Waste rubber particle surface treatment method

Abstract

The invention discloses a waste rubber particle surface treatment method, and belongs to the high molecular material technical field. The method includes the following steps: (1) treating the surface of waste rubber particles with clean water; (2) treating the surface of the waste rubber particles with an acid solution; (3) treating the surface of the waste rubber particles with an epoxy emulsion; (4) curing the surface of the waste rubber particles; and (5) crushing and screening of waste rubber particle aggregates. The epoxy emulsion is composed of a component A and a component B, the component A is an oily epoxy resin solution, the component B is a waterborne epoxy curing agent GCA01 or GCA02, the component A and the component B are mixed and stirred according to the mass ratio of 1:(1-2) until uniform milky white emulsion is formed, and then the emulsion is diluted by clean water. The method can effectively improve the compatibility of the waste rubber particles and a cementing material, and significantly improves the interfacial bonding strength between the waste rubber particles and the cementing material.

Description

technical field [0001] The invention belongs to the technical field of polymer material reuse, and in particular relates to a new method for surface treatment of waste rubber particles. Background technique [0002] With the rapid development of the automobile industry, waste rubber tires have increased dramatically. According to statistics, my country currently consumes nearly 2 million tons of rubber annually, and the recycling rate is less than 30%. The increasing disposal of waste rubber has become a global environmental and resource problem, and its reasonable recycling and utilization is of great significance to our country, which has prominent environmental protection problems and relatively scarce resources. [0003] Using waste rubber as construction material is a better way to deal with and utilize this solid waste. Among them, rubber concrete, as a new type of civil engineering material, has become a research hotspot at home and abroad. Rubber has the character...

AI Technical Summary

Problems solved by technology

[0004] Studies at home and abroad have shown that compared with ordinary concrete, the compressive strength and flexural strength of rubber concrete are greatly reduced, which hinders its large-scale engineering application

The reduction in the strength of rubber concrete is mainly due to the poor compatibility of rubber powder or rubber particles with cement paste, and an effective bond cannot be formed between the two