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Styrene-butadiene-isoprene terpolymer integrated latex method for preparing ABS resin based on emulsion grafting method

A technology of isoprene terpolymer and ABS resin, which is applied in the field of preparing ABS resin based on emulsion grafting method of styrene-butadiene-isoprene terpolymer integrated latex, can solve the mechanical problems of ABS resin little performance improvement

Active Publication Date: 2016-01-06
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although polybutadiene latex can improve the cold resistance of ABS resin, styrene-butadiene latex can improve the processing rheology of ABS resin, and nitrile latex can improve the oil resistance of ABS resin, the above-mentioned types of latex can not improve the mechanical properties of ABS resin. Big

Method used

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  • Styrene-butadiene-isoprene terpolymer integrated latex method for preparing ABS resin based on emulsion grafting method
  • Styrene-butadiene-isoprene terpolymer integrated latex method for preparing ABS resin based on emulsion grafting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation method of styrene-butadiene-isoprene terpolymer integrated latex: add 150 parts of water, 1.5 parts of disproportionated potassium abietate, 3.5 parts of sodium stearate, 0.06 parts of hydroxide in a 20L polymerization kettle Potassium, 0.50 parts of potassium carbonate, 0.50 parts of tertiary dodecyl mercaptan, 0.20 parts of potassium persulfate, 0.15 parts of ammonium persulfate, 20 parts of styrene, after replacing 3 times with nitrogen, add 40 parts of isoprene, 40 parts Part of butadiene, turn on the stirring, heat up to 65°C, react for 11.5 hours, cool down, discharge, and end the reaction. The analysis results are as follows: the conversion rate of the monomer is 94.2%; the molecular weight of the terpolymer is 184,000, the particle size of the integrated latex of the terpolymer is 87.4nm, and the gel content is 62.38%; transition temperature T g It is -50.42°C.

Embodiment 2

[0025] The preparation method of styrene-butadiene-isoprene terpolymer integrated latex: the emulsifier used in embodiment 2 is disproportionated potassium abietate, and the consumption of disproportionated potassium abietate is 3.5 parts; initiator is potassium persulfate, The dosage of potassium persulfate is 0.30 parts; other monomer ratios, reagent formulations and polymerization conditions are all the same as in Example 1. The analysis results are as follows: the monomer conversion rate is 93.5%; the molecular weight of the terpolymer is 206,000, the particle size of the terpolymer integrated latex is 94.6nm, and the gel content is 64.89%; transition temperature T g It is -53.28°C.

Embodiment 3-8

[0027] The preparation method of styrene-butadiene-isoprene terpolymer integrated latex: the monomer ratio and reagent formula of embodiment 3-8 are as shown in table 2, other polymerization conditions are the same as embodiment 2, monomer The conversion rate was controlled at about 95%, and the molecular weight of the integrated latex of the terpolymer was shown in Table 2, wherein the molecular weight of the terpolymer was the number average molecular weight.

[0028] Table 1. Preparation of terpolymer integrated latex under different conditions

[0029]

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Abstract

The invention relates to a method for preparing acrylonitrile-butadiene-styrene(ABS) resin from phenylethylene-butadiene-isoprene terpolymer composite latex by emulsion grafting. The method is characterized by comprising four steps of: preparing phenylethylene-butadiene-isoprene terpolymer composite latex, agglomerating the phenylethylene-butadiene-isoprene terpolymer composite latex; preparing ABS grafting powder; and mixing and granulating to obtain ABS resin. The composite latex is characterized in that the number-average molecular weight is 3*10<4> to 35*10<4>; based on 100% of weight of monomer, the weight percentage of phenylethylene is 10%-65%, butadiene is 10%-70%, and isoprene is 10%-70%; the grain size of latex is 50nm to 200nm, and the grain size can be increased to 200 to 400nm after agglomeration; and the ABS resin prepared by agglomeration of composite latex and by emulsion grafting has higher impact resistance.

Description

technical field [0001] The invention belongs to the technical field of polymer material synthesis and preparation, relates to the field of synthetic resins, in particular to a class of emulsion graft blending method ABS resin and its preparation method, which is characterized in that styrene-butadiene-isoprene The ethylene terpolymer integrated latex replaces the traditional polybutadiene latex, and styrene and acrylonitrile monomers are grafted and polymerized based on free radical emulsion to prepare ABS grafted powder, and then blended and granulated with SAN resin to prepare emulsion grafted The graft blending method ABS resin significantly improves the mechanical properties of the emulsion graft blending method ABS resin. Background technique [0002] ABS resin is a widely used polymer material. Because of its excellent mechanical properties, good dimensional stability, heat resistance and chemical resistance, and easy molding and processing, it is widely used in electr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/12C08L55/02C08F279/04C08F236/18C08F212/08C08F6/18C08F2/26C08F2/30C08F4/40
Inventor 李杨申凯华尹国强王玉荣王艳色
Owner DALIAN UNIV OF TECH