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Industry xylogen reinforced and filled coblended elastomer material, and preparation method thereof

A technology of industrial lignin and elastomer materials, applied in the field of blended elastomer materials filled with industrial lignin and its preparation, to achieve the effect of reducing manufacturing costs and low density

Active Publication Date: 2008-12-03
广西合山林格高分子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Using lignin as a modification method for reinforcing fillers of various elastomers, except for the preparation of lignin-formaldehyde resin disclosed in the invention patent No. 89109494.6, there are no relevant literature reports on other different technical solutions

Method used

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  • Industry xylogen reinforced and filled coblended elastomer material, and preparation method thereof
  • Industry xylogen reinforced and filled coblended elastomer material, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Unmodified Lignin Reinforced Blended Elastomer Materials Filled with SBR

[0036] Pass the straw pulp thick black liquor (specific gravity > 22Be°) into the purified flue gas (carbon dioxide) when the alkali recovery furnace is emptied, add acid after supplementing, and precipitate unmodified lignin, wash to PH=5.5-6.5, and dry .

[0037] According to the ratio of unmodified lignin: styrene-butadiene rubber=167:100 (parts by weight), knead with styrene-butadiene rubber in a 270L internal mixer, adopt high-pressure, high-speed, high-temperature mixing method: the top bolt pressure on the internal mixer is greater than or equal to 0.8 Mpa, the rotor speed of the internal mixer is greater than 40rpm, and the debinding temperature is greater than 140°C. When the unmodified lignin changes from a phenolic structure-based spatial structure to a more conjugated carbonyl and quinone structure, the discharge The glue is released into a sheet to obtain a blended elastomer materia...

Embodiment 2

[0048] Unmodified Lignin Reinforced Blended Elastomer Materials Filled with NBR

[0049] After acid is added to semi-concentrated black liquor (specific gravity ≤ 20-22Be°) mixed with bamboo pulp and pine wood pulp, unmodified lignin is precipitated, washed to PH=5.5-6.5, and dried.

[0050] According to the ratio of lignin: nitrile rubber: hexamethylenetetramine=100: 100: 2 (parts by weight), knead with nitrile rubber in a 50L internal mixer, adopt high-pressure, high-speed, high-temperature mixing method: on the internal mixer The top bolt pressure is greater than 0.8Mpa, the rotor speed of the internal mixer is greater than 31rpm, and the glue discharge temperature is greater than 140°C. , discharge the glue and take out the sheet, that is, the blended elastomer material filled with nitrile rubber reinforced with unmodified lignin is obtained.

[0051] Performance test: The physical and mechanical properties of the blended elastomer materials are tested using the same sulf...

Embodiment 3

[0064] Ligninamine Reinforced Bromobutyl Rubber-Filled Elastomer Blends

[0065] Use pine wood pulp dilute black liquor (specific gravity≤7~12Be°), add acid precipitation, wash to PH=5.5-6.5, obtain unmodified lignin; then use 10% NaOH solution and water Prepare a lignin solution with a pH of 12, heat and stir in a water bath to 60°C and then keep the temperature constant. Add 25% methylamine solution according to the molar ratio of 1:0.1, reflux and stir for 4 hours; after the reaction is completed, add sulfuric acid to the solution to pH=3.5, and the precipitate is washed to pH=5.5-6.5 and dried. That is, ligninamine is obtained.

[0066] According to the ratio of lignin: bromobutyl rubber=100:100 (parts by weight), knead with bromobutyl rubber in a 50L internal mixer, adopt high-pressure, high-speed, high-temperature mixing method: the top bolt pressure on the internal mixer is greater than 0.8Mpa, the rotor speed of the internal mixer is greater than 31rpm, and the debin...

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Abstract

The invention discloses a blending elastomer material reinforced and filled by industrial lignin, which consists of lignin and elastomer such as rubber, plastic or rubber and plastic composite material, wherein the blending elastomer material contains lignin 5 to 200 parts lignin relative to 100 parts (by weight) elastomer such as rubber, plastic or rubber and plastic composite material. The blending is achieved by adopting a high-pressure, high-speed and high-temperature blending method to integrate and complete the modification and the condensation of lignin, the mixing with the elastomer and the phase interface processing of the lignin and the elastomer on a one-off basis. The industrial lignin is hydroxymethylated modified lignin or non-hydroxymethylated modified lignin or unmodified lignin. The lignin is endowed with corresponding polycondensation activity relative to different elastomer materials, and has improved compatibility with the elastomer. The blending elastomer material can be vulcanized by a sulfur vulcanization system or a non-sulfur vulcanization system such as peroxide and can be used for manufacturing various kinds of elastomer products.

Description

technical field [0001] The invention relates to the field of materials, in particular to an industrial lignin-filled blended elastomer material and a preparation method thereof. Background technique [0002] Industrial lignin is an organic by-product of the pulp and paper industry. It is mainly composed of three elements, C, H, and O. It is an aromatic polymer with a three-dimensional space network structure connected by phenylpropyl units through -O- and -C-C-. compound. Realizing the efficient utilization of industrial lignin is the key to comprehensively control the pollution of pulp and paper industry. An important field of efficient utilization of industrial lignin is its application in elastomers. [0003] The research on the application of lignin in elastomers began in 1925. However, because the paper and pulp industry uses high temperature, high pressure, strong acid, and strong alkali to separate lignin from cellulose, the three-dimensional space network structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/00C08L101/00C08L7/00C08L9/02C08L23/28C08L27/06C08L61/06
Inventor 王迪珍罗东山何孟群张仲伦
Owner 广西合山林格高分子材料科技有限公司