere, the flow rate of carrier gas is 50mL/min, the heating rate is 20 ℃/min, and the temperature is increased from 100 ℃ to 1000 ℃. Thermogravimetric curves (TG curves) and differential quotient thermogravimetric curves (DTG curves) were obtained for the respective test samples. The 5% weight loss temperature of the examples was determined by the double tangent method from the TG curve and the DTG curve.
Test subject 5% weight loss temperature (deg.C) samples 1, 301.73; sample 2, 302.46; sample 3, 305.19; sample 4, 392.87; sample 5, 388.51; sample 6, 396.24; sample 7, 440.98; sample 8, 451.02; sample 9, 454.65.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (9)
1. The manufacturing process of the composite floor is characterized by comprising the following steps of:
s1, uniformly mixing wood powder, water, calcium carbonate, diphenylmethane diisocyanate (MDI), polyether glycol, mixed liquid of HQEE and HER, an ultraviolet-proof light absorber UV327, nano-silica, glass fiber, an antioxidant, an anti-yellowing agent and iron oxide red, and then heating and stirring to obtain a plastic fluid; injecting the obtained fluid into a substrate mold for heating and curing; after the fluid in the substrate mold is completely foamed and solidified, opening a mold cover, and cooling to obtain a substrate primary product with 3D bark lines and colors on the surface;
s2, placing the primary base material into a die cavity of a finished product die for later use; uniformly mixing diphenylmethane diisocyanate (MDI), polyether glycol, mixed liquid of HQEE and HER, an ultraviolet-proof light absorber UV327, an anti-yellowing agent, a defoaming agent, polytetrafluoroethylene, nano hydrotalcite, calcium stearate, hydroxyalkyl imidazolidinone, polycarbodiimide and hydroxybenzophenone, then carrying out heating reaction to obtain a plastic fluid, injecting the fluid into a die cavity of a finished product die filled with a base material primary product, and continuously heating; after leveling, a transparent protective layer is formed and cooled, and the composite floor with the transparent protective layer is obtained.
2. The process of claim 1, wherein the process comprises the steps of: the substrate mold in the step S1 and the finished mold in the step S2 are preheated before being used, and then a mold release agent is applied to the mold cavity.
3. The process of claim 1, wherein the process comprises the steps of: in the step S1, 35-40 parts by weight of wood powder, 10-15 parts by weight of calcium carbonate, 8-10 parts by weight of iron oxide red, 5-8 parts by weight of nano silicon dioxide, 5-7 parts by weight of glass fiber and 1.8 parts by weight of anti-yellowing agent.
4. The process of claim 1, wherein the process comprises the steps of: 25-30 parts of diphenylmethane diisocyanate (MDI), 30-35 parts of polyether polyol, 12-15 parts of mixed liquid of HQEE and HER, 0.4 part of ultraviolet-proof absorbent UV3274-6 parts of anti-yellowing agent, 0.2-0.3 part of defoaming agent and 1.5-1.9 parts of polytetrafluoroethylene in the step S2.
5. The process of claim 1, wherein the process comprises the steps of: the temperature of the substrate mold in the step S1 is controlled at 220-270 ℃ for 1-1.5 hours.
6. The process of claim 1, wherein the process comprises the steps of: the temperature value of the raw material in the step S2 during the reaction is controlled at 320-350 ℃, and the reaction time is kept between 6-6.5 hours.
7. The process of claim 1, wherein the process comprises the steps of: the temperature of the finished mold in the step S2 is kept at 200-230 ℃ during use, and the reaction is continued for 1-1.5 hours.
8. The process of claim 1, wherein the process comprises the steps of: and 3D bark grains are arranged in a die cavity of the base material die, and the thickness of the 3D bark grains is controlled to be 0-1 CM.
9. The process of claim 1, wherein the process comprises the steps of: the thickness of the transparent protective layer is controlled to be 0.2-1.2 CM.
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