Thermoplastic resin composition, preparation method therefor, and molded product

Abstract

The present invention relates to a thermoplastic resin composition, a preparation method therefor, and a molded product and, more specifically, to a thermoplastic resin composition comprising: a-1) 1-30 wt% of a first graft polymer obtained by graft-polymerization of an aromatic vinyl compound and a vinyl cyan compound onto a conjugated diene-based rubber having an average particle diameter more than or equal to 0.05 mu m but less than 0.2 mu m; a-2) 5-45 wt% of a second graft polymer obtained by graft-polymerization of an aromatic vinyl compound and a vinyl cyan compound onto a conjugated diene-based rubber having an average particle diameter of 0.2 to 0.5 mu m; b) 50-80 wt% of an aromatic vinyl compound-vinyl cyan compound copolymer; and c) 1-10 wt% of a (meth)acrylic acid alkyl ester-based polymer, to a preparation method therefor, and to a molded product. The present invention can provide: a thermoplastic resin composition, which has mechanical properties equal to or higher than those of a conventional thermoplastic resin composition, is excellent in terms of adhesion to plating at the time of a plating process using a chrome-free etching liquid with reduced toxicity, heat cycle characteristics, and appearance quality, and does not raise the processing cost and thus is economical; a preparation method therefor; and a molded product comprising the same.

Description

technical field [0001] [Cross Reference to Related Application] [0002] This application claims priority to Korean Patent Application No. 10-2017-0120158 filed in the Korean Intellectual Property Office on September 19, 2017, the disclosure of which is incorporated herein by reference. [0003] The present invention relates to a thermoplastic resin composition, a preparation method thereof, and a molded article produced using the thermoplastic resin composition, and more particularly, to a thermoplastic resin composition having mechanical properties equal to or better than conventional thermoplastic resin compositions Articles, their preparation methods and molded parts manufactured using the thermoplastic resin composition. According to the present invention, the thermoplastic resin composition has excellent plating adhesion, thermal cycle characteristics, and appearance during a plating process using a less toxic chrome-free etchant. In addition, since the use of the ther...

AI Technical Summary

Problems solved by technology

[0007] However, in the case of less toxic plating processes compared to conventional processes (using etchant), plating adhesion decreases or non-plating occurs

This causes another problem that thermal cycle performance is easily deteriorated

[0008] As a method to solve these problems, a method of increasing the rubber content has been proposed, but it causes deterioration of thermal cycle performance due to a decrease in moldability and an increase in the coefficient of linear expansion

As another method, there is a method of increasing the etching temperature or time during the electroplating process, but this method increases the overall process time, which is not ideal in terms of efficiency and process cost

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