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 PDFInfo
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- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE 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
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/12—Moulding of mats from fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE 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
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE 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
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/20—Moulding or pressing characterised by using platen-presses
- B27N3/203—Moulding or pressing characterised by using platen-presses with heating or cooling means
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives 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
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives 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
- C09J123/10—Homopolymers or copolymers of propene
- C09J123/12—Polypropene
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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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
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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| CN111015886A (en) * | 2019-11-28 | 2020-04-17 | 东营市盛基环保工程有限公司 | Production process of uniform-density straw artificial board |
| CN113445370A (en) * | 2021-07-13 | 2021-09-28 | 中国农业科学院麻类研究所 | Glue-free straw material, preparation method and application thereof |
| CN113580314A (en) * | 2021-07-30 | 2021-11-02 | 安徽鎏彩生物科技有限公司 | Plant straw ecological plate and preparation method thereof |
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