Pressure-resistant and anti-cracking wood-plastic composite with high strength

A wood-plastic composite material and high-strength technology, which is applied in the field of high-strength pressure-resistant and crack-resistant wood-plastic composite materials, can solve the problems of poor toughness and bending performance of wood-plastic composite materials, the impact of composite material performance stability, and composite compatibility effects To achieve the effect of improving high temperature resistance and thermal stability, improving flame retardancy and self-extinguishing performance, and uniform properties

Inactive Publication Date: 2019-02-15
HEFEI WANZHIJING DOORS & WINDOWS CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since wood-plastic materials are mainly made of polymer materials such as polyethylene or polypropylene and wood powder through composite processing, and materials such as polyethylene and polypropylene are mainly composed of a main chain carbon-carbon polymer skeleton, the branch in the material There are fewer chains, so the composite compatibility with wood flour and other fillers is poor, which affects the performance stability of composite materials
In addition, due to the low strength of lignin fibers contained in wood powder in wood-plastic panels, the toughness and bending properties of wood-plastic composite materials are relatively poor, and there is room for improvement

Method used

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  • Pressure-resistant and anti-cracking wood-plastic composite with high strength

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A high-strength pressure-resistant and crack-resistant wood-plastic composite material. According to the mass parts, the components of the wood-plastic composite material include: 60 parts of polypropylene resin, 6 parts of polyolefin thermoplastic elastomer, 8 parts of compatibilizer, wood powder 55 parts, 12 parts of modified asbestos fiber, 6 parts of magnesium hydroxide, 3 parts of lubricant, 1 part of silane coupling agent, 1.5 parts of dibutyl phthalate, 1.8 parts of dibasic lead phosphite, 1 part of anti-aging agent share.

[0037] Among them, the wood powder is made of fir wood powder with a water content of less than 3%, and the wood powder is impregnated with a flame retardant solution under high pressure before use. The flame retardant solution is composed of silica sol, ammonium polyphosphate, sodium octaborate tetrahydrate and carbonic acid. It is prepared by adding water to aluminum.

[0038] The compatibilizer is maleic anhydride grafted polypropylene; t...

Embodiment 2

[0043] A high-strength pressure-resistant and crack-resistant wood-plastic composite material. According to the mass parts, the components of the wood-plastic composite material include: 70 parts of polypropylene resin, 9 parts of polyolefin thermoplastic elastomer, 10 parts of compatibilizer, wood powder 75 parts, 17 parts of modified asbestos fiber, 9 parts of magnesium hydroxide, 5 parts of lubricant, 3 parts of silane coupling agent, 2.5 parts of dibutyl phthalate, 2.3 parts of dibasic lead phosphite, 2 parts of anti-aging agent share.

[0044] Among them, the wood powder is made of pine wood powder with a water content of less than 3%, and the wood powder is impregnated with a flame retardant solution under high pressure before use. The flame retardant solution is composed of silica sol, ammonium polyphosphate, sodium octaborate tetrahydrate and carbonic acid It is prepared by adding water to aluminum.

[0045] The compatibilizer is maleic anhydride grafted polypropylene...

Embodiment 3

[0050] A high-strength pressure-resistant and crack-resistant wood-plastic composite material. According to the mass parts, the components of the wood-plastic composite material include: 66 parts of polypropylene resin, 7.5 parts of polyolefin thermoplastic elastomer, 9 parts of compatibilizer, wood powder 63 parts, 15 parts of modified asbestos fiber, 7.5 parts of magnesium hydroxide, 4 parts of lubricant, 2.2 parts of silane coupling agent, 2.1 parts of dibutyl phthalate, 2 parts of dibasic lead phosphite, 1.8 parts of anti-aging agent .

[0051] Among them, the wood powder is made of fir wood powder with a water content of less than 3%, and the wood powder is impregnated with a flame retardant solution under high pressure before use. The flame retardant solution is composed of silica sol, ammonium polyphosphate, sodium octaborate tetrahydrate and carbonic acid. It is prepared by adding water to aluminum.

[0052] The compatibilizer is maleic anhydride grafted polypropylene...

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Abstract

The invention relates to the technical field of polymer composites, in particular to a pressure-resistant and anti-cracking wood-plastic composite with high strength. The wood-plastic composite is prepared from the following components: polypropylene resin, a polyolefin thermoplastic elastomer, a compatilizer, wood flour, metamorphic asbestos fiber, magnesium hydroxide, a lubricant, a silane coupling agent, dibutyl phthalate, dibasic lead phosphite and an ageing resister, wherein the wood flour chooses fir powder or pine powder with water content lower than 3%, and is subjected to high-pressure impregnation with a flame retardant solution before use; the flame retardant solution is prepared from silica sol, ammonium polyphosphate, sodium octoborate tetrahydrate and aluminum carbonate by adding water; the compatilizer is maleic anhydride grafted polypropylene; the lubricant is polyethylene wax; the ageing resister contains an antioxidant and an ultraviolet light absorber in the same mass ratio. The wood-plastic composite has high strength, outstanding pressure resistance and cracking resistance and good heat stability, and is not prone to ageing or deformation.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to a high-strength pressure-resistant and crack-resistant wood-plastic composite material. Background technique [0002] Wood-plastic composite material is a new type of material, which is mainly made of polypropylene, polyethylene, polyvinyl chloride and other plastics, and is mixed with waste plant fibers such as wood powder, rice husk, straw, etc. Sheets or profiles produced by extrusion, molding, injection molding and other plastic processing techniques. This material is mainly used in building materials, furniture, logistics packaging and other industries; the board that is formed by hot extrusion after mixing plastic and wood powder in a certain proportion is called extruded wood-plastic composite board. [0003] Because wood-plastic composite materials mainly use wood and plastic as raw materials, they have the comprehensive characteristics of the two, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/02C08L97/02C08L51/06C08L23/06C08K13/04C08K7/12C08K3/22C08K5/12C08K3/32
CPCC08K2003/2224C08L23/12C08L2201/02C08L2201/08C08L2205/035C08L2205/08C08L2205/16C08L2207/04C08L23/02C08L97/02C08L51/06C08L23/06C08K13/04C08K7/12C08K3/22C08K5/12C08K3/32
Inventor 武娟
Owner HEFEI WANZHIJING DOORS & WINDOWS CO LTD
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