High-temperature-resistant polyethylene wood plywood and preparation method thereof

A technology of high temperature resistant polyethylene and wood plywood, applied in the field of wood plastic composite materials, can solve the problems of low tensile strength and impact strength of wood plastic board, small interface bonding force, poor thermal conductivity, etc., to improve mechanical strength and hardness , Strong compatibility, the effect of improving mechanical strength and toughness

Inactive Publication Date: 2020-12-29
TAOJIANG HONGSEN WOOD IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the interfacial bonding force between the corn straw fiber of the invention and the high-density polyethylene is very small, resulting in low tensile strength and impact strength of the wood-plastic board, flammability, poor thermal conductivity, etc.

Method used

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  • High-temperature-resistant polyethylene wood plywood and preparation method thereof
  • High-temperature-resistant polyethylene wood plywood and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A high-temperature-resistant polyethylene wood plywood, which is composed of the following raw materials in parts by weight: 25 parts of modified polyethylene resin, 40 parts of eucalyptus wood powder, 20 parts of recycled bamboo plastic powder, 5 parts of polyethylene wax, aluminate 0.8 parts of joint agent, 5 parts of aluminum nitride powder, 3 parts of organic bentonite, 0.6 parts of triphenyl phosphite and 0.6 parts of n-pentane. The preparation method of the high temperature resistant polyethylene wood plywood comprises the following specific steps:

[0032] S1. Add 120-mesh aluminum nitride powder, aluminate coupling agent and 50 parts of xylene into the reaction kettle, stir at 100°C for 4-6 hours, filter, wash twice with ethanol solution, and dry to prepare Obtain surface-modified aluminum nitride;

[0033] S2. Add 100-mesh eucalyptus powder into 75% ethanol solution, soak at 50°C for 4 hours, add the above-mentioned surface-modified aluminum nitride, stir for ...

Embodiment 2

[0040] A high-temperature-resistant polyethylene wood plywood, which is composed of the following raw materials in parts by weight: 40 parts of modified polyethylene resin, 30 parts of eucalyptus wood powder, 10 parts of recycled bamboo plastic powder, 3 parts of polyethylene wax, aluminate 1.5 parts of joint agent, 10 parts of aluminum nitride powder, 4 parts of organic bentonite, 0.3 parts of acid lauryl phosphite and 1.2 parts of n-hexane. The preparation method of the high temperature-resistant polyethylene wood plywood is the same as that in Example 1, the only difference is that the amount of xylene added in the S1 step is 80 parts.

[0041] The preparation method of above-mentioned modified polyethylene comprises the following steps:

[0042] (1) Add 50 parts of LLDPE and 150 parts of anisole into the reaction kettle, heat to 70-80°C, stir for 0.5h, then add 0.25 parts of BPO and 2.5 parts of tricresyl phosphate, and slowly heat up to Stir at 100°C for 2-3 hours to obt...

Embodiment 3

[0047] A high-temperature-resistant polyethylene wood plywood, which is composed of the following raw materials in parts by weight: 30 parts of modified polyethylene resin, 35 parts of eucalyptus wood powder, 15 parts of recycled bamboo plastic powder, 4 parts of polyethylene wax, aluminate 1 part of joint agent, 8 parts of aluminum nitride powder, 5 parts of organic bentonite, 0.5 part of acid lauryl phosphite and 1.5 parts of petroleum ether. The preparation method of the high-temperature-resistant polyethylene wood plywood is the same as that in Example 1, the only difference is that the amount of xylene added in the S1 step is 72 parts.

[0048] The preparation method of above-mentioned modified polyethylene comprises the following steps:

[0049] (1) Add 50 parts of LLDPE and 120 parts of anisole into the reaction kettle, heat to 70-80°C, stir for 0.5h, then add 0.25 parts of BPO and 1.5 parts of tricresyl phosphate, and slowly heat up to Stir at 100°C for 2-3 hours to o...

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Abstract

The invention discloses a high-temperature-resistant polyethylene wood plywood and a preparation method thereof, and relates to the technical field of wood-plastic composite materials. The high-temperature-resistant polyethylene wood plywood is prepared from the following raw materials in parts by mass: 25-40 parts of modified polyethylene resin, 30-40 parts of eucalyptus powder, 10-20 parts of recycled bamboo-plastic powder, 3-5 parts of polyethylene wax, 0.8-1.5 parts of an aluminate coupling agent, 5-10 parts of aluminum nitride powder, 3-5 parts of organic bentonite, 0.3-0.6 part of an antioxidant and 0.5-1.5 parts of a foaming agent. The invention further discloses a preparation method of the high-temperature-resistant polyethylene wood plywood. The high-temperature-resistant polyethylene wood plywood provided by the invention can be normally used at -40 to 85 DEG C, and the modified polyethylene resin, the eucalyptus powder and the aluminum nitride powder in the wood plywood havegood compatibility, so that the wood plywood has high strength, high toughness and low possibility of brittle failure, and the service life is prolonged; and excellent flame retardance, waterproofness and thermal stability are also achieved.

Description

technical field [0001] The invention belongs to the technical field of wood-plastic composite materials, and in particular relates to a high-temperature-resistant polyethylene wood plywood and a preparation method thereof. Background technique [0002] Wood plywood, also known as wood-plastic board, is a wood fiber-polymer composite material. It is a kind of unfilled reinforcement material made of wood fiber materials such as wood, bamboo, and crop straw. Composite materials prepared by extrusion, injection molding or molding processes have both the properties and characteristics of wood and plastics, and are new composite materials that can replace wood and plastics. As a new type of material, wood-plastic composite material has developed rapidly in its industrial scale and application fields in recent years, and the research on this material has become more and more in-depth. In recent years, driven by the encouragement of the national circular economy policy and the pote...

Claims

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Application Information

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IPC IPC(8): C08L23/32C08L77/06C08L97/02C08L23/06C08K13/06C08K9/04C08K3/34C08K3/28C08K5/5425C08K5/09C08J9/14C08F8/40C08F210/16
CPCC08F8/40C08J9/0061C08J9/009C08J9/0095C08J9/141C08J9/142C08J9/147C08J2203/12C08J2203/14C08J2203/144C08J2323/32C08J2423/06C08J2477/06C08J2497/02C08F210/16
Inventor 李泽云
Owner TAOJIANG HONGSEN WOOD IND
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