Functional rubber strengthening agent and preparation method thereof

Abstract

Provided is a functionality rubber strengthening agent and process for preparation, which relates to a chemical industry auxiliary agent and a process for preparation. The method of preparation is as follows: a, under the condition of mechanical agitation, starch and initiating agent are charged in N, N-dimethylformamide solution whose temperature is 70-100 DEG C to gelatinize for 0.5-2 hours, b, under the condition of mechanical agitation, hydroxyl protecting agent component A and protonic acid component B is charged in the reactive solution of the first step, and reacts for 0.5-2 hours under the temperature of 70-100 DEG C to confect starch derivative through scouring, suction, drying and comminuting, and then coupling agent is charged in the liquor to confect the functionality rubber strengthening agent. The strengthening agent is simple in manufacturing technique, low in the cost and comparatively high in environment-friendly extent, which is widely applied in various types of tires and other rubber products.

Description

technical field [0001] The invention relates to a chemical auxiliary agent and a preparation method thereof, in particular to a functional auxiliary agent used for rubber reinforcement, improving the elasticity of vulcanized rubber, reducing heat generation and hysteresis loss, and a preparation method thereof. Background technique [0002] Modified starch is a substance called "engineered biopolymer filler", which is obtained from ordinary starch through various modifications. In recent years, research on starch denaturation at home and abroad has progressed rapidly, and its products are widely used in textiles, food, medicine, petrochemicals, papermaking and other fields. However, starch is rarely used in rubber. Using starch as a reinforcing agent for rubber can obtain new rubber composite materials with low heat generation, high elasticity, and low hysteresis. [0003] Due to the limitations of the structure of starch itself, the reinforcing effect of pure starch as a r...

AI Technical Summary

Problems solved by technology

Considering the structure of starch and rubber, most of them use acids or acid anhydrides containing c=c double bonds to graft and modify starch, but the starch esters prepared by this method often have a very low grafting rate and the conditions are difficult to control

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