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Rubber modification method

A technology of rubber modification and rubber powder, which is applied in the direction of building components, building insulation materials, construction, etc., can solve the problems of complicated process methods and ineffective effects, and achieve the effect of simple process flow, low cost and improved performance

Inactive Publication Date: 2014-09-17
福建省燕宁顺通科技发展有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods improve the characteristics of waste rubber to a certain extent, but the effect is not very obvious, and the process method is relatively complicated

Method used

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  • Rubber modification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh 30g of waste rubber powder with a particle size of 60 mesh and put it into a glass container, add 500ml of distilled water and 10g of concentrated nitric acid, heat the mixture to 40°C, and bubble with nitrogen for 30 minutes, then add 6g of methyl acrylate, azobis Isobutyronitrile 0.3g, reacted for 2h. After the reaction, the sample was thoroughly washed with distilled water, dried at 70°C, and then extracted with a Soxhlet instrument for 24 hours to obtain the modified rubber, marked as A.

Embodiment 2

[0019] Weigh 40g of waste rubber powder with a particle size of 70 mesh and put it into a glass container, add 500ml of distilled water and 30g of concentrated nitric acid, heat the mixture to 100°C, and bubble with nitrogen for 30 minutes, then add 24g of methyl acrylate and ammonium persulfate 2g, reaction 6h. After the reaction, the sample was thoroughly washed with distilled water, dried at 70°C, and then extracted with a Soxhlet instrument for 24 hours to obtain a modified rubber, labeled B.

Embodiment 3

[0021] Weigh 40g of waste rubber powder with a particle size of 80 mesh and put it into a glass container, add 500ml of distilled water and 20g of concentrated nitric acid, heat the mixture to 80°C, and bubble it with nitrogen for 30 minutes, then add 24g of ethyl acrylate and 2g of BPO to react 4h. After the reaction, the sample was thoroughly washed with distilled water, dried at 70°C, and then extracted with a Soxhlet instrument for 24 hours to obtain a modified rubber, labeled C.

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Abstract

The invention belongs to the technical field of rubber modification and recovery, in particular to a rubber modification method. Put the rubber powder with a particle size of 60-100 mesh into a glass container, add distilled water and concentrated nitric acid, heat the mixture, and bubble it with nitrogen for 30 minutes, then add monomers and initiators, and react for a period of time. After the reaction, use Thoroughly washed with distilled water, dried, and then extracted for 24 hours to obtain the final product. Using the rubber powder modified by the method of the invention as an asphalt additive can improve certain properties of the asphalt to a greater extent. In addition, the modification method provided by the invention has the advantages of simple process flow, convenient operation, and low cost.

Description

technical field [0001] The invention belongs to the technical field of rubber modification and recovery, in particular to a rubber modification method. Background technique [0002] With the soaring price of oil, the recycling of resources has attracted more and more attention. Waste tires and waste tires are called black pollution. A large number of waste tires are piled up, occupying a large amount of land and causing damage to the social ecological environment and pollute. [0003] Waste tires are mainly composed of butadiene rubber, styrene-butadiene rubber, natural rubber, carbon black, etc. If it is reused, it will have dual effects of economy and environmental protection. In recent years, some people have made waste tires into waste rubber powder and added them to asphalt, which is a research hotspot in asphalt modification. However, due to various reasons, people have encountered some bottlenecks in utilizing waste rubber powder as an asphalt additive. For exampl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/04C08F291/00C08F220/18C08L95/00
Inventor 车春玲
Owner 福建省燕宁顺通科技发展有限责任公司