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A kind of wood ceramic material and preparation method thereof

A technology of wood ceramics and wood powder, applied in the field of wood ceramic materials and preparation, can solve problems such as waste of resources, and achieve the effect of improving the properties of density and wear resistance

Active Publication Date: 2021-04-13
广东华科新材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country's grain output ranks among the top in the world, and the annual output of straw is even more astonishing. In 2003, the output of agricultural straw was 612 million tons, but most of the straw was incinerated and not effectively utilized, resulting in a huge waste of resources.

Method used

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  • A kind of wood ceramic material and preparation method thereof
  • A kind of wood ceramic material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of preparation method of wood ceramic material as the embodiment of the present invention, described method comprises the following steps:

[0028] (1) Crush the castor stalks to more than 80 meshes, dry until the moisture content is lower than 5%, mix the phenol and the dried stalk powder at a weight ratio of 3:1, and add sulfuric acid with 8% weight of the castor stalk powder , and reacted at 170°C for 45 minutes to obtain a solid-liquid mixed system A;

[0029] (2) Filtrating the solid-liquid mixed system A described in step (1), washing the filter residue with ethanol, combining the liquid phases, and removing ethanol through distillation to obtain a mixed system B of liquefied straw and phenol;

[0030] (3) Mix the mixed system B, acetone, and sulfuric acid in step (2) with a weight ratio of 10:3:5 and stir for 2 hours to obtain the mixed system C;

[0031] (4) After mixing the mixed system C and epichlorohydrin at a weight ratio of 1:1.25, microwave treatm...

Embodiment 2

[0038] As a method for preparing a wood ceramic material according to an embodiment of the present invention, the only difference between this embodiment and Embodiment 1 is that the weight ratio of phenol to dried straw powder is 5:1.

Embodiment 3

[0040] As a method for preparing a wood-ceramic material according to an embodiment of the present invention, the only difference between this embodiment and Embodiment 1 is that the weight ratio of phenol to dried straw powder is 4:1.

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Abstract

The invention provides a wood ceramic material and a preparation method. The method uses phenol to liquefy the straw, reacts the liquefied mixture of the straw with acetone, and then epoxidizes it with epichlorohydrin to obtain a composite epoxy resin. Silicon carbide Fibers and wood powder above 80 meshes were impregnated in the obtained composite epoxy resin, ultrasonically impregnated for 40-60 minutes, added epoxy resin curing agent, and cured at 18-25MPa and 100-150°C to obtain a cured material; The wood-ceramic material is obtained after anaerobic carbonization of the solidified material at 500-800° C., and the wood-ceramic material of the present invention is improved in terms of strength, density and wear resistance.

Description

technical field [0001] The invention relates to the field of materials, in particular to a wood ceramic material and a preparation method. Background technique [0002] my country's grain output ranks among the top in the world, and the annual output of straw is even more astonishing. In 2003, the output of agricultural straw was 612 million tons. However, the straw is mostly incinerated instead of being effectively utilized, resulting in a huge waste of resources. The plant porous carbon material (wood ceramics) was first proposed in 1990. It is a porous material formed by firing a wood material impregnated with a thermosetting resin at a high temperature under anaerobic conditions. Its raw materials come from a wide range of sources. Fibrous materials such as waste paper, wood, and agricultural straw can be used to make wood ceramics. These raw materials are renewable, and the manufacturing process is environmentally friendly, and by-products can also be used. Contents o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/524C04B35/80C04B35/622
CPCC04B35/806C04B35/524C04B35/622C04B2235/5244C04B2235/656C04B2235/77C04B2235/96
Inventor 马耐球邓杰何捷娴吴盈华阳志坤
Owner 广东华科新材料研究院有限公司