Homodisperse method for lignocellulose

A lignocellulosic, uniformly dispersed technology, applied in coatings and other directions, can solve the problems of reducing scratch resistance, affecting the deep cracking resistance of coatings, and insufficient dispersion, so as to achieve uniform thermal expansion, improve deep cracking resistance and scratch resistance Good wiping performance and dispersibility

Inactive Publication Date: 2016-12-14
广西伯麟合纵科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conventional production method of lignocellulose makes it not sufficiently dispersed, which affects the anti-deep cracking performance of the coating and reduces its scratch resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The present embodiment provides a method for evenly dispersing lignocellulose, comprising the following steps:

[0023] 1) The raw materials are pulverized, and the raw materials are pulverized into a coarse powder of 10-50 mesh;

[0024] 2) Alkali treatment, soaking the coarse powder in a sodium hydroxide solution with a mass concentration of 5%, at a temperature of 20° C., soaking for 1 hour, and filtering to obtain the filter material as treatment A;

[0025] 3) Microwave acid treatment, placing the treatment material A in hydrochloric acid with a mass concentration of 5%, 3% strongly acidic styrene-based cation exchange resin and 4% fluorosilicic acid solution, and then placing it in a microwave oven of 1000 watts and 2450MHz Do dry or wet microwave heat treatment in the Furnace, the temperature is between 100°C, the treatment time is 1h, and the filter material obtained by filtration is the treatment B;

[0026] 4) Polymerization treatment, mix the treated product...

Embodiment 2

[0029] The present embodiment provides a method for evenly dispersing lignocellulose, comprising the following steps:

[0030] 1) The raw materials are pulverized, and the raw materials are pulverized into a coarse powder of 10-50 mesh;

[0031] 2) Alkali treatment, soaking the coarse powder in a sodium hydroxide solution with a mass concentration of 10%, at a temperature of 100° C., soaking for 8 hours, and filtering to obtain the filter material as treatment A;

[0032] 3) Microwave acid treatment, place the treated product A in hydrochloric acid with a mass concentration of 10%, 6% strongly acidic styrene-based cation exchange resin and 4-7% fluorosilicic acid solution, and then place it in a 1000-watt, 2450MHz In the microwave muffle furnace, do dry or wet microwave heat treatment, the temperature is between 150 ° C, the treatment time is 5 hours, and the filter material obtained by filtration is the treatment product B;

[0033] 4) Polymerization treatment, mix the treat...

Embodiment 3

[0036] The present embodiment provides a method for evenly dispersing lignocellulose, comprising the following steps:

[0037] 1) The raw materials are pulverized, and the raw materials are pulverized into a coarse powder of 10-50 mesh;

[0038] 2) Alkali treatment, soaking the coarse powder in a sodium hydroxide solution with a mass concentration of 8%, at a temperature of 80° C., soaking for 1 to 8 hours, and filtering to obtain the filter material as treatment A;

[0039] 3) Microwave acid treatment, placing the treatment material A in hydrochloric acid with a mass concentration of 7%, 4% strongly acidic styrene-based cation exchange resin and 5% fluorosilicic acid solution, and then placing it in a microwave oven of 1000 watts and 2450MHz Do dry or wet microwave heat treatment in the Furnace, the temperature is between 120 ° C, the treatment time is 3 hours, and the filter material obtained by filtration is the treatment B;

[0040] 4) Polymerization treatment, mix treatm...

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PUM

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Abstract

The invention provides a homodisperse method for lignocellulose, and belongs to the field of chemical engineering. The method comprises the steps of raw material smashing, alkali treatment, microwave acid treatment, polymerization treatment and regrinding. According to the lignocellulose treated through the method, powder is embrittled through acid and alkali treatment, the microcellular structure is enlarged and subjected to a grafting reaction with a polymer, on the basis of the physical refining technology, the obtained lignocellulose is good in cellulose dispersibility, the fineness can reach 300-800 meshes, and the microhole structure can still be kept; the lignocellulose can be uniformly dispersed after being added into the coating, the coating has the good heat preservation, heat insulation, sound insulation, insulation and gas permeability, thermal expansion is uniform, no flaking is caused, and the deep layer cracking resistance and scratch resistance are improved.

Description

technical field [0001] The invention belongs to the field of chemical industry, in particular to a method for uniformly dispersing lignocellulose. Background technique [0002] Lignocellulose is an organic flocculent fibrous substance obtained from natural renewable wood through chemical treatment and mechanical processing. It is non-toxic, tasteless, non-polluting, and non-radioactive. Lignocellulose is insoluble in water, weak acid and sodium hydroxide solution; the pH value is neutral, which can improve the corrosion resistance of the system; its specific gravity is small, the specific surface area is large, and it has excellent thermal insulation, heat insulation, sound insulation, insulation and air permeability. Uniform thermal expansion without shelling or cracking; higher wet film strength and covering effect; excellent flexibility and dispersion, forming a three-dimensional network structure after mixing, which enhances the support and durability of the system, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/73C08G18/75C08G18/65C08G18/64C09D7/12
CPCC08G18/7671C08G18/6492C08G18/6511C08G18/73C08G18/758C08G18/7614
Inventor 谢裕梦
Owner 广西伯麟合纵科技有限公司
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