Acrylic rubber production method

Abstract

The invention discloses an acrylic rubber production method. The acrylic rubber production method comprises the following steps: weighing: weighing a material needed for synthesizing acrylic rubber for standby use; premixing: enabling the weighed material to enter a premixing apparatus and premixing; and polymerization reaction: injecting the premixed material into a polymerization reaction kettleto perform the polymerization reaction. According to the acrylic rubber production method, the premixing step is arranged prior to the polymerization reaction, and the monomer material, a catalyst and other additives needed for synthesizing the acrylic rubber are sufficiently premixed, so that the monomer material and the additives injected into the polymerization kettle to be subjected to polymerization reaction have good dispersity and reaction stability, the intensity difference of local reaction can be weakened, an induction period of the polymerization reaction can be shortened, and thepolymerization reaction conversion rate of the material can be increased.

Description

technical field [0001] The invention relates to the technical field of acrylate rubber production, in particular to a production method of acrylate rubber. Background technique [0002] Acrylate rubber (abbreviated as ACM) is obtained by polymerizing alkyl acrylate or alkoxyalkyl acrylate, which has the advantages of cold resistance and oil resistance, especially oil resistance at high temperature, in line with the use environment. . Therefore, the demand for acrylic rubber is increasing for automotive hoses, oil seals, O-rings, and conveyor belts built into devices / machines. Existing acrylate rubbers are all prepared by polymerization in an emulsifier aqueous solution, and the polymerization reaction is carried out in a polymerization kettle. After the materials for preparing acrylate rubber enter the polymerization kettle, the materials are required to achieve plug flow as much as possible. In order to ensure a narrow residence time distribution, the catalyst, monomer an...

AI Technical Summary

Problems solved by technology

Existing acrylate rubbers are all prepared by polymerization in an emulsifier aqueous solution, and the polymerization reaction is carried out in a polymerization kettle. After the materials for preparing acrylate rubber enter the polymerization kettle, the materials are required to achieve plug flow as much as possible. In order to ensure a narrow residence time distribution, the catalyst, monomer and solvent injected into the polymerization tank have poor dispersibility, poor stability, large differences in the strength of local reactions, and the reaction induction period when entering the polymerization reaction is too long. The products produced have quality problems such as high degree of branching, high gel content, and uneven molecular weight distribution.

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