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Grafting modification process of regenerating waste butyl rubber

A waste butyl rubber graft modification technology, which is applied in the field of waste butyl rubber graft modification and regeneration, can solve the problems of waste butyl rubber limitations, etc., and achieve no secondary pollution, simple production process, and pollution elimination Effect

Inactive Publication Date: 2007-08-22
SICHUAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This situation makes the application of waste butyl rubber mostly limited to the lower level so far.

Method used

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  • Grafting modification process of regenerating waste butyl rubber
  • Grafting modification process of regenerating waste butyl rubber
  • Grafting modification process of regenerating waste butyl rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Add 2000g of waste butyl rubber powder with a particle size of ≤100μm, 50g of pentaerythritol monoester methacrylate, and 5g of benzoyl peroxide into a high-speed mixer. Under stirring, the speed is 2000r / min, mix the materials, and react at a temperature of 100°C 0.5h, discharge. The butyl rubber powder modified by surface hydroxylation is obtained.

Embodiment 2

[0037] Add 2000g of waste butyl rubber powder with a particle size of ≤100μm, 100g of monoglyceride acrylate, and 10g of dicumyl peroxide (DCP) into the reaction kettle, and mix the materials under stirring at a speed of 100r / min at a temperature of 120 ℃ reaction 1h, discharge. The butyl rubber powder modified by surface hydroxylation is obtained.

Embodiment 3

[0039] Add 2000g of waste butyl rubber powder with a particle size of ≤100μm, 200g of pentaerythritol monoester, and 40g of tert-butyl peroxybenzoate into a high-speed mixer, and mix the materials at a temperature of 150 ℃ reaction 2h, discharge. The butyl rubber powder modified by surface hydroxylation is obtained.

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Abstract

The grafting modification process of regenerating waste butyl rubber features that waste butyl rubber powder in 100 weight portions, modifier in 2.5-10 weight portions and initiator in 0.25-2 weight portions are added into reactor with stirrer to react at 100-150 deg.c for 0.5-2 hr so as to obtain surface grafting modified active butyl rubber powder. The regenerated butyl rubber powder has good physical and mechanical performance and is used in preparing butyl rubber product.

Description

Technical field: [0001] The invention relates to a method for grafting, modifying and regenerating waste butyl rubber. The waste butyl rubber is used in the processing of butyl rubber products after being grafted and modified, and belongs to the field of waste rubber reuse. Background technique [0002] With the development of society, the use of modern means of transportation such as automobiles is becoming more and more widespread, and the consumption of rubber products mainly composed of vehicle tires is also increasing year by year. What follows is that mountains of waste rubber products, including waste butyl rubber, are produced every year all over the world. [0003] As we all know, the vulcanization of highly unsaturated rubber such as natural rubber, styrene-butadiene rubber, butadiene rubber, and neoprene mainly uses sulfur system. Therefore, to regenerate the above-mentioned vulcanized waste rubber, it is necessary to destroy the rubber network. S-S key and S-C k...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F279/02C08F4/34C08L17/00
Inventor 杨冰高丽萍熊小满唐勇朱谷雨
Owner SICHUAN UNIV