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CN109571703A - It is a kind of for the auxiliary agent of artificial board of straw and the preparation method of artificial board of straw - Google Patents

It is a kind of for the auxiliary agent of artificial board of straw and the preparation method of artificial board of straw Download PDF

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Publication number
CN109571703A
CN109571703A CN201811614821.9A CN201811614821A CN109571703A CN 109571703 A CN109571703 A CN 109571703A CN 201811614821 A CN201811614821 A CN 201811614821A CN 109571703 A CN109571703 A CN 109571703A
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CN
China
Prior art keywords
straw
artificial board
auxiliary agent
stalk
parts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201811614821.9A
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Chinese (zh)
Inventor
赵祈涵
马敬环
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Tianjin Haiyuanhui Technology Co Ltd
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Tianjin Haiyuanhui Technology Co Ltd
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Priority to CN201811614821.9A priority Critical patent/CN109571703A/en
Publication of CN109571703A publication Critical patent/CN109571703A/en
Withdrawn legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08Moulding or pressing
    • B27N3/10Moulding of mats
    • B27N3/12Moulding of mats from fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08Moulding or pressing
    • B27N3/18Auxiliary operations, e.g. preheating, humidifying, cutting-off
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27NMANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08Moulding or pressing
    • B27N3/20Moulding or pressing characterised by using platen-presses
    • B27N3/203Moulding or pressing characterised by using platen-presses with heating or cooling means
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/04Non-macromolecular additives inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/06Non-macromolecular additives organic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/04Homopolymers or copolymers of ethene
    • C09J123/06Polyethene
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/10Homopolymers or copolymers of propene
    • C09J123/12Polypropene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2217Oxides; Hydroxides of metals of magnesium
    • C08K2003/2224Magnesium hydroxide
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/30Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045Sulfates

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Inorganic Chemistry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

The present invention provides the preparation method of a kind of auxiliary agent for artificial board of straw and artificial board of straw, and in parts by weight, auxiliary agent consists of the following compositions: 3~10 parts of fire retardant, 5~20 parts of reinforcing agent, 0~10 part of preservative, 0~10 part of waterproofing agent.The present invention is using agricultural crop straw as primary raw material, compound inorganic compound and Organic chemical products nontoxic, without aldehyde, without adhesive, under the high temperature conditions by the owned sugar of stalk, aldehyde, phenolic substances, spontaneous polymerization (condensation) formation is high-intensitive, fire-retardant, moisture-proof, be not easy to go mouldy, the straw board of zero formaldehyde, building materials, logistics tray etc..

Description

It is a kind of for the auxiliary agent of artificial board of straw and the preparation method of artificial board of straw
Technical field
The present invention relates to the preparation method of a kind of auxiliary agent for artificial board of straw and artificial board of straw, especially artificial straw Selection, the selection of auxiliary agent type and its production technology of stalk plate raw material, belong to sheet processes field.
Background technique
China is large agricultural country, possesses stalk resource abundant, counts according to investigations, national stalk theoretical resources amount in 2015 It is 10.4 hundred million tons, collectable stock number is about 900,000,000 tons, and utilization is about 7.2 hundred million tons, and stalk comprehensive utilization rate reaches 80.1%; Wherein Fertilizer Transformed, which accounts for 43.2%, fodder and accounts for 18.8%, turning sludge into fuel and account for 11.4%, base-material and account for 4.0%, raw material, accounts for 2.7%, It basically forms based on Fertilizer Transformed utilization, fodder, turning sludge into fuel move forward steadily, and base-material, raw material turn to auxiliary comprehensive utilization pattern.
For a long time, stalk is taken as always castoff burning and falls, and brings serious pollution to atmospheric environment.In recent years by Increasingly significant in the wood-base fibre and particle panel material industry shortage of raw materials the problem of, people begin look for the original of alternative wood producing wood-based plate Material.The main chemical compositions of stalk are as follows: cellulose, hemicellulose and lignin, it is very similar with the chemical composition of timber, it is complete Timber manufacture wood-based plate can be substituted entirely.Furthermore one layer of natural wax is contained on stalk fibre raw material surface, can play It is equivalent to the moisture-proof efficiency of paraffin wax additives in moist-proof board;It is rich in silica in stalk fibre, belongs to natural noninflammable material.With Stalk replaces wood producing wood-based plate, not only can effectively alleviate the status largely consumed for traditional construction material resource at present, It economizes on resources and the energy, safeguards the ecological balance in the whole world, and can solve that china natural resources utilization rate is low, reduce the dirt of atmosphere Dye opens up new direction for the utilization of stalk resource.
Traditional wood-base fibre and particle panel material would generally be used as adhesive using phenolic resin and Lauxite etc. in process of production, And most of adhesive can all discharge a large amount of pernicious gas in the use process of production, have been unable to meet people to health and The requirement of green living.Since one layer of natural wax is contained on stalk surface, so that traditional adhesive is being applied to stalk board The problem that glue performance difference can be faced in material, which limits application of traditional adhesive in artificial straw board;And nothing The MDI glue of Form aldehyde release, preparation process is complicated, only has a few chemical industry giant that can produce the gluing in the world at present Agent, so its price is higher by 20 times than traditional adhesive;So being badly in need of developing a kind of new technique at present, glue is not being used In the case where stick, a kind of green and pollution-free artificial straw board is produced.Patent CN 103358377 proposes one Kind preparation method of the steam puffed stalk without glue environment friendly artificial board, although this method does not use adhesive, steam explosion method needs Stalk cell wall structure is destroyed by high pressure and steam pre-treatment, operating procedure is complicated, and higher cost is not easy to industrialize.
Summary of the invention
For above situation, the purpose of the present invention is to provide a kind of auxiliary agents and artificial board of straw for artificial board of straw Preparation method, improve stalk utilization rate, reduce process costs, with compound it is nontoxic, without aldehyde, without the inorganization of adhesive It closes the adhesives such as object and Organic chemical products auxiliary agent substitution phenolic resin, Lauxite and realizes the environmentally protective of wood-based plate, with reality Existing gluing-free.
For the relevant issues for solving background technique, the present invention provides a kind of auxiliary agent for artificial board of straw, according to weight Number meter, consists of the following compositions: 3~10 parts of fire retardant, 5~20 parts of reinforcing agent, 0~10 part of preservative, waterproofing agent 0~10 Part.
Preferably, fire retardant includes inorganic fire retardants and bromine system organic fire-retardant;Inorganic fire retardants is Mg (OH)2、Al (OH)3One or both of;Bromine system organic fire-retardant be one of methylene bromide, trichlorobromomethane and two chlorobromomethanes or It is several.
Preferably, the reinforcing agent is the CaSO containing the crystallization water4、CaCO3Or one or more of cotton, fiber crops.
Preferably, the preservative is one or both of P-hydroxybenzoic acid lipid or phenols.
Preferably, the hydroxybenzoic acid lipid can be methyl p-hydroxybenzoate, ethyl-para-hydroxybenzoate, to hydroxyl One or more of yl benzoic acid propyl ester, butyl p-hydroxybenzoate and p-Hydroxybenzoic acid isobutyl ester.
Preferably, the phenols can be one or more of phenol, ortho position cresols, meta position cresols.
Preferably, the waterproofing agent is one or more of polypropylene, polyethylene, polyvinyl chloride, non-woven fabrics.
That is, the auxiliary agent is the compound of fire retardant, reinforcing agent, preservative, it is added in stalk after mixing hot pressing and enhances Anti-flammability, intensity, the anti-mildew of product;Appropriate waterproofing agent is added, the elasticity modulus and toughness of product are improved.Tradition is broken The technique that adhesive must be added in plate manufacturing process, raw material sources are extensively, simple process, production cost be low, product density It is low, solve the problems, such as artificial board of straw release formaldehyde.
In addition, the present invention, which also resides in, discloses a kind of method for preparing artificial board of straw using above-mentioned auxiliary agent, the wood-based plate Raw material are as follows: 52~90 parts of stalk, 8~50 parts of auxiliary agent;
The method for preparing artificial board of straw includes following key step:
(1) stalk pre-processes: stalk being sent with screw rod conveyor to pulverizer crushing, comminuting matter length is 0.1~5cm;Silk is rubbed through wire kneading machine again, rubs to be sent in cyclone dust collectors by conveyer belt after silk and removes soil, rubble and impurity Fall, is sent into drying machine via air blower, drying to moisture content is 5~10%;
(2) mix with mat formation: the stalk after dry enters material-compound tank and mixes with auxiliary agent according to compound proportion;Mixing is equal It send through screw rod conveyor to transmission belt and mats formation after even;
(3) precompressed is handled: carrying out precompressed to the material after mating formation;Squeeze time is 30~300s;Compressed thickness be 3~ 30cm;
(4) hot-pressing processing: again into hot press hot pressing after precompressed, hot pressing temperature is 150~240 DEG C, hot pressing time is 30~ 600s;
(5) cutting action: plate is sent into automatic gas cutting machine after hot pressing, cuts on automatic cutting platform, first longitudinal to cut then horizontal To cutting, the plate of excision forming carries out accurate weighing again;
(6) polishing treatment: being processed by shot blasting the plate of excision forming, that is, obtains the biological fiber zero for being free of adhesive Formaldehyde environmental protection board;
(7) scrap loop: the remaining plate of cutting is admitted to recycling dismembyator in step (5), is cut into original fiber Size is then fed into storage silo and mixes with other raw materials.
Preferably, the nominal thickness of the zero formaldehyde environmental protection board of biological fiber without adhesive is 6~9mm;Moisture content It is 3.0~13.0%;Density > 0.65g/cm3;Static bending strength >=25MPa;Internal bond strength >=0.60MPa;Elasticity modulus >= 2500MPa;Burst size of methanal≤0.35mg/100g.
Preferably, the stalk is corn stalk, cotton straws, peanut straw, wheat straw, one in rice straw Kind.
Preferably, the raw material is also possible to the mixture of agricultural crop straw and sawdust, wherein sawdust accounts for the quality of raw material Score is 0~90%.
It should be noted that the present invention be using agricultural crop straw as primary raw material, compound it is nontoxic, without aldehyde, without gluing The inorganic compound and Organic chemical products of agent, under the high temperature conditions by the owned sugar of stalk, aldehyde, phenolic substances, certainly Hair polymerization (condensation) formation is high-intensitive, fire-retardant, moisture-proof, be not easy to go mouldy, the straw board of zero formaldehyde, building materials, logistics tray etc..
The raw material materials that the research and development of the technology solve previous straw plate, which limit, viscose glue is single, meet water softens, and intensity is not Enough, poor flame retardant properties and the problems such as containing formaldehyde, can really substitute wooden wood-based plate, building materials, logistics tray etc., realize discarded The utilization of resources.
The present invention using agricultural crop straw as primary raw material, compound it is nontoxic, without aldehyde, the inorganic compound without adhesive and have Machine chemical products realize the comprehensive utilization to waste straw resource, produce environmentally protective straw board.The present invention has as follows Major advantage:
1) panel density is light, density is small, is free of adhesive, formaldehydeless release, green non-pollution;
2) fire retardant can enhance the anti-corrosion of straw board, insect prevention, anti-mildew energy;
3) reinforcing agent can enhance the performances such as the hardness of straw board;
4) straw board of technology production has heat insulation effect, can be used as insulation board use;
5) it can be directly used as logistics tray, solving current wooden logistics tray need to be handled through high temperature fumigation, simplified object Flow the preparation process of pallet;
6) due to not using adhesive, the discarded leftover pieces generated in cutting process are recyclable to be recycled, entire process section It realizes without solid waste.
Detailed description of the invention
Fig. 1 is production technological process of the invention.
Specific embodiment
Using corn stover as the embodiment of raw material:
Embodiment 1
1. the preparation of corn stover wood-based plate natural promoter:
By 10 parts of Mg (OH)2, 5 parts of CaSO4, 1.5 parts of methyl p-hydroxybenzoates, 3 parts of polypropylene be mixed evenly, obtain To stalk auxiliary agent, it is convenient for later period ingredient.
2. the preparation of corn stover wood-based plate:
(1) corn stover that 80.5 parts of moisture content are 12% is sent with screw rod conveyor to pulverizer crushing, crushed material Material length is 0.5cm;Silk is rubbed through wire kneading machine again, rubs and is sent in cyclone dust collectors by conveyer belt by soil, rubble and miscellaneous after silk Matter is removed, and is sent into drying machine via air blower, drying to moisture is lower than 8%.
(2) mix with mat formation: corn stover enters material-compound tank and mixes with the auxiliary agent prepared in advance after dry;Mixing is equal It send through screw rod conveyor to transmission belt and mats formation after even;
(3) precompressed is handled: the material after mating formation carries out precompressed;Squeeze time is 120s;It is compressed to the thickness of 5cm.
(4) hot-pressing processing: again into hot press hot pressing after precompressed, hot pressing temperature is 150 DEG C, hot pressing time 300s;
(5) cutting action: plate is sent into automatic gas cutting machine after hot pressing, cuts on automatic cutting platform, first longitudinal to cut then horizontal To cutting, the plate of excision forming carries out accurate weighing again;
(6) polishing treatment: being processed by shot blasting the plate of excision forming, can be obtained the corn stover without adhesive Zero formaldehyde environmental protection board of fiber;
(7) scrap loop: the remaining plate of cutting is admitted to recycling dismembyator in step (5), is cut into original fiber Size is then fed into storage silo and mixes with other raw materials.
Detection: to artificial board of straw obtained referring to GB/T19367~2009 and the national standard of GB/T31765~2015 into The detection of row physicochemical property and burst size of methanal detection, testing result are shown in Table 1.
Using cotton straws as the embodiment of raw material:
Embodiment 2
1. the preparation of cotton stalk wood-based plate natural promoter:
By 7 parts of Mg (OH)2, 10 parts of CaSO4, 5.5 parts of phenol, 2 parts of polyethylene be mixed evenly to obtain stalk auxiliary agent, just In later period ingredient.
2. the preparation of cotton stalk wood-based plate:
(1) cotton stalk that 75.5 parts of moisture content are 13% is sent with screw rod conveyor to pulverizer crushing, crushed material Material length is 1.5cm;Silk is rubbed through wire kneading machine again, rubs and is sent in cyclone dust collectors by conveyer belt by soil, rubble and miscellaneous after silk Matter is removed, and is sent into drying machine via air blower, drying to moisture is lower than 9%.
(2) mix with mat formation: cotton stalk enters material-compound tank and mixes with the auxiliary agent prepared in advance after dry;Mixing is equal It send through screw rod conveyor to transmission belt and mats formation after even;
(3) precompressed is handled: the material after mating formation carries out precompressed;Squeeze time is 120s;It is compressed to the thickness of 4cm.
(4) hot-pressing processing: again into hot press hot pressing after precompressed, hot pressing temperature is 200 DEG C, hot pressing time 60s;
(5) cutting action: plate is sent into automatic gas cutting machine after hot pressing, cuts on automatic cutting platform, first longitudinal to cut then horizontal To cutting, the plate of excision forming carries out accurate weighing again;
(6) polishing treatment: being processed by shot blasting the plate of excision forming, can be obtained the cotton stalk without adhesive Zero formaldehyde environmental protection board of fiber;
(7) scrap loop: the remaining plate of cutting is admitted to recycling dismembyator in step (5), is cut into original fiber Size is then fed into storage silo and mixes with other raw materials.
Detection: to artificial board of straw obtained referring to GB/T19367~2009 and the national standard of GB/T31765~2015 into The detection of row physicochemical property and burst size of methanal detection, testing result are shown in Table 1.
Using peanut straw as the embodiment of raw material:
Embodiment 3
1. the preparation of peanut straw wood-based plate natural promoter:
By 6 parts of Mg (OH)2, 17 parts of CaSO4, 6 parts of methyl p-hydroxybenzoates, 3 parts of polyethylene are mixed evenly to obtain straw Stalk auxiliary agent is convenient for later period ingredient.
2. the preparation of peanut straw wood-based plate:
(1) peanut straw that 68 parts of moisture content are 14% is sent with screw rod conveyor to pulverizer crushing, comminuting matter Length is 2cm;Silk is rubbed through wire kneading machine again, rubs to be sent in cyclone dust collectors by conveyer belt after silk and removes soil, rubble and impurity Fall, is sent into drying machine via air blower, drying to moisture is lower than 8%.
(2) mix with mat formation: peanut straw enters material-compound tank and mixes with the auxiliary agent prepared in advance after dry;Mixing is equal It send through screw rod conveyor to transmission belt and mats formation after even;
(3) precompressed is handled: the material after mating formation carries out precompressed;Squeeze time is 60s;It is compressed to the thickness of 3cm.
(4) hot-pressing processing: again into hot press hot pressing after precompressed, hot pressing temperature is 200 DEG C, hot pressing time 60s;
(5) cutting action: plate is sent into automatic gas cutting machine after hot pressing, cuts on automatic cutting platform, first longitudinal to cut then horizontal To cutting, the plate of excision forming carries out accurate weighing again;
(6) polishing treatment: being processed by shot blasting the plate of excision forming, can be obtained the peanut straw without adhesive Zero formaldehyde environmental protection board of fiber;
(7) scrap loop: the remaining plate of cutting is admitted to recycling dismembyator in step (5), is cut into original fiber Size is then fed into storage silo and mixes with other raw materials.
Detection: to artificial board of straw obtained referring to GB/T19367~2009 and the national standard of GB/T31765~2015 into The detection of row physicochemical property and burst size of methanal detection, testing result are shown in Table 1.
Using wheat straw as the embodiment of raw material:
Embodiment 4
1. the preparation of wheat stalk wood-based plate natural promoter:
By 7 parts of Mg (OH)2, 14 parts of CaSO4, 5 parts of ethyl-para-hydroxybenzoates, 5 parts of polyethylene are mixed evenly to obtain straw Stalk auxiliary agent is convenient for later period ingredient.
2. the preparation of wheat stalk wood-based plate:
(1) wheat stalk that 69 parts of moisture content are 11% is sent with screw rod conveyor to pulverizer crushing, comminuting matter Length is 5cm;Silk is rubbed through wire kneading machine again, rubs to be sent in cyclone dust collectors by conveyer belt after silk and removes soil, rubble and impurity Fall, is sent into drying machine via air blower, drying to moisture is lower than 7%.
(2) mix with mat formation: wheat stalk enters material-compound tank and mixes with the auxiliary agent prepared in advance after dry;Mixing is equal It send through screw rod conveyor to transmission belt and mats formation after even;
(3) precompressed is handled: the material after mating formation carries out precompressed;Squeeze time is 120s;It is compressed to the thickness of 5cm.
(4) hot-pressing processing: again into hot press hot pressing after precompressed, hot pressing temperature is 180 DEG C, hot pressing time 60s;
(5) cutting action: plate is sent into automatic gas cutting machine after hot pressing, cuts on automatic cutting platform, first longitudinal to cut then horizontal To cutting, the plate of excision forming carries out accurate weighing again;
(6) polishing treatment: being processed by shot blasting the plate of excision forming, can be obtained the wheat stalk without adhesive Zero formaldehyde environmental protection board of fiber;
(7) scrap loop: the remaining plate of cutting is admitted to recycling dismembyator in step (5), is cut into original fiber Size is then fed into storage silo and mixes with other raw materials.
Detection: to artificial board of straw obtained referring to GB/T19367~2009 and the national standard of GB/T31765~2015 into The detection of row physicochemical property and burst size of methanal detection, testing result are shown in Table 1.
Embodiment 5
1. the preparation of rice straw wood-based plate natural promoter:
By 6 parts of Mg (OH)2, 15 parts of CaSO4, 7 parts of methyl p-hydroxybenzoates, 6 parts of polyethylene, be mixed evenly to obtain Stalk auxiliary agent is convenient for later period ingredient.
2. the preparation of rice straw wood-based plate:
(1) rice straw that 66 parts of moisture content are 15% is sent with screw rod conveyor to pulverizer crushing, comminuting matter Length is 0.5cm;Silk is rubbed through wire kneading machine again, is sent in cyclone dust collectors by conveyer belt by soil, rubble and impurity after rubbing silk It removes, is sent into drying machine via air blower, drying to moisture is lower than 9%.
(2) mix with mat formation: rice straw enters material-compound tank and mixes with the auxiliary agent prepared in advance after dry;Mixing is equal It send through screw rod conveyor to transmission belt and mats formation after even;
(3) precompressed is handled: the material after mating formation carries out precompressed;Squeeze time is 120s;It is compressed to the thickness of 5cm.
(4) hot-pressing processing: again into hot press hot pressing after precompressed, hot pressing temperature is 200 DEG C, hot pressing time 30s;
(5) cutting action: plate is sent into automatic gas cutting machine after hot pressing, cuts on automatic cutting platform, first longitudinal to cut then horizontal To cutting, the plate of excision forming carries out accurate weighing again;
(6) polishing treatment: being processed by shot blasting the plate of excision forming, can be obtained the rice straw without adhesive Zero formaldehyde environmental protection board of fiber;
(7) scrap loop: the remaining plate of cutting is admitted to recycling dismembyator in step (5), is cut into original fiber Size is then fed into storage silo and mixes with other raw materials.
Detection: to artificial board of straw obtained referring to GB/T19367~2009 and the national standard of GB/T31765~2015 into The detection of row physicochemical property and burst size of methanal detection, testing result are shown in Table 1.
1 testing result of table
One embodiment of the present invention has been described in detail above, but the content is only preferable implementation of the invention Example, should not be considered as limiting the scope of the invention.It is all according to all the changes and improvements made by the present patent application range Deng should still be within the scope of the patent of the present invention.

Claims (10)

1. a kind of auxiliary agent for artificial board of straw, which is characterized in that in parts by weight, consist of the following compositions: fire-retardant 3~10 parts of agent, 5~20 parts of reinforcing agent, 0~10 part of preservative, 0~10 part of waterproofing agent.
2. a kind of auxiliary agent for artificial board of straw according to claim 1, which is characterized in that fire retardant includes inorganic resistance Fire agent and bromine system organic fire-retardant;Inorganic fire retardants is Mg (OH)2、Al(OH)3One or both of;Bromine system organic fire-retardant For one or more of methylene bromide, trichlorobromomethane and two chlorobromomethanes.
3. a kind of auxiliary agent for artificial board of straw according to claim 1, which is characterized in that the reinforcing agent is containing knot The CaSO of brilliant water4、CaCO3Or one or more of cotton, fiber crops.
4. a kind of auxiliary agent for artificial board of straw according to claim 1, which is characterized in that the preservative is to hydroxyl One or both of yl benzoic acid lipid or phenols.
5. a kind of auxiliary agent for artificial board of straw according to claim 4, which is characterized in that the hydroxybenzoic acid rouge Class can be methyl p-hydroxybenzoate, ethyl-para-hydroxybenzoate, propylparaben, butyl p-hydroxybenzoate and One or more of p-Hydroxybenzoic acid isobutyl ester.
6. a kind of auxiliary agent for artificial board of straw according to claim 4, which is characterized in that the phenols can be benzene One or more of phenol, ortho position cresols, meta position cresols.
7. a kind of auxiliary agent for artificial board of straw according to claim 1, which is characterized in that the waterproofing agent is poly- third One or more of alkene, polyethylene, polyvinyl chloride, non-woven fabrics.
8. a kind of method for preparing artificial board of straw using any auxiliary agent of claim 1~7, which is characterized in that
The raw material of the wood-based plate are as follows: 52~90 parts of stalk, 8~50 parts of auxiliary agent;
The method for preparing artificial board of straw includes following key step:
(1) stalk pre-process: by stalk with screw rod conveyor send to pulverizer crush after, comminuting matter length be 0.1~ 5cm;Silk is rubbed through wire kneading machine again, stalk after silk is rubbed and is sent in cyclone dust collectors by conveyer belt and remove soil, rubble and impurity, It is sent into drying machine via air blower, drying to moisture content is 5~10%;
(2) mix with mat formation: the stalk after dry enters material-compound tank and mixes with auxiliary agent according to compound proportion;After mixing It send through screw rod conveyor to transmission belt and mats formation;
(3) precompressed is handled: carrying out precompressed to the material after mating formation;Squeeze time is 30~300s;Compressed thickness is 3~30cm;
(4) hot-pressing processing: again into hot press hot pressing after precompressed, hot pressing temperature is 150~240 DEG C, and hot pressing time is 30~600s;
(5) cutting action: plate is sent into automatic gas cutting machine after hot pressing, cuts on automatic cutting platform, the plate of excision forming is again Carry out accurate weighing;
(6) polishing treatment: being processed by shot blasting the plate of excision forming, that is, obtains zero formaldehyde of biological fiber for being free of adhesive Environmental protection board;
(7) scrap loop: the remaining plate of cutting is admitted to recycling dismembyator in step (5), is cut into original fiber size, Storage silo is then fed into mix with other raw materials.
9. the method according to claim 8 for preparing artificial board of straw, which is characterized in that the biology without adhesive The nominal thickness of zero formaldehyde environmental protection board of fiber is 6~9mm;Moisture content is 3.0~13.0%;Density > 0.65g/cm3;Quiet Qu Qiang Degree >=25MPa;Internal bond strength >=0.60MPa;Elasticity modulus >=2500MPa;Burst size of methanal≤0.35mg/100g.
10. the method according to claim 8 for preparing artificial board of straw, which is characterized in that the stalk be corn stalk, One of cotton straws, peanut straw, wheat straw, rice straw.
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