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Rubber modification method

A technology of rubber modification and modified powder, applied in the field of rubber processing, can solve problems such as poor rubber performance, and achieve the effects of good wear resistance and simple preparation process

Inactive Publication Date: 2017-12-15
LIUZHOU YINGHANG AUTO PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to provide a kind of rubber modification method, this rubber modification method can solve the problem that the rubber performance after modification is poor

Method used

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  • Rubber modification method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] This implementation rubber modification method comprises the following steps:

[0016] A. Mix the coupling agent, solvent, and dispersant to obtain a mixed solution; wherein the coupling agent is a titanate coupling agent; the solvent is benzene; the dispersant is a stearate; The mass ratio of coupling agent, solvent and dispersant is 1:10:2;

[0017] B. Add rubber powder to the mixed solution described in step A, then add modified powder, use a stirring mixer, the mixing time is 5min, the speed of the stirring mixer is 2000rpm, add a crosslinking agent, and then mix well, using a stirring mixer Mixer, the mixing time is 5min, and the rotating speed of the mixing mixer is 1500rpm; the modified powder is one of nano-titanium dioxide, ultra-fine talcum powder, nano-calcium carbonate, and ultra-fine mica powder; the cross-linking agent is Nitroethane; the mass ratio of the mixed solution, rubber powder, modified powder and crosslinking agent is 15:3.5:0.3:0.15; the partic...

Embodiment 2

[0019] This implementation rubber modification method comprises the following steps:

[0020] A. Mix the coupling agent, solvent, and dispersant to obtain a mixed solution; wherein the coupling agent is a titanate coupling agent; the solvent is toluene; the dispersant is a stearate; The mass ratio of coupling agent, solvent and dispersant is 1:15:2.5;

[0021] B. Add rubber powder to the mixed solution described in step A, then add modified powder, use a stirring mixer, the mixing time is 20min, the speed of the stirring mixer is 1500rpm, add a cross-linking agent, and then mix well, using a stirring mixer Mixer, the mixing time is 20min, and the rotating speed of the mixing mixer is 2500rpm; the modified powder is one of nano-titanium dioxide, ultra-fine talcum powder, nano-calcium carbonate, and ultra-fine mica powder; the cross-linking agent is Nitroethane; the mass ratio of the mixed solution, rubber powder, modified powder and crosslinking agent is 25:5:0.7:0.3; the part...

Embodiment 3

[0023] This implementation rubber modification method comprises the following steps:

[0024] A. Mix the coupling agent, solvent, and dispersant to obtain a mixed solution; wherein the coupling agent is a titanate coupling agent; the solvent is xylene; the dispersant is a stearate; The mass ratio of coupling agent, solvent and dispersant is 1:13:1.5;

[0025] B. Add rubber powder to the mixed solution described in step A, then add modified powder, use a stirring mixer, the mixing time is 15min, the speed of the stirring mixer is 500rpm, add a crosslinking agent, and then mix, using a stirring mixer Mixer, the mixing time is 15min, and the rotating speed of the stirring mixer is 3000rpm; the modified powder is one of nano-titanium dioxide, ultra-fine talcum powder, nano-calcium carbonate, and ultra-fine mica powder; the cross-linking agent is Nitroethane; the mass ratio of the mixed solution, rubber powder, modified powder and crosslinking agent is 30:4:1:0.2; the particle siz...

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Abstract

The invention discloses a rubber modification method. The rubber modification method comprises the following steps: uniformly mixing a coupling agent, a solvent and a dispersing agent, thus obtaining a mixed solution; then adding rubber power, then adding modified powder, and uniformly mixing; adding a cross-linking agent, and uniformly mixing again. According to the rubber modification method disclosed by the invention, a raw material, the rubber powder used in the invention mainly is selected from a large amount of molecular fragment particle rubber powder generated by fracturing a cross-linked network structure of waste rubber through a smashing machine, the rubber powder is coated by adopting the modified powder, the production and preparation technology is simple, the modification effect is better, and the produced modified rubber has good wear resistance and is very high in elasticity, breaking strength and elongation.

Description

technical field [0001] The invention relates to the technical field of rubber processing, in particular to a rubber modification method. Background technique [0002] The reuse of waste tires and waste rubber products, and the preparation of rubber powder by modification is the way to realize the comprehensive utilization of resources; rubber powder is a large number of molecular debris particles produced after the cross-network structure of waste rubber is broken by a pulverizer, and its surface is inert. , is composed of various components such as rubber, carbon black, softener and other additives, so it has poor compatibility with rubber and plastics, and direct blending will reduce product performance. [0003] At present, rubber powder is mainly used as reclaimed rubber, but the production of reclaimed rubber will cause secondary pollution, and its tensile properties are only about 60% of rubber powder. Therefore, surface activation modification of rubber powder to imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L19/00C08K13/02C08K3/22C08K3/26C08K3/34C08K5/10C08K5/098C08J3/24
CPCC08K13/02C08J3/24C08J2319/00C08K3/22C08K3/26C08K3/34C08K5/098C08K5/10C08K2003/2241C08K2003/265C08K2201/013C08K2201/014C08L19/003
Inventor 莫海燕
Owner LIUZHOU YINGHANG AUTO PARTS