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Heat-resistant wood composite preparation method

A composite material and wood technology, which is applied in the field of preparation of heat-resistant wood composite materials, can solve the problems of poor heat resistance and poor mechanical properties of natural materials, and achieve the effect of good heat resistance and good mechanical properties

Inactive Publication Date: 2018-09-28
苏州凌科特新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wood and bamboo have the characteristics of renewable recycling, low energy consumption and green processing, carbon sequestration and emission reduction, sound absorption and shock absorption, and environmental friendliness. They are regarded as natural ecological environment materials, but natural materials have poor mechanical properties and poor heat resistance. bad

Method used

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  • Heat-resistant wood composite preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of a heat-resistant wood composite material, the components are calculated by weight, comprising the following steps:

[0021] (1) A mixture of 35 parts of glycidyl methacrylate and polyethylene glycol (200) dimethacrylate, 0.3 parts of azobisisobutyronitrile and 7 parts of γ-(methacryloyloxy)-propane Trimethoxysilane was mixed, heated to 70°C, kept for 50min, and cooled to room temperature to obtain mixture A;

[0022] (2) Mix 10 parts of ethyl tetrasilicate, 20 parts of absolute ethanol and 20 parts of deionized water into a beaker, adjust the pH to 3.5 with 38% hydrochloric acid, heat to 45°C, and keep stirring for 3 hours;

[0023] (3) Add 10 parts of tetrahydrofuran to obtain sol B;

[0024] (4) Dissolve 2 parts of maleic anhydride in 2 parts of acetone, add mixture A and sol B, and stir vigorously for 20 minutes to obtain mixture C;

[0025] (5) Under vacuum-pressurized conditions, inject the mixed solution C into Pinus massoniana under 0.8M...

Embodiment 2

[0028] A preparation method of a heat-resistant wood composite material, the components are calculated by weight, comprising the following steps:

[0029] (1) A mixture of 40 parts of glycidyl methacrylate and polyethylene glycol (200) dimethacrylate, 0.4 parts of azobisisobutyronitrile and 8 parts of γ-(methacryloyloxy)-propane Trimethoxysilane was mixed, heated to 70°C, kept for 55min, and cooled to room temperature to obtain mixture A;

[0030] (2) Mix 12 parts of ethyl orthosilicate, 25 parts of absolute ethanol and 25 parts of deionized water into a beaker, adjust the pH to 3.5 with 38% hydrochloric acid, heat to 45°C, and keep stirring for 3 hours;

[0031] (3) Add 15 parts of tetrahydrofuran to obtain sol B;

[0032] (4) Dissolve 3 parts of maleic anhydride in 3 parts of acetone, add mixture A and sol B, and stir vigorously for 25 minutes to obtain mixture C;

[0033] (5) Inject the mixed liquid C into the red pine under 0.8MPa for 10 minutes under vacuum-pressure con...

Embodiment 3

[0036] A preparation method of a heat-resistant wood composite material, the components are calculated by weight, comprising the following steps:

[0037] (1) A mixture of 45 parts of glycidyl methacrylate and polyethylene glycol (200) dimethacrylate, 0.4 parts of azobisisobutyronitrile and 9 parts of γ-(methacryloyloxy)-propane Trimethoxysilane was mixed, heated to 70°C, kept for 55min, and cooled to room temperature to obtain mixture A;

[0038] (2) Mix 13 parts of ethyl orthosilicate, 25 parts of absolute ethanol and 25 parts of deionized water into a beaker, adjust the pH to 3.5 with 38% hydrochloric acid, heat to 45°C, and keep stirring for 3.5 hours;

[0039] (3) Add 15 parts of tetrahydrofuran to obtain sol B;

[0040] (4) Dissolve 4 parts of maleic anhydride in 4 parts of acetone, add mixture A and sol B, stir vigorously for 25 minutes to obtain mixture C;

[0041] (5) Inject the mixture C into birch wood under 0.8MPa for 10 minutes under vacuum-pressurization condit...

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Abstract

The invention provides a heat-resistant wood composite preparation method. The heat-resistant wood composite preparation method comprises the following steps of mixing and heating a mixture of glycidyl methacrylate and polyethyleneglycol (200) dimethacrylate, 2, 2'-azobis (2-methylpropionitrile) and gamma-methylacryloyl-propyltrimethoxysilane, so that a mixture A is obtained; mixing tetraethoxysilane, absolute ethyl alcohol and deionized water, adjusting pH, and conducting heating and stirring; adding tetrahydrofuran, so that sol B is obtained; dissolving maleic anhydride into acetone, addingthe mixture A and the sol B, and conducting stirring, so that mixed liquor C is obtained; injecting the mixed liquor C into wood or bamboo under a certain vacuum-pressurized condition, wrapping the wood or bamboo with tin foamed foil, and then stocking the wood or bamboo; and conducting heating for 48 hours at the temperature of 50 DEG C, conducting heating for 24 hours at the temperature of 70 DEG C, and conducting heating for 24 hours at the temperature of 110 DEG C, so that a heat-resistant wood composite is obtained. The composite prepared through the method is good in heat resistance andmeanwhile is quite good in mechanical property; and the heat resistance and mechanical property are improved by multiple times compared with those of original wood.

Description

technical field [0001] The invention relates to a preparation method of a heat-resistant wood composite material. Background technique [0002] With the rapid development of social economy and the depletion of non-renewable resources such as oil and natural gas, people's demand for resources is increasing day by day; The environment poses a serious threat, and people's awareness of environmental protection is also increasing. Under the dual pressure of energy and environment, how to efficiently develop and utilize renewable, widely sourced, and abundant green and environmentally friendly biomass resources to replace non-renewable resources and meet the needs of the rapid development of human society has gradually gained broad consensus and consensus. attention from all over the world. Among the abundant biomass resources, wood is the largest category. Wood and bamboo have the characteristics of renewable recycling, low energy consumption and green processing, carbon seque...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/10B27K3/50C08F283/06C08F220/32C08F230/08C08F285/00C08F222/06
CPCB27K3/105B27K3/50B27K2240/60C08F283/065C08F285/00C08L2201/08C08F222/06C08F220/325C08F230/08
Inventor 王鹤明
Owner 苏州凌科特新材料有限公司