CN114685895A - Flame-retardant aging-resistant wood-plastic composite material and preparation method thereof - Google Patents
Flame-retardant aging-resistant wood-plastic composite material and preparation method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 69
- 239000003063 flame retardant Substances 0.000 title claims abstract description 48
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- 229920001587 Wood-plastic composite Polymers 0.000 title claims abstract description 42
- 239000011155 wood-plastic composite Substances 0.000 title claims abstract description 42
- 230000032683 aging Effects 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title abstract description 17
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- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 17
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- 239000000835 fiber Substances 0.000 claims abstract description 15
- 239000005060 rubber Substances 0.000 claims abstract description 15
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- 239000012962 antiaging additive Substances 0.000 claims abstract description 13
- 239000002699 waste material Substances 0.000 claims description 48
- 241000196324 Embryophyta Species 0.000 claims description 14
- 239000002131 composite material Substances 0.000 claims description 13
- 229910044991 metal oxide Inorganic materials 0.000 claims description 13
- 150000004706 metal oxides Chemical class 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 11
- 239000010881 fly ash Substances 0.000 claims description 9
- -1 polyethylene Polymers 0.000 claims description 9
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 8
- 229920002379 silicone rubber Polymers 0.000 claims description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 7
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 7
- 239000011425 bamboo Substances 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 7
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 239000010903 husk Substances 0.000 claims description 6
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- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 3
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- 240000007594 Oryza sativa Species 0.000 claims description 3
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 241000353135 Psenopsis anomala Species 0.000 claims description 3
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
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- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 3
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 3
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- DPDORTBBLUCNJG-UHFFFAOYSA-N calcium tin Chemical compound [Ca].[Sn] DPDORTBBLUCNJG-UHFFFAOYSA-N 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 3
- 239000000347 magnesium hydroxide Substances 0.000 claims description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 3
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 3
- 229910052625 palygorskite Inorganic materials 0.000 claims description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920006324 polyoxymethylene Polymers 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 3
- 239000010902 straw Substances 0.000 claims description 3
- 229920006259 thermoplastic polyimide Polymers 0.000 claims description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 3
- 239000010455 vermiculite Substances 0.000 claims description 3
- 229910052902 vermiculite Inorganic materials 0.000 claims description 3
- 235000019354 vermiculite Nutrition 0.000 claims description 3
- 244000082204 Phyllostachys viridis Species 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 230000009977 dual effect Effects 0.000 abstract 1
- 229910052736 halogen Inorganic materials 0.000 abstract 1
- 150000002367 halogens Chemical class 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
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- 238000010438 heat treatment Methods 0.000 description 5
- 238000000875 high-speed ball milling Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000003712 anti-aging effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- QQGBVIOGKCIRPK-UHFFFAOYSA-N B.[Si] Chemical compound B.[Si] QQGBVIOGKCIRPK-UHFFFAOYSA-N 0.000 description 1
- CFOAUMXQOCBWNJ-UHFFFAOYSA-N [B].[Si] Chemical compound [B].[Si] CFOAUMXQOCBWNJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
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- 238000011056 performance test Methods 0.000 description 1
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- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to the technical field of wood-plastic composite materials, and discloses a flame-retardant aging-resistant wood-plastic composite material and a preparation method thereof. The flame-retardant aging-resistant wood-plastic composite material disclosed by the invention is composed of the following raw materials in parts by mass: 20-60 parts of thermoplastic plastic, 5-20 parts of epoxy resin, 2-10 parts of rubber, 10-20 parts of polymethyl methacrylate, 20-60 parts of plant fiber, 5-40 parts of flame retardant, 5-20 parts of reinforcing agent, 3-8 parts of coupling agent and 2-15 parts of anti-aging additive. The flame-retardant aging-resistant wood-plastic composite material has the dual effects of aging resistance and flame retardance, and is low in cost, simple and convenient to operate, short in processing time, free of halogen, harmless to the environment and human bodies, and suitable for industrial production.
Description
Technical Field
The invention relates to the technical field of wood-plastic composite materials, in particular to a flame-retardant aging-resistant wood-plastic composite material and a preparation method thereof.
Background
The wood-plastic composite material is a novel green environment-friendly material capable of replacing wood, and is widely applied to the fields of building, decoration, packaging and the like. The cost can be reduced and the natural environment can be protected by recycling the waste plastics, but the wood-plastic composite material also has some defects, such as flammability and poor aging resistance, and the defects greatly limit the service life and the application field of the wood-plastic composite material. Therefore, the development of a wood-plastic composite material which has flame retardant property and can meet aging resistance is urgently needed.
The existing research considers that: the flame retardant property of the wood-plastic composite material can be improved by adding a flame retardant or grafting an organic group on thermoplastic resin, for example, patent CN101838456 discloses a preparation method of an organic silicon boron flame retardant wood-plastic composite material, which is characterized by having better flame retardant property, but the cost for preparing organic silicon borane is higher, and grafting treatment needs to be carried out on thermoplastic plastics. Patent CN 150062112A discloses an aging-resistant wood-plastic composite material and a preparation method thereof, and the produced wood-plastic composite material has the characteristics of recoverability and reproducibility, but has the defect of no good flame retardant property.
Therefore, how to disclose a flame-retardant aging-resistant wood-plastic composite material and a preparation method thereof, which can reduce the preparation cost of the wood-plastic composite material and ensure the excellent flame-retardant performance and aging resistance thereof is a difficult problem to be solved in the field.
Disclosure of Invention
In view of the above, the invention provides a flame-retardant aging-resistant wood-plastic composite material and a preparation method thereof, and solves the problem of high preparation cost of the wood-plastic composite material. Poor flame retardancy and aging resistance.
In order to achieve the purpose, the invention adopts the following technical scheme:
the flame-retardant anti-aging wood-plastic composite material comprises the following components in parts by mass: 20-60 parts of thermoplastic plastic, 5-20 parts of epoxy resin, 2-10 parts of rubber, 10-20 parts of polymethyl methacrylate, 20-60 parts of plant fiber, 5-40 parts of flame retardant, 5-20 parts of reinforcing agent, 3-8 parts of coupling agent and 2-15 parts of anti-aging additive.
Preferably, the thermoplastic plastic is one or more of waste polystyrene, waste polyvinyl chloride, waste polyethylene, waste polypropylene, waste ethylene-vinyl acetate copolymer, waste polyformaldehyde, waste thermoplastic polyurethane, waste polyamide and waste thermoplastic polyimide.
Preferably, the particle size of the epoxy resin is 100-500 meshes.
Preferably, the rubber is waste silicone rubber, and the particle size of the rubber is 200-300 meshes;
the molecular weight of the polymethyl methacrylate is 1000-2000.
Preferably, the plant fiber is one or more of wood powder, bamboo powder, straw, rice husk and melon seed husk, and the particle size of the plant fiber is 100-200 meshes.
Preferably, the flame retardant is one or more of carborane, aluminum hydroxide, magnesium hydroxide, silicon nitride, silicon boride, melamine, ammonium polyphosphate and graphene oxide.
Preferably, the reinforcing agent is one or more of white carbon black, palygorskite, vermiculite, kaolin, silicon carbide, glass beads, fly ash and calcium carbonate.
Preferably, the coupling agent is a silane coupling agent which is a mixture of KH560 and KH570, wherein the mass ratio of KH560 to KH570 is 1: 3-5.
Preferably, the anti-aging additive is one or more of a nano zinc-tin composite metal oxide, a nano zinc-calcium composite metal oxide and a nano calcium-tin composite metal oxide, and the particle size of the anti-aging additive is 100-200 nm.
The invention also discloses a preparation method of the flame-retardant aging-resistant wood-plastic composite material, which comprises the following steps:
1) mixing the plant fiber, the fire retardant, the reinforcing agent and the coupling agent for 15-30min at the rotation speed of 500-1000r/min to obtain a modified mixed material;
2) extruding and granulating the thermoplastic plastic, the epoxy resin, the rubber, the polymethyl methacrylate and the anti-aging additive at the temperature of 140-;
3) mixing the modified mixed material obtained in the step 1) and the material obtained in the step 2) at the temperature of 110-.
Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:
(1) the flame-retardant aging-resistant wood-plastic composite material is low in cost, simple and convenient to operate, has double effects of flame retardance and aging resistance, does not warp and deform after being placed outdoors for 12 months, and has an oxygen index as high as 38; the thermal deformation temperature can reach 167.9 ℃;
(2) is harmless to the environment and the human body;
(3) can be recycled, can be repeatedly processed and formed, has strong universality and wide application.
Detailed Description
The flame-retardant anti-aging wood-plastic composite material comprises the following components in parts by mass: 20-60 parts of thermoplastic plastic, 5-20 parts of epoxy resin, 2-10 parts of rubber, 10-20 parts of polymethyl methacrylate, 20-60 parts of plant fiber, 5-40 parts of flame retardant, 5-20 parts of reinforcing agent, 3-8 parts of coupling agent and 2-15 parts of anti-aging additive; preferably 30-50 parts of thermoplastic plastic, 10-18 parts of epoxy resin, 4-7 parts of rubber, 12-16 parts of polymethyl methacrylate, 30-50 parts of plant fiber, 10-430 parts of flame retardant, 8-15 parts of reinforcing agent, 5-7 parts of coupling agent and 5-12 parts of anti-aging additive; more preferably 40 parts of thermoplastic plastic, 15 parts of epoxy resin, 5 parts of rubber, 15 parts of polymethyl methacrylate, 45 parts of plant fiber, 20 parts of flame retardant, 12 parts of reinforcing agent, 6 parts of coupling agent and 10 parts of anti-aging additive.
In the invention, the thermoplastic plastic is one or more of waste polystyrene, waste polyvinyl chloride, waste polyethylene, waste polypropylene, waste ethylene-vinyl acetate copolymer, waste polyformaldehyde, waste thermoplastic polyurethane, waste polyamide and waste thermoplastic polyimide.
In the present invention, the melt flow rate of the thermoplastic is from 2 to 5g/10 min.
In the invention, the epoxy resin is waste epoxy resin, and the particle size of the waste epoxy resin is 100-500 meshes, preferably 200-400 meshes, and more preferably 300 meshes.
In the invention, the rubber is waste silicone rubber, and the particle size of the rubber is 200-300 meshes, preferably 220-260 meshes, and more preferably 250 meshes.
In the present invention, the polymethyl methacrylate has a molecular weight of 1000-.
In the invention, the plant fiber is one or more of wood powder, bamboo powder, straw, rice husk and melon seed husk, and the particle size of the plant fiber is 100-200 meshes, preferably 120-180 meshes, and more preferably 160 meshes.
In the invention, the flame retardant is one or more of carborane, aluminum hydroxide, magnesium hydroxide, silicon nitride, silicon boride, melamine, ammonium polyphosphate and graphene oxide, preferably the aluminum hydroxide and carborane in a mass ratio of 1:3-3:1, and more preferably the aluminum hydroxide and carborane in a mass ratio of 1: 1.
In the invention, the reinforcing agent is one or more of white carbon black, palygorskite, vermiculite, kaolin, silicon carbide, glass beads, fly ash and calcium carbonate.
In the invention, the coupling agent is a silane coupling agent which is a mixture of KH560 and KH570, wherein the mass ratio of KH560 to KH570 is 1: 3-5, preferably 1: 4.
in the invention, the anti-aging additive is one or more of nano zinc-tin composite metal oxide, nano zinc-calcium composite metal oxide and nano calcium-tin composite metal oxide, and the particle size of the anti-aging additive is 100-200nm, preferably 120-180nm, and more preferably 160 nm.
The invention also discloses a preparation method of the flame-retardant aging-resistant wood-plastic composite material, which comprises the following steps:
1) mixing the plant fiber, the flame retardant, the reinforcing agent and the coupling agent at the rotating speed of 500-; the rotation speed is preferably 600-800r/min, more preferably 700r/min, and the mixing time is preferably 18-26min, more preferably 20 min;
2) extruding and granulating the thermoplastic plastic, the epoxy resin, the rubber, the polymethyl methacrylate and the anti-aging additive at the temperature of 140-150 ℃, wherein the extrusion temperature is preferably 145 ℃;
3) mixing the modified mixed material obtained in the step 1) and the material obtained in the step 2) at the temperature of 110-170 ℃, preferably 130 ℃, and then extruding and molding at the temperature of 150-170 ℃, preferably 160 ℃ to obtain the flame-retardant and aging-resistant wood-plastic composite material.
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Preparation:
1) mixing bamboo powder and flame retardant carborane and aluminum hydroxide in a mass ratio of 1: adding the reinforcing agent which is fly ash and the coupling agent (the mass ratio of KH560 to KH570 is 1: 4) into a high-speed ball-milling mixer, and mixing for 30min at the rotating speed of 800r/min to obtain a modified mixed material.
2) Extruding and granulating the waste polypropylene plastic, the waste epoxy resin, the waste silicon rubber, the polymethyl methacrylate (with the molecular weight of 1500) and the nano zinc-tin composite metal oxide (with the molecular weight of 160nm) in a double-screw extruder at the temperature of 140 ℃.
3) Adding the modified mixed material obtained in the step 1 and the material prepared in the step 2 into a mixer, heating to 130 ℃, uniformly mixing, adding the mixed material into a double-screw extruder, and extruding and molding through a die at 170 ℃.
Example 2
Preparation:
1) wood powder, a flame retardant which is silicon nitride, a reinforcing agent which is fly ash, and a coupling agent (KH560 to KH570 in a mass ratio of 1: 3) and adding the mixture into a high-speed ball mill mixer, and mixing for 30min at the rotating speed of 500r/min to obtain a modified mixed material.
2) Waste polyvinyl chloride plastics, waste epoxy resin, waste silicon rubber, polymethyl methacrylate (molecular weight 1500) and nano zinc-tin composite metal oxide (100nm) are extruded and granulated in a double-screw extruder at the temperature of 140 ℃.
3) Adding the modified mixed material obtained in the step 1 and the material prepared in the step 2 into a mixer, heating to 130 ℃, uniformly mixing, adding the mixed material into a double-screw extruder, and extruding and molding through a die at 150 ℃.
Example 3
Preparation:
1) mixing bamboo powder and flame retardant carborane and aluminum hydroxide in a mass ratio of 1: adding the reinforcing agent which is fly ash and the coupling agent (the mass ratio of KH560 to KH570 is 1: 5) into a high-speed ball-milling mixer, and mixing for 15min at the rotating speed of 1000r/min to obtain a modified mixed material.
2) Extruding and granulating waste polyamide plastics, waste epoxy resin, waste silicon rubber, polymethyl methacrylate (with the molecular weight of 1500) and nano zinc-tin composite metal oxide (200nm) in a double-screw extruder at the temperature of 145 ℃.
3) Adding the modified mixed material obtained in the step 1 and the material prepared in the step 2 into a mixer, heating to 150 ℃, uniformly mixing, adding the mixed material into a double-screw extruder, and extruding and molding through a die at 170 ℃.
Example 4
Preparation:
1) bamboo powder, a reinforcing agent is fly ash, and a coupling agent (KH560 and KH570 in a mass ratio of 1: 4) and adding the mixture into a high-speed ball-milling mixer, and mixing for 30min at the rotating speed of 800r/min to obtain a modified mixed material.
2) Extruding and granulating waste polypropylene plastics, waste epoxy resin, waste silicon rubber, polymethyl methacrylate (with the molecular weight of 1500) and nano zinc-tin composite metal oxide (160nm) in a double-screw extruder at the temperature of 140 ℃.
3) Adding the modified mixed material obtained in the step 1 and the material prepared in the step 2 into a mixer, heating to 130 ℃, uniformly mixing, adding the mixed material into a double-screw extruder, and extruding and molding through a die at 170 ℃.
Example 5
Preparation:
1) mixing bamboo powder and flame retardant carborane and aluminum hydroxide in a mass ratio of 1: adding the reinforcing agent which is fly ash and the coupling agent (the mass ratio of KH560 to KH570 is 1: 4) into a high-speed ball-milling mixer, and mixing for 30min at the rotating speed of 800r/min to obtain a modified mixed material.
2) Extruding and granulating waste polypropylene plastics, waste epoxy resin, waste silicon rubber and polymethyl methacrylate (with the molecular weight of 1500) in a double-screw extruder at the temperature of 140 ℃.
3) Adding the modified mixed material obtained in the step 1 and the material prepared in the step 2 into a mixer, heating to 130 ℃, uniformly mixing, adding the mixed material into a double-screw extruder, and extruding and molding through a die at 170 ℃.
The properties of the wood-plastic composite materials prepared in examples 1 to 5 are shown in Table 1, and the bending strength is tested according to GB/T9341-2000 standard; the impact strength is tested according to the GB/T1043-93 standard; the oxygen index is determined according to GB 2046-93; the heat distortion temperature was measured according to GB/T1634-2004 standard.
TABLE 1 Wood-Plastic composite Performance test
As can be seen from Table 1, the wood-plastic composite material disclosed by the invention has higher bending strength and impact strength, and the wood-plastic composite material prepared by the invention has high oxygen index and thermal deformation temperature and good aging resistance. Meanwhile, the properties of the wood-plastic composite material prepared without adding the reinforcing agent and the fly ash additive are obviously insufficient from the examples 4 and 5.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The flame-retardant aging-resistant wood-plastic composite material is characterized by comprising the following components in parts by mass: 20-60 parts of thermoplastic plastic, 5-20 parts of epoxy resin, 2-10 parts of rubber, 10-20 parts of polymethyl methacrylate, 20-60 parts of plant fiber, 5-40 parts of flame retardant, 5-20 parts of reinforcing agent, 3-8 parts of coupling agent and 2-15 parts of anti-aging additive.
2. The flame-retardant aging-resistant wood-plastic composite material as claimed in claim 1, wherein the thermoplastic plastic is one or more of waste polystyrene, waste polyvinyl chloride, waste polyethylene, waste polypropylene, waste ethylene-vinyl acetate copolymer, waste polyformaldehyde, waste thermoplastic polyurethane, waste polyamide and waste thermoplastic polyimide.
3. The flame-retardant aging-resistant wood-plastic composite material as claimed in claim 1, wherein the particle size of the epoxy resin is 100-500 mesh.
4. The flame-retardant aging-resistant wood-plastic composite material as claimed in claim 1, wherein the rubber is waste silicone rubber, and the particle size of the rubber is 200-300 meshes;
the molecular weight of the polymethyl methacrylate is 1000-2000.
5. The flame-retardant aging-resistant wood-plastic composite material as claimed in claim 1, wherein the plant fiber is one or more of wood powder, bamboo powder, straw, rice husk and melon seed husk, and the particle size of the plant fiber is 100-200 meshes.
6. The flame-retardant aging-resistant wood-plastic composite material as claimed in claim 1, wherein the flame retardant is one or more of carborane, aluminum hydroxide, magnesium hydroxide, silicon nitride, silicon boride, melamine, ammonium polyphosphate and graphene oxide.
7. The flame-retardant aging-resistant wood-plastic composite material as claimed in claim 1, wherein the reinforcing agent is one or more of white carbon black, palygorskite, vermiculite, kaolin, silicon carbide, glass beads, fly ash and calcium carbonate.
8. The flame-retardant aging-resistant wood-plastic composite material as claimed in claim 1, wherein the coupling agent is a silane coupling agent which is a mixture of KH560 and KH570, wherein the mass ratio of KH560 to KH570 is 1: 3-5.
9. The flame-retardant aging-resistant wood-plastic composite material as claimed in claim 1, wherein the aging-resistant additive is one or more of nano zinc-tin composite metal oxide, nano zinc-calcium composite metal oxide and nano calcium-tin composite metal oxide, and the particle size of the aging-resistant additive is 100-200 nm.
10. The method for preparing a flame retardant aging resistant wood plastic composite material according to any one of claims 1 to 9, characterized by comprising the steps of:
1) mixing the plant fiber, the flame retardant, the reinforcing agent and the coupling agent at the rotating speed of 500-;
2) extruding and granulating thermoplastic plastics, epoxy resin, rubber, polymethyl methacrylate and an anti-aging additive at the temperature of 140-;
3) mixing the modified mixed material obtained in the step 1) and the material obtained in the step 2) at the temperature of 110-170 ℃, and then extruding and molding at the temperature of 150-170 ℃ to obtain the flame-retardant and aging-resistant wood-plastic composite material.
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