Preparation method of aqueous-solution-method-modified starch rubber functional auxiliary agent

Abstract

The invention relates to a preparation method of an aqueous-solution-method-modified starch rubber functional auxiliary agent, and relates to a preparation method of a rubber auxiliary agent. The method comprises the steps that: under a condition of mechanical stirring, corn starch or tapioca starch is gelatinized with added distilled water; a component A is added under a temperature of 70-100 DEG C, wherein the component A is one or a combination of proton acid or aluminum salt such as aluminum nitrate, aluminum phosphate, hydrochloric acid, sulfuric acid, nitric acid, and benzoic acid; a component B is simultaneously added, wherein the component B is alkenyl acid or anhydride containing c=c double bond, such as maleic anhydride or acrylic acid; a reaction is carried out for 0.5-4h; a reaction product is bake-dried, such that a starch derivative is prepared. The mass ratio of the component A to starch is 1:5-1:100, and the mass ratio of the component B to starch is 1:5-1:100. The filling material provided by the invention has the advantages of simple production process, low cost, and high environment-protection degree. The product is widely applied in various tires and other rubber products.

Description

technical field [0001] The invention relates to a preparation method of a rubber auxiliary agent, in particular to a preparation method of an aqueous solution method modified starch rubber functional auxiliary agent. Background technique [0002] In the rubber industry, traditional rubber reinforcing agents are mainly based on carbon black fillers. However, because carbon black will cause serious damage to the surrounding environment during the production process, and at the same time, the vulcanized rubber obtained by carbon black as a rubber reinforcing agent has problems such as high heat generation and low elasticity. Therefore, people have been looking for a supplement Strong agent instead of carbon black. In recent years, with the implementation of EU labeling regulations, strict requirements have been imposed on the rolling resistance of tires and additive pollution, and newer development topics for functionalized rubber additives need to be proposed. Starch is a ki...

AI Technical Summary

Problems solved by technology

However, because carbon black will cause serious damage to the surrounding environment during the production process, and at the same time, the vulcanized rubber obtained by carbon black as a rubber reinforcing agent has problems such as high heat generation and low elasticity. Therefore, people have been looking for a supplement Strong agent instead of carbon black

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