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Preparation method of wood fiber powder

A technology for lignocellulose powder and lignocellulose, which is applied in the field of preparation of lignocellulose powder, can solve the problems of easy cracking of boards, poor physical and chemical properties of bonding, and poor anti-ultraviolet ability, so as to save resources, improve bonding performance, and increase bonding sexual effect

Inactive Publication Date: 2018-12-07
江苏金玉丰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the excellent physical and chemical properties of wood fiber, the application of wood fiber has been reported successively in patent documents and papers in the field of building materials, such as Chinese patent number: CN201110328903.9, which discloses a "wood fiber board and its manufacturing method", through which The technical solution reported in the patent literature has successfully obtained a wood fiber board whose main component is wood fiber. However, the wood fiber board reported in the patent literature is not resistant to aging, has poor UV resistance, is prone to cracks, and has poor physical and chemical properties.
In view of the deficiencies of existing technologies, there is no effective way to solve the problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of lignocellulosic powder, comprising the following steps: placing 100 parts of lignocellulosic particles in a reactor for appropriate dispersion to obtain a dispersed product, and adding 1 part of a coupling agent to the dispersed product after heating up to 110°C, and keeping the temperature After stirring for 35-40min and cooling down to 95°C, add 2 parts of stabilizer, 20 parts of filler, 4 parts of reinforcing fiber, 0.2 part of whitening agent, and 0.2 part of anti-ultraviolet agent into the reactor, and continue stirring for 15 minutes. Add 15 parts of polyethylene wax into the reactor and continue to stir for 2 hours to obtain lignocellulosic powder. During the reaction, the rotating speed of the stirring device in the stirrer is controlled to be 950 r / min.

[0025] Wherein, the coupling agent is a silane coupling agent; the reinforcing fiber is a ceramic fiber; the stabilizer is isooctyl dimercaptoacetate; the whitening agent is 2,5-bis(5-te...

Embodiment 2

[0029] A method for preparing lignocellulosic powder, comprising the following steps: placing 200 parts of lignocellulosic particles in a reactor for appropriate dispersion to obtain a dispersed product, and then adding 2 parts of a coupling agent to the dispersed product after heating up to 125°C, and keeping the temperature After stirring for 40 minutes and cooling down to 95°C, add 1 part of stabilizer, 1 part of filler, 4 parts of reinforcing fiber, 0.4 part of whitening agent, and 0.4 part of anti-ultraviolet agent into the reactor, and continue stirring for 15 minutes. Add 10-15 parts of wax into the reactor and continue to stir for 1.5 hours to obtain lignocellulosic powder. During the reaction, the rotation speed of the stirring device in the stirrer is controlled to be 800 r / min.

[0030] Wherein, the coupling agent is a silane coupling agent; the reinforcing fiber is a ceramic fiber; the stabilizer is isooctyl dimercaptoacetate; the whitening agent is 2,5-bis(5-tert-b...

Embodiment 3

[0033] A preparation method of lignocellulosic powder, comprising the following steps: placing 120 parts of lignocellulosic particles in a reactor for moderate dispersion to obtain a dispersed product, and adding 1-2 parts of a coupling agent to the dispersed product after the temperature is raised to 115°C , After heat preservation and stirring for 38 minutes, after cooling down to 102°C, add 1.5 parts of stabilizer, 18 parts of filler, 2.5 parts of reinforcing fiber, 0.3 part of whitening agent, and 0.3 part of anti-ultraviolet agent into the reactor, and continue stirring for 18 minutes. Add 12 parts of polyethylene wax into the reactor and continue to stir for 1.6 hours to obtain wood fiber powder. During the reaction, the rotation speed of the stirring device in the stirrer is controlled to be 850 r / min.

[0034] Wherein, the coupling agent is a silane coupling agent; the reinforcing fiber is a ceramic fiber; the stabilizer is isooctyl dimercaptoacetate; the whitening agen...

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PUM

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Abstract

The invention relates to a preparation method of wood fiber powder. The method comprises the following steps: placing wood fiber grains into a reactor for appropriate dispersion to obtain a dispersedproduct, heating the product to 110-125 DEG C, adding a coupling agent into the dispersed product, stirring for 34-40 min at the temperature, cooling to 95-105 DEG C, adding a stabilizer, a filler, areinforcing fiber, a whitening agent and an anti-UV agent to the reactor, further stirring for 15-20 min, adding polyethylene wax to the reactor and further stirring to obtain the wood fiber powder. By adopting the preparation method of the wood fiber powder, the wood fiber particles, which are building material waste (the main component of the wood fiber particles is the sawdust residue producedby wood and the shred residue after crop straw is crushed), are successfully cycled, which not only achieves resource conservation, but also can effectively reduce the cost of building construction.

Description

technical field [0001] The invention relates to the preparation of wood fiber powder, in particular to a preparation method of wood fiber powder. Background technique [0002] Wood fiber (xylem fiber) is an organic flocculent fiber substance obtained from natural renewable wood through chemical treatment and mechanical processing. It is widely used in concrete mortar, gypsum products, wood pulp sponge, asphalt roads and other fields. It can be used in the manufacture of MDF for the home building materials industry. [0003] Lignocellulose is insoluble in water, weak acid and alkaline solution; neutral pH value can improve the corrosion resistance of the system, lignocellulose has small specific gravity and large specific surface area, and has excellent thermal insulation, heat insulation, sound insulation, insulation and air permeability , uniform thermal expansion, no shell and no cracking; higher wet film strength and covering effect. Lignocellulose has excellent flexibi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L23/06C08K7/04C08K5/54C08K3/22C08K13/04C08K3/34
CPCC08K2003/2241C08L97/02C08L23/06C08K7/04C08K5/54C08K3/22C08K13/04C08K3/346
Inventor 庞振虎
Owner 江苏金玉丰新材料有限公司