CN114763422A - Impact-resistant building material and preparation method thereof - Google Patents
Impact-resistant building material and preparation method thereof Download PDFInfo
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- CN114763422A CN114763422A CN202110492860.1A CN202110492860A CN114763422A CN 114763422 A CN114763422 A CN 114763422A CN 202110492860 A CN202110492860 A CN 202110492860A CN 114763422 A CN114763422 A CN 114763422A
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- 239000004566 building material Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000000835 fiber Substances 0.000 claims abstract description 61
- 229920003023 plastic Polymers 0.000 claims abstract description 21
- 239000004033 plastic Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000010902 straw Substances 0.000 claims description 33
- 235000007164 Oryza sativa Nutrition 0.000 claims description 26
- 235000009566 rice Nutrition 0.000 claims description 26
- 239000000945 filler Substances 0.000 claims description 19
- 239000007822 coupling agent Substances 0.000 claims description 12
- 239000000314 lubricant Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 10
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 10
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 10
- 241000219000 Populus Species 0.000 claims description 10
- 239000011425 bamboo Substances 0.000 claims description 10
- 239000003365 glass fiber Substances 0.000 claims description 8
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- -1 compatilizer Substances 0.000 claims description 5
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 4
- 235000018185 Betula X alpestris Nutrition 0.000 claims description 3
- 235000018212 Betula X uliginosa Nutrition 0.000 claims description 3
- 229920000742 Cotton Polymers 0.000 claims description 3
- 241000218652 Larix Species 0.000 claims description 3
- 235000005590 Larix decidua Nutrition 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 241000209140 Triticum Species 0.000 claims description 3
- 235000021307 Triticum Nutrition 0.000 claims description 3
- 240000008042 Zea mays Species 0.000 claims description 3
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 3
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 3
- 229920006243 acrylic copolymer Polymers 0.000 claims description 3
- 235000010216 calcium carbonate Nutrition 0.000 claims description 3
- 235000005822 corn Nutrition 0.000 claims description 3
- 150000004760 silicates Chemical class 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 4
- 239000010907 stover Substances 0.000 claims 2
- 244000082204 Phyllostachys viridis Species 0.000 claims 1
- 241000209094 Oryza Species 0.000 description 22
- 239000002154 agricultural waste Substances 0.000 description 12
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 10
- 235000019353 potassium silicate Nutrition 0.000 description 10
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 10
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 10
- 241001330002 Bambuseae Species 0.000 description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 9
- 239000000839 emulsion Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 3
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 229920001587 Wood-plastic composite Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical group CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
- 239000011155 wood-plastic composite Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/068—Ultra high molecular weight polyethylene
Abstract
The invention relates to the technical field of buildings, in particular to an impact-resistant building material and a preparation method thereof. The raw materials comprise, by weight, 15-45 parts of natural fibers, 15-50 parts of plastics, 0.5-4 parts of a compatilizer and 10-25 parts of water. The impact-resistant building material provided by the invention has the advantages of high tensile strength, good impact resistance, excellent mechanical property and better water resistance.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to an impact-resistant building material and a preparation method thereof.
Background
The wood fiber resource is a renewable biological resource, the wood-plastic composite material becomes a hot research spot at present, particularly, China is a big agricultural country, and the developed agriculture means that China can generate a large amount of agricultural wastes every year, but the agricultural wastes are poor to recycle, and are treated by adopting a direct incineration mode, so that not only can the environment be polluted, but also the resource is greatly wasted. The plate prepared by utilizing the agricultural wastes is a better recycling mode, but the building material prepared by directly adopting the agricultural wastes has poor mechanical property and durability, and is particularly not suitable for the building material.
In view of the above, the invention particularly provides an impact-resistant building material and a preparation method thereof, which not only can effectively utilize wood resources to prepare the building material, but also the prepared building material has extremely excellent mechanical properties.
Disclosure of Invention
In order to solve the technical problem, the invention provides an impact-resistant building material in a first aspect, which comprises, by weight, 15-45 parts of natural fibers, 15-50 parts of plastics, 0.5-4 parts of a compatilizer and 10-25 parts of water.
Preferably, the natural fiber comprises one or more of corn straw, cotton straw, wheat straw, rice straw, bamboo fiber, poplar fiber, birch fiber and larch fiber.
Preferably, the rice straw is pretreated rice straw, and the weight ratio of the pretreating agent to the rice straw in the pretreatment process is (3-8): (1-2).
Preferably, the plastic comprises one or more of PU, ABS, PP, PVC and PE.
Preferably, the compatibilizer includes at least one of a maleic anhydride graft-type compatibilizer and an acrylic copolymer compatibilizer.
Preferably, the maleic anhydride grafting compatilizer comprises one or more of ABS-g-MAH, PE-g-MAH, PP-g-MAH, SMA, SAN-g-MAH and EVA-g-MAH.
Preferably, the raw materials also comprise 0.5-1.5 parts of coupling agent, 0.5-1 part of lubricant, 5-10 parts of filler and 15-25 parts of glass fiber.
Preferably, the coupling agent includes at least one of a titanate coupling agent and a silane coupling agent.
Preferably, the filler includes at least one of silicates and calcium carbonates.
The second aspect of the present invention provides a method for preparing an impact-resistant building material, comprising the steps of: drying natural fiber, stripping fiber with screw fiber stripper, chopping, sieving, mixing natural fiber, plastic, compatilizer, lubricant, filler and glass fiber, and molding under 8-15 MPa.
Has the advantages that:
1) the impact-resistant building material provided by the invention has the advantages of high tensile strength, good impact resistance and excellent mechanical property.
2) The impact-resistant building material provided by the invention also has good water resistance and phase change performance, and excellent creep resistance and thermodynamic performance.
3) The invention utilizes agricultural wastes to prepare the building material, has low cost, accords with the sustainable development strategy and is suitable for large-scale production.
Detailed Description
In order to solve the technical problems, the first aspect of the invention provides an impact-resistant building material, which comprises, by weight, 15-45 parts of natural fibers, 15-50 parts of plastics, 0.5-4 parts of a compatilizer and 10-25 parts of water.
Natural fiber
The natural fiber is obtained from plants, contains cellulose and lignin, is filled into plastics as a reinforcing phase, and can effectively improve the mechanical property of the plastics.
Preferably, the natural fiber comprises one or more of corn straw, cotton straw, wheat straw, rice straw, bamboo fiber, poplar fiber, birch fiber and larch fiber.
Preferably, the natural fibers include rice straw, bamboo fibers and poplar fibers. The weight ratio of the rice straw, the bamboo fiber and the poplar fiber is (2-7): (3-5): (5-10).
Preferably, the rice straw is pretreated rice straw, and the weight ratio of the pretreating agent to the rice straw in the pretreatment process is (3-8): (1-2).
Preferably, the pretreating agent is a water glass and acrylic emulsion composite pretreating agent. The weight ratio of the water glass to the acrylic emulsion is (3-8): (1-2).
The agricultural wastes are low in price and low in use cost as raw materials, meanwhile, the recycling of the agricultural wastes has important significance on sustainable development, but the agricultural wastes are poor in strength and cannot effectively transmit external force to fibers when used for preparing building materials. The research of the invention finds that the agricultural waste is pretreated, so that the water resistance of the building material is effectively improved, and the building material has extremely excellent phase change performance and mechanical property. It is presumed that the agricultural waste absorbs water glass to increase the rigidity of the agricultural waste, but the water glass and the agricultural waste have high water absorption, so that the water resistance of the produced building board is liable to be poor.
The preparation method of the pretreating agent rice straw comprises the following steps: mixing water glass and acrylic emulsion, adding rice straw, and mixing.
Plastic material
The plastic is an important organic synthetic polymer material, and most plastics are light in weight, stable in chemical property and excellent in performances.
Preferably, the plastic comprises one or more of PU, ABS, PP, PVC and PE.
Preferably, the plastic is PE.
Further preferably, the PE is ultra high molecular weight polyethylene.
Preferably, the ultra-high molecular weight polyethylene has a viscosity average molecular weight of 3.0 x 106-4.0*106。
More preferably, the ultra-high molecular weight polyethylene has a viscosity average molecular weight of 4.3 x 106-4.8*106。
Compatilizer
The compatibilizer can facilitate the compatibility of the natural fibers with the plastic, thereby helping to improve the performance of the building material.
Preferably, the content of the compatilizer is 0.8-3 parts.
Preferably, the compatibilizer includes at least one of a maleic anhydride graft-type compatibilizer and an acrylic copolymer compatibilizer.
Preferably, the maleic anhydride grafting compatilizer comprises one or more of ABS-g-MAH, PE-g-MAH, PP-g-MAH, SMA, SAN-g-MAH and EVA-g-MAH.
More preferably, the maleic anhydride grafting compatilizer is PE-g-MAH.
Preferably, the PE-g-MAH has a grafting degree of 0.9 to 1.5%.
In order to further improve the performance of the building material, the raw material preferably further comprises 0.5-1.5 parts of coupling agent, 0.5-1 part of lubricant, 5-10 parts of filler and 15-25 parts of glass fiber.
Coupling agent
The coupling agent can promote the filler in the system to be combined with natural fibers, plastics and the like, thereby helping to improve the performance of the building material.
Preferably, the coupling agent includes at least one of a titanate coupling agent and a silane coupling agent.
The silane coupling agent comprises one or two of vinyltriethoxysilane, gamma-aminopropyltriethoxysilane, gamma-glycidoxypropyltrimethoxysilane and gamma- (methacryloyloxy) propyltrimethoxysilane.
Lubricant agent
The lubricant can promote the dispersion of the raw materials in the system, improve the friction force among the raw materials and help the raw materials in the system to be mixed more easily.
Preferably, the lubricant comprises one or more of stearic acid and salts thereof, fatty acid and esters thereof, fatty acid amide, polyethylene wax and paraffin.
Filler material
The filler can help improve the performance of the building material and reduce the cost of the building material.
Preferably, the filler includes at least one of silicates and calcium carbonates.
Preferably, the specific surface area of the silicate filler is 330-380m2/kg。
The invention discovers that the building board prepared by selecting the specific natural fiber has extremely excellent mechanical property and high tensile strength. The speculated that the specific natural fiber has high cellulose and lignin content, the added specific natural fiber has good compatibility with the ultra-high molecular weight polyethylene, the combination of the specific natural fiber and the ultra-high molecular weight polyethylene increases the movement resistance, improves the rigidity of the building material, enhances the deformation resistance, and improves the mechanical property of the building material, particularly when the weight ratio of the rice straw, the bamboo fiber and the poplar fiber is (2-7): (3-5): (5-10) the building material has the best comprehensive performance.
The second aspect of the present invention provides a method for preparing an impact-resistant building material, comprising the steps of: drying natural fiber, stripping fiber with screw fiber stripper, chopping, sieving, mixing natural fiber, plastic, compatilizer, lubricant, filler and glass fiber, and molding under 8-15 MPa.
The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.
In addition, the starting materials used are all commercially available, unless otherwise specified.
Examples
Example 1
An impact-resistant building material comprises, by weight, 30 parts of natural fibers, 40 parts of plastics, 1.2 parts of a compatilizer, 0.8 part of a lubricant, 7 parts of a filler, 20 parts of glass fibers and 17 parts of water.
The biological fiber comprises rice straw, bamboo fiber and poplar fiber. The weight ratio of the rice straw, the bamboo fiber and the poplar fiber is 5: 4: 8.
the rice straw is pretreated rice straw, and the weight ratio of the pretreating agent to the rice straw in the pretreatment process is 5: 1.5.
the pretreating agent is a water glass and acrylic emulsion composite pretreating agent. The weight ratio of the water glass to the acrylic emulsion is 5: 1. the acrylic emulsion is purchased from Wuhan, a co-creation science and technology company Limited.
The preparation method of the pretreated rice straw comprises the following steps: mixing water glass and acrylic emulsion, adding rice straw, and mixing.
The plastic is ultra-high molecular weight polyethylene. The viscosity average molecular weight of the ultra-high molecular weight polyethylene is 4.5 x 106. The ultra-high molecular weight polyethylene was purchased from Beijing Accelerator II.
The compatilizer is PE-g-MAH. The grafting ratio of the PE-g-MAH is 1-1.4%, and the compatilizer is purchased from Nanjing Jietansi New Material Co.
The coupling agent is vinyl triethoxysilane (CAS number: 78-08-0).
The lubricant is ethylene bis stearamide.
The filler is silicate. The specific surface area of the silicate filler is 330-380m2The filler is Portland cement, and the filler is purchased from Gansu Kelianshan cement group GmbH and has a brand number of P.O52.5.
A preparation method of an impact-resistant building material comprises the following steps: drying natural fiber, stripping the fiber by a screw fiber stripper, then chopping and sieving, uniformly mixing the natural fiber, plastic, compatilizer, lubricant, filler and glass fiber, and then molding by compression under the pressure of 10 MPa.
Example 2
The specific implementation mode of the impact-resistant building material is the same as that of example 1, except that the weight ratio of the rice straws, the bamboo fibers and the poplar fibers is 7: 5: 10.
example 3
The specific implementation mode of the impact-resistant building material is the same as that in example 1, except that the weight ratio of the water glass to the acrylic emulsion is 3: 1.
example 4
An impact-resistant building material is as defined in example 1, except that the compatibilizer is 4 parts.
Example 5
An impact resistant building material, according to the same embodiment as in example 1, except that the ultra high molecular weight polyethylene has a viscosity average molecular weight of 3.5 x 106. The ultra-high molecular weight polyethylene was purchased from Beijing Accelerator II.
Comparative example 1
The specific implementation mode of the impact-resistant building material is the same as that of example 1, except that the weight ratio of the rice straw, the bamboo fiber and the poplar fiber is 10: 4: 8.
comparative example 2
An impact-resistant building material, the specific embodiment is the same as example 1, except that the pretreating agent is an acrylic emulsion.
Comparative example 3
The specific implementation mode of the impact-resistant building material is the same as that in example 1, except that the pretreating agent is water glass.
Comparative example 4
An impact-resistant building material, the specific embodiment being the same as example 1, except that the compatibilizer is ABS-g-MAH.
Performance testing
1. And (3) testing tensile property: the tensile strength and elongation at break were tested with reference to GB/T1040-70, with a tensile speed of 50 mm/min.
2. And (3) testing the impact resistance: the test was carried out with reference to GB/T1043.1-2008.
3. And (3) testing the water resistance: the sheets prepared in examples and comparative examples were immersed in boiling water at 100 ℃ for 12 hours, dried, and tested for the mass loss rate of (mass before immersion-mass after immersion)/mass before immersion) x 100%.
Table 1 results of performance testing
While the invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.
Claims (10)
1. An impact-resistant building material is characterized in that the raw materials comprise, by weight, 15-45 parts of natural fibers, 15-50 parts of plastics, 0.5-4 parts of a compatilizer and 10-25 parts of water.
2. The impact-resistant building material of claim 1, wherein the natural fibers comprise one or more of corn stover, cotton stover, wheat straw, rice straw, bamboo fibers, poplar fibers, birch fibers, and larch fibers.
3. The impact-resistant building material of claim 2, wherein the rice straw is pretreated rice straw, and the weight ratio of the pretreating agent to the rice straw in the pretreatment process is (3-8): (1-2).
4. An impact-resistant building material according to claim 1, wherein said plastic comprises one or more of PU, ABS, PP, PVC, PE.
5. The impact-resistant building material of claim 1, wherein the compatibilizer comprises at least one of a maleic anhydride grafted compatibilizer, and an acrylic copolymer compatibilizer.
6. The impact-resistant building material of claim 5, wherein the maleic anhydride grafted compatibilizer comprises one or more of ABS-g-MAH, PE-g-MAH, PP-g-MAH, SMA, SAN-g-MAH, EVA-g-MAH.
7. The impact-resistant building material of claim 1, wherein the raw materials further comprise 0.5-1.5 parts of a coupling agent, 0.5-1 part of a lubricant, 5-10 parts of a filler, and 15-25 parts of glass fiber.
8. The impact-resistant building material of claim 7, wherein the coupling agent comprises at least one of a titanate coupling agent and a silane coupling agent.
9. The impact-resistant building material of claim 7, wherein the filler comprises at least one of silicates and calcium carbonates.
10. A method for preparing an impact-resistant building material according to any one of claims 7 to 9, comprising the steps of: drying natural fiber, stripping fiber with screw fiber stripper, chopping, sieving, mixing natural fiber, plastic, compatilizer, lubricant, filler and glass fiber, and molding under 8-15 MPa.
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