A kind of modified ethylene-methyl acrylate copolymer and its preparation method and application

Abstract

The invention provides a modified ethylene-methyl acrylate copolymer and its preparation method and application. The present invention obtains an ethylene-methyl acrylate copolymer by preparing a nickel complex catalyst, and utilizing the catalyst to efficiently catalyze the copolymerization process of ethylene and methyl acrylate; and by combining the ethylene-methyl acrylate copolymer and silicon dioxide The nanoparticles were reacted with vinyltrimethoxysilane and then blended and crosslinked to prepare the modified ethylene-methyl acrylate copolymer. Through the above method, the present invention can utilize the catalyst to regulate and control the structure and performance of the ethylene-methyl acrylate copolymer, so as to promote the modification process to be carried out efficiently, so that the obtained modified ethylene-methyl acrylate copolymer has a higher Melting point, excellent mechanical properties and corrosion resistance, can be applied to reverse osmosis membrane support materials, and has high practical application value.

Description

A kind of modified ethylene-methyl acrylate copolymer and its preparation method and application technical field The present invention relates to the synthesis and modification technical field of multipolymer, relate in particular to a kind of modified ethylene-methyl acrylate Copolymer and its preparation method and application. Background technique Ethylene-methyl acrylate copolymer is to take ethylene as main raw material, and it is copolymerized with polar monomer methyl acrylate The obtained product has excellent thermal stability, filling, flexibility, cohesion and good compatibility. Extrusion, sheet, molding, blow molding, extrusion and other fields are widely used. However, the performance of raw materials in different fields of application The requirements are not consistent, and the ethylene-methyl acrylate copolymer prepared by the general method is difficult to completely match the requirements of various fields. Therefore, it is necessary to modify t...

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Problems solved by technology

However, the modification method provided by this patent is relatively complicated, and a wide variety of raw materials need to be used, and the products modified according to this method are mainly used in cable sheathing materials. It is necessary to redesign the corresponding modification method so that the prepared modified ethylene-methyl acrylate meets the performance requirements of the reverse osmosis membrane support material

[0004] In addition, the current modification of ethylene-methyl acrylate copolymers is mainly based on the grafting or compounding of existing ethylene-methyl acrylate copolymers, and the preparation process of ethylene-methyl acrylate copolymers has not been adjusted.

However, as a copolymer of ethylene-methyl acrylate, the molecular weight and branching of the product obtained by polymerization under different conditions will have large differences, which will affect the effective progress of the grafting or compounding process, resulting in the actual modification effect not ideal

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