Method for preparing rubber filler by using inorganic salt for neutralizing alkali lignin

A technology for alkali lignin and rubber filler, which is applied in the field of preparing rubber filler by neutralizing alkali lignin with inorganic salts, can solve problems such as environmental pollution, waste of alkali lignin, etc., so as to solve the problem of environmental pollution, improve utilization, and reduce production cost Effect

Active Publication Date: 2017-06-30
HUNAN MASTER SEALING
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a method for preparing rubber fillers by neutralizing alkali lignin with inorganic salts, and directly use inorganic salts to neutr

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing rubber filler by using inorganic salt for neutralizing alkali lignin
  • Method for preparing rubber filler by using inorganic salt for neutralizing alkali lignin
  • Method for preparing rubber filler by using inorganic salt for neutralizing alkali lignin

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1:

[0023] At room temperature, add 30 g of alkali lignin, 19.5 g of calcium-based montmorillonite, 7.8 g of aluminum sulfate octahydrate and 120 g of deionized water into a 500 ml ball milling jar, mix, and the pH of the mixture is 7, ball mill 3h, and finally dried at 80℃ for 14h to obtain lignin / calcium montmorillonite (the mass ratio of the raw material alkali lignin and calcium montmorillonite is 1:1), which is reserved.

Example Embodiment

[0024] Example 2:

[0025] At room temperature, add 30 grams of alkali lignin, 19.5 grams of calcium-based montmorillonite, 8.4 grams of magnesium sulfate heptahydrate and 120 grams of deionized water into a 500 ml ball milling jar, mix, and the pH of the mixture is 8, and ball milled for 3 hours Finally, it is dried at 80°C for 16h to obtain lignin / calcium montmorillonite (the mass ratio of the raw material alkali lignin and calcium montmorillonite is 1:1), which is reserved for future use.

Example Embodiment

[0026] Example 3

[0027] At room temperature, add 30 g of alkali lignin, 19.5 g of calcium-based montmorillonite, 9.6 g of zinc sulfate heptahydrate and 120 g of deionized water into a 500 ml ball milling jar, mix, and the pH of the mixture is 7, and ball mill for 3 hours Finally, it is dried at 80°C for 20 hours to obtain lignin / calcium montmorillonite (the mass ratio of raw material alkali lignin and calcium montmorillonite is 1:1), which is reserved for future use.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for preparing a rubber filler by using an inorganic salt for neutralizing alkali lignin. The filler is a product obtained by inorganic salt neutralization, ball milling and drying of alkali lignin and clay with a mass ratio of 10:1-1:10, and the water content of the finished product is 1 wt%-60 wt%. The inorganic salt is directly used as a neutralizing agent of alkali lignin and replaces an inorganic acid with relatively strong acidity, the preparation process is simplified, alkali lignin can be reasonably utilized, and the environmental pollution problem is solved. Through experiments, compared with an application of a filler prepared through sulfuric acid neutralization in rubber, the rubber composite material prepared by the rubber filler has all the tensile strength, stress at definite elongation, elongation at break, hardness and other mechanical properties significantly improved.

Description

technical field [0001] The invention relates to a method for preparing rubber filler, in particular to a method for preparing rubber filler by using inorganic salt to neutralize alkali lignin. Background technique [0002] At present, with the deepening of the comprehensive utilization of lignin, the application of alkali lignin to rubber composite materials has been developed. In the preparation process of rubber composite materials, if the alkali lignin is not treated, the strong alkalinity of the alkali lignin itself will affect the performance of rubber products; moreover, the lignin obtained by neutralizing the alkali lignin can be used as a rubber filler An organic modifier. Therefore, alkali lignin needs to be neutralized before rubber composites are prepared. Chinese patents CN101525447A, CN101525448A, and CN101928466A all use inorganic strong acids (hydrochloric acid or sulfuric acid, etc.) as neutralizing agents. When preparing rubber fillers, first mix clay and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08L97/00C08K3/34C08K3/22C08L9/02C08H7/00
CPCC08H6/00C08K3/22C08K3/346C08K2003/2224C08K2003/2227C08K2003/2296C08L9/02C08L97/005
Inventor 苏胜培汪绍军陈艳玲罗琼林汪巧蕾
Owner HUNAN MASTER SEALING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap