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Method for preparing styrene-acrylate copolymer

A technology of acrylate and styrene, which is applied in the field of polymer copolymer preparation, can solve the problems of expensive dispersants and complex production processes, and achieve the effects of reducing production costs, simple implementation steps, and improving production efficiency

Inactive Publication Date: 2015-09-23
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of complex production process and expensive dispersant in the current preparation technology of styrene-acrylic ester copolymer. The preparation method of styrene-acrylate copolymer

Method used

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  • Method for preparing styrene-acrylate copolymer
  • Method for preparing styrene-acrylate copolymer
  • Method for preparing styrene-acrylate copolymer

Examples

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Embodiment 1

[0025] (1) In a reactor equipped with a reflux condensing device, add 0.5 g of carboxymethyl cellulose and 50 g of deionized water, heat it in a water bath to 80° C., and stir to dissolve it;

[0026] (2) Take by weighing 0.3g initiator dibenzoyl peroxide, place in the container that cleans and dry, add monomer 2g styrene and 8g methyl methacrylate, join the reaction of step (1) after dissolving device;

[0027] (3) Control the stirring speed at 350 rpm, and react at a constant temperature for 4 hours to form copolymer beads;

[0028] (4) After stopping the reaction, the copolymer beads were washed with water, filtered, and dried to obtain transparent bead-like styrene-acrylate copolymers. Optical microscope photographs of styrene-acrylate copolymers are shown in figure 1 .

Embodiment 2

[0030] (1) In a reactor equipped with a reflux condensing device, add 0.5 g of hydroxypropyl methylcellulose and 50 g of deionized water, heat it in a water bath to 80° C., and stir to dissolve it;

[0031] (2) Take by weighing 0.3g initiator dibenzoyl peroxide, place in the container that cleans and dry, add monomer 2g styrene and 8g methyl methacrylate, join the reaction of step (1) after dissolving device;

[0032] (3) Control the stirring speed at 350 rpm, and react at a constant temperature for 4 hours to form copolymer beads;

[0033] (4) After stopping the reaction, the copolymer beads were washed with water, filtered, and dried to obtain transparent bead-like styrene-acrylate copolymers. Optical microscope photographs of styrene-acrylate copolymers are shown in figure 2 , see the infrared spectrum image 3 .

Embodiment 3

[0035] (1) In a reactor equipped with a reflux condensing device, add 0.5 g of hydroxypropyl methylcellulose and 50 g of deionized water, heat it in a water bath to 80° C., and stir to dissolve it;

[0036] (2) Take by weighing 0.3g initiator dibenzoyl peroxide, place in the container that cleans and dry, add monomer 10g styrene and 0.1g methyl methacrylate, join the step (1) after dissolving in the reactor;

[0037] (3) Control the stirring speed at 350 rpm, and react at a constant temperature for 4 hours to form copolymer beads;

[0038] (4) After stopping the reaction, the copolymer beads were washed with water, filtered, and dried to obtain transparent bead-like styrene-acrylate copolymers.

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Abstract

The invention provides a method for preparing a styrene-acrylate copolymer. The method comprises the steps that the temperature of a cellulose water solution is raised to be 60-90 DEG C, a mixing solution of styrene, acrylate and an initiator is added, the reaction is carried out for 2-12 hours, polymer beads are washed with water, filtered and dried, and the styrene-acrylate copolymer is obtained. According to the method, cellulose serves as a dispersing agent, the styrene-acrylate copolymer is prepared with the suspension polymerizing method, and the method has the advantages that the method is simple, cost is low, and the particles of the copolymer are even. The method has the practical application prospect.

Description

technical field [0001] The invention relates to the field of preparation of polymer copolymers, in particular to a preparation method of styrene-acrylate copolymers. Background technique [0002] Styrene-acrylate copolymer has the dual advantages of polystyrene and acrylate polymers. It not only has good transparency, gloss, weather resistance and impact resistance, but also is easy to form and process. It is widely used in billboards and lighting materials , construction materials and other fields. The synthesis methods of styrene-acrylate copolymers mainly include bulk copolymerization, emulsion copolymerization and suspension copolymerization. Due to the common gel effect in the bulk copolymerization method, there will be an automatic acceleration phenomenon in the reaction process, and the controllability of the reaction is poor, so it is rarely used at present. However, in the emulsion copolymerization method, a large amount of emulsifier is used to stabilize the reac...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F220/14C08F220/18C08F2/20
Inventor 尚成新尹春慧石婉辉孙梦瑶
Owner SHANXI UNIV
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