Method for producing acrylic ester copolymer

Abstract

The invention relates to a method for producing acrylic ester copolymer, which belongs to the technical field of organic adhesives. The method comprises the following steps: preparing a monomer solution; preparing an emulsifying agent solution; preparing an emulsion; preparing a bed charge solution; preparing an initiator solution; and heating up the bed charge solution to a temperature of between 40 and 50 DEG C, adding the initiator solution, and stirring the mixture sufficiently to obtain a semi-finished product; heating up the semi finished product continuously to a temperature of between80 and 85 DEG C, when the reflux inside temperature reaches between 85 and 90 DEG C, dripping the emulsion and the initiator solution for 1 to 5 hours, then keeping temperature for 1 to 3 hours, cooling the mixture to a temperature of less than 40 DEG C, and filtering the mixture to discharge the materials. The method has the advantages of reasonable design, simple operation and low production cost; and the obtained acrylic ester copolymer adhesive has reasonable adhesive property and unobvious burning peculiar smell, improves the performances of tensile strength, flexible bendability, appearance and color and the like of a gasket if the acrylic ester copolymer adhesive is applied to a gasket, reduces the burning peculiar smell, is convenient for subsequent packaging processing of a catalyst product and the like, and makes the quality of gasket products reach or exceed that of similar products in other countries.

Description

technical field [0001] The invention belongs to the technical field of organic adhesives, and in particular relates to a production method of an acrylate copolymer. Background technique [0002] The environmental problems caused by automobile exhaust emissions have been paid more and more attention by countries all over the world, and the post-treatment of automobile exhaust gas is completely completed by catalytic converters. Its structure includes catalysts, carriers, liners, shells and other components. Among them, the liner is one of the key components in the catalytic converter. It can prevent the deformation of the catalytic converter caused by thermal expansion and contraction during operation, and protect the catalytic converter from impact and damage caused by uneven roads and braking. It also plays the role of heat insulation, sound insulation and sealing, which can reduce the temperature of the catalytic converter shell, improve the noise control of the exhaust sy...

AI Technical Summary

Problems solved by technology

In 1999, my country independently developed the liner. However, due to the unsatisfactory performance of the adhesive, one of the main raw materials for the liner, the bonding effect is average, resulting in low tensile strength, poor bending flexibility, poor appearance and color, and burning. Odor and other defects; and one-sided improvement of the adhesive bonding performance will lead to an increase in the friction coefficient of the liner product, so that during the encapsulation process of the catalytic converter, the axial thrust of the carrier is too large, which may cause failures such as carrier breakage and liner friction cracking

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