Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Lignin-modified diatomite and application thereof as rubber reinforcing agent

A technology of rubber reinforcing agent and diatomite, which is applied in the treatment of fibrous fillers and dyed polymer organic compounds, can solve problems such as pollution and environmental emissions, reduce production costs, simplify the preparation process, and solve emissions and environmental problems. Effects of Conservation Questions

Inactive Publication Date: 2009-09-09
HUNAN NORMAL UNIVERSITY
View PDF2 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to realize the comprehensive utilization of lignin in papermaking black liquor, simplify the process, reduce the production cost of rubber reinforcing agent, and solve the problems of papermaking wastewater discharge and environmental pollution

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
  • Lignin-modified diatomite and application thereof as rubber reinforcing agent
  • Lignin-modified diatomite and application thereof as rubber reinforcing agent
  • Lignin-modified diatomite and application thereof as rubber reinforcing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Add 10 grams of diatomite and 200 milliliters of deionized water in a 500 milliliter reactor, stir for 24 hours, then add 50 milliliters of papermaking black liquor containing 20% ​​lignin by weight, continue to stir for 24 hours, then add hydrochloric acid to The pH of the slurry was 5-6, suction filtered, washed repeatedly until the filtrate was close to neutral, and finally dried at 75° C. for 15 hours to obtain 1:1 lignin-modified diatomite for future use.

Embodiment 2

[0016] Add 10 grams of diatomaceous earth and 200 milliliters of deionized water in 1000 milliliters of reactors, stir 24 hours, then add 250 milliliters of papermaking black liquors containing 20% ​​lignin by weight, continue stirring for 24 hours, then add hydrochloric acid to The pH of the slurry is 5-6, suction-filtered, washed repeatedly until the filtrate is close to neutral, and finally dried at 70° C. for 12 hours to obtain 1:5 lignin-modified diatomite for future use.

Embodiment 3

[0018] Add 10 grams of diatomaceous earth and 200 milliliters of deionized water in a 1500 milliliter reaction kettle, stir for 24 hours, then add 450 milliliters of papermaking black liquor containing 20% ​​lignin by weight, continue stirring for 24 hours, then add hydrochloric acid to the slurry pH = 5-6, suction filtration, repeated washing until the filtrate is close to neutral, and finally dried at 70°C for 10 hours to obtain 1:9 lignin-modified diatomite 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 lignin-modified diatomite and the application thereof as rubber reinforcing agent. The modifying agent of the lignin-modified diatomite is lignin in black papermaking liquor; the mass ratio of diatomite to the lignin is 10:1-1:10; and the water content of the lignin-modified diatomite is 20-50 percent. The application of the organically modified diatomite as rubber reinforcing agent is as follows: 1-100 portion(s) of dehydrated lignin-modified diatomite is added to 100 portions of unvulcanized rubber; the dehydrated lignin-modified diatomite and the unvulcanized rubber are mixed and milled in a mixing mill for 2-4 hours to be made into masterbatch and then made into lignin-modified diatomite / rubber composite in accordance with the prior method. The lignin in the black papermaking liquor is directly used as the modifying agent to replace the prior silane coupling agent; the lignin-modified diatomite has rich raw material source and is easy to produce; the production cost of the rubber reinforcing agent is markedly reduced, and the problems of the discharge of wastewater generated in paper making and the environmental protection are solved.

Description

technical field [0001] The invention relates to a lignin-modified diatomite and its application as a rubber reinforcing agent. Background technique [0002] Chinese patent 200410062795.5 discloses a diatomite used as a rubber reinforcing agent, but it needs to add a silane coupling agent, the process is complicated, the cost of raw materials is high, and the price is expensive, so it is difficult to popularize. On the other hand, the environmental pollution caused by the discharge of papermaking black liquor has also become a difficult problem for the development of papermaking enterprises. The existing treatment of papermaking black liquor does not comprehensively utilize the lignin therein. Chinese patent CN86106871A discloses the use of diatomite to treat papermaking wastewater. The process is simple, but the regeneration of diatomite is to burn off the organic matter, which not only greatly wastes the lignin in the black liquor, but also causes great harm to the environm...

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): C08K9/04C08K3/34C08L9/00C08L9/02C08L9/06C09C1/28C09C3/10
Inventor 苏胜培廖泽栋曹仲林刘寿山彭凤仙
Owner HUNAN NORMAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com