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High-performance structural material and preparation method thereof

A structural material and high-performance technology, applied in the manufacture of tools, wood processing appliances, etc., can solve the problems of reducing the mechanical properties of wood, and achieve the effect of excellent mechanical properties, outstanding comprehensive performance, and large operating flexibility

Active Publication Date: 2019-01-04
北京英华高科技环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in natural wood, there are often a large amount of amorphous hemicellulose and lignin distributed around cellulose crystals. These hemicellulose and lignin are essential for wood growth, but their presence will affect the growth of cellulose. have a significant impact on the formation of hydrogen bonds, thereby reducing the mechanical properties of wood

Method used

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  • High-performance structural material and preparation method thereof
  • High-performance structural material and preparation method thereof
  • High-performance structural material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This example provides a method for preparing high-performance structural materials from Korean pine (place of origin: Daxinganling, tree age: 5 years). Table 1 shows the raw material composition analysis table of Korean pine.

[0044] Table 1-The raw material composition analysis table of Korean pine

[0045] composition name

α-cellulose

Hemicellulose

lignin

Benzyl Alcohol Extract

Silicon content

Ash

content(%)

45

17

24

4.8

0.3

1.6

[0046] The fiber size measurement table of Korean pine is shown in Table 2.

[0047] Table 2 - Fiber Size Measurement Chart for Korean Pine

[0048]

[0049] The specific steps for preparing high-performance structural materials with Korean pine as raw materials are as follows:

[0050] (1) The cellulose in Korean pine (20cm×5cm×5cm) is firstly purified by alkali treatment, and then subjected to secondary purification to obtain purified lignin content<15% and hemicellulose ...

Embodiment 2

[0057] This example provides a method for preparing a high-performance structural material using elm (place of origin: North China, tree age: 7 years) as a raw material. Table 3 shows the raw material composition analysis table of elm.

[0058] Table 3-The raw material composition analysis table of elm

[0059] composition name

α-cellulose

Hemicellulose

lignin

Benzyl Alcohol Extract

Silicon content

Ash

content(%)

49

12

29

3.7

0.5

1.2

[0060] The fiber size measurement table of elm is shown in Table 4.

[0061] Table 4 - Fiber Size Measurement Chart for Elm Wood

[0062]

[0063] The specific steps for preparing high-performance structural materials from elm wood are as follows:

[0064] (1) The cellulose in elm wood (20cm × 5cm × 5cm) is firstly purified by solvent method, and then subjected to secondary purification to obtain purified lignin content < 15% and hemicellulose content < 8%. wood; the specific o...

Embodiment 3

[0071] This example provides a method for preparing high-performance structural materials from natural poplar (place of origin: North China, tree age: 5 years). Table 5 shows the raw material composition analysis table of poplar.

[0072] Table 5-The raw material composition analysis table of poplar

[0073] composition name

α-cellulose

Hemicellulose

lignin

Benzyl Alcohol Extract

Silicon content

Ash

content(%)

51

15

24

2.7

0.3

0.7

[0074] The fiber size measurement table of poplar is shown in Table 6.

[0075] Table 6 - Fiber Size Measurement Chart for Poplar

[0076]

[0077] The specific steps for preparing high-performance structural materials from poplar are as follows:

[0078] (1) Carry out a purification process to the cellulose in poplar (20cm * 5cm * 5cm) by high temperature hydrothermal method, obtain the wood after the purification of lignin content<15%, hemicellulose content<8%; Carry out describe...

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Abstract

The invention relates to a high-performance structural material and a preparation method thereof. The preparation method comprises the steps that purifying treatment is conducted on cellulose in natural timber, purified timber is obtained, the purified timber is boiled and then washed, the washed timber is obtained and then subjected to activation treatment, the activated timber is subjected to hot pressing treatment, and then the high-performance structural material is obtained. According to the method, a large quantity of hydrogen bonds are constructed among cellulose molecules and constructed among a cellulose single molecule layer, a supermolecule layer and a fibrillar structure layer by taking the cellulose of the natural timber as a structural framework according to the molecular structural features of the cellulose and the self-assembly and crystallinity characteristics of the cellulose through chemical and physical means, a stable and compact three-dimensional structure systemis formed through the hydrogen bonds and Van der Waals force, and therefore the prepared high-performance structural material shows the excellent mechanical properties from the macroscopic angle and is outstanding in comprehensive performance and wide in market prospect.

Description

technical field [0001] The invention belongs to the technical field of structural materials, and in particular relates to a high-performance structural material and a preparation method thereof. Background technique [0002] Structural materials are materials used to manufacture stressed components based on mechanical properties. Compared with functional materials, structural materials are the most widely used basic materials in aerospace, transportation, construction and other industries. High-performance structural materials are emerging materials developed under the promotion of high technology. They refer to a special class of structural materials with high specific strength, high specific stiffness, high temperature resistance, corrosion resistance and wear resistance, including various alloy materials, Molecular polymer materials, ceramic materials and other composite materials, etc. The preparation process of high-performance structural materials is usually relative...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27M1/08
CPCB27M1/08
Inventor 冯拥军张毅韩瑛
Owner 北京英华高科技环保有限公司
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