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Method for preparing novel PVC modification auxiliary agent acrylonitrile-chlorinated polyethylene-methyl methacrylate polymer

A technology of methyl methacrylate and chlorinated polyethylene, applied in the field of polymer materials, can solve the problems of affecting particle characteristics and poor dispersion effect, and achieve the effect of uniform composition, good dispersion effect and less dosage

Inactive Publication Date: 2020-02-21
SHANDONG RUIFENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Half of the existing production uses only a single dispersant, and the dispersion effect in the water phase is not good under high temperature conditions, which affects the characteristics of the particles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 30 parts of CPE, 0.2 parts of polyvinyl alcohol (PVA), 0.44 parts of calcium phosphate, 0.01 parts of emulsifier OP-10, and 500 parts of deionized water into the reactor, stir and mix to obtain a CPE aqueous phase suspension; disperse to the above Add 14 parts of AN, 56 parts of MMA, and 0.1 part of benzoyl peroxide to the system, stir and swell at 40°C for 1.0h, then polymerize at 90°C and a pressure of 0.3Mpa for 4h to end the polymerization; the polymerization product is separated and dried, Obtained 92 parts of weather-resistant and aging-resistant ACM products.

Embodiment 2

[0034] Add 40 parts of CPE, 0.2 parts of polyvinyl alcohol (PVA), 0.44 parts of calcium phosphate, 0.01 parts of emulsifier OP-10, and 500 parts of deionized water into the reactor, stir and mix to obtain a CPE aqueous phase suspension; disperse to the above Add 12 parts of AN, 48 parts of MMA, and 0.1 part of benzoyl peroxide into the system, stir and swell at 40°C for 1.0h, then polymerize at 90°C and a pressure of 0.3Mpa for 4h to complete the polymerization; the polymerization product is separated and dried, Obtained 95 parts of weather-resistant and aging-resistant ACM products.

Embodiment 3

[0036] Add 50 parts of CPE, 0.2 parts of polyvinyl alcohol (PVA), 0.44 parts of calcium phosphate, 0.01 parts of emulsifier OP-10, and 500 parts of deionized water into the reactor, stir and mix to obtain a CPE aqueous phase suspension; disperse to the above Add 10 parts of AN, 40 parts of MMA, and 0.1 part of benzoyl peroxide into the system, stir and swell at 40°C for 1.0h, then polymerize at 90°C and a pressure of 0.3Mpa for 4h to end the polymerization; the polymerization product is separated and dried, Obtained 94 parts of weather-resistant and aging-resistant ACM products.

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PUM

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Abstract

The invention belongs to the field of polymer materials, and particularly relates to a method for preparing a novel PVC modification auxiliary agent acrylonitrile-chlorinated polyethylene-methyl methacrylate polymer. The polymer is synthesized mainly by acrylonitrile, chlorinated polyethylene, methyl methacrylate, a composite dispersant, a water-soluble peroxide initiator, deionized water, and thelike. The composite dispersant comprises an organic dispersant and an inorganic dispersant, and a mass ratio of the organic dispersant to the inorganic dispersant is 1:2.2-2.2:1. The method comprisesthe following steps: mixing and dispersing the raw materials in a reactor, then performing swelling, then carrying out a polymerization reaction, and performing separation and drying. The method is scientific and reasonable, and simple and easy to implement. Due to the use of the organic / inorganic composite dispersant, the dispersion effect is good, the use amount is small, the obtained ACM particles have good characteristics, and post-treatment and processing are easy. An appropriate peroxide initiator is selected, a high-temperature constant-temperature, continuous temperature increase or stepwise temperature increase polymerization process is adopted, the polymerization conversion rate is improved, the composition of a product is relatively uniform, and the product has excellent physical and mechanical properties, chemical properties and processing properties.

Description

technical field [0001] The invention belongs to the field of macromolecular materials, and in particular relates to a preparation method of a novel PVC modification auxiliary agent acrylonitrile-chlorinated polyethylene-methyl methacrylate polymer. Background technique [0002] Acrylonitrile-chlorinated polyethylene-methyl methacrylate (AN-CPE-MMA) is a terpolymer formed by grafting AN and MMA monomers onto CPE. It mainly overcomes the lack of performance of CPE and developed a polymer material. Compared with CPE, ACM greatly improves the physical, mechanical and chemical properties of CPE. [0003] ACM is produced by bulk, solution and aqueous phase suspension swelling graft copolymerization. The ACM is prepared by aqueous phase suspension swelling graft polymerization, and it is easier to control the polymerization temperature and particle shape during the polymerization process, the operation is simple and convenient, and it is suitable for industrial application. Half...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F255/02C08F220/44C08F220/14C08F2/18C08L51/06C08L27/06
CPCC08F2/18C08F255/023C08L27/06C08F220/44C08F220/14C08L51/06
Inventor 刘春信张海瑜焦淑元
Owner SHANDONG RUIFENG CHEM