Polyarylene thioether resin composition

Abstract

Provided is a polyarylene sulfide resin molded article having a good surface state which can be molded at a significantly high crystallization speed without impairing heat resistance, mechanical properties, chemical resistance, dimensional stability and flame retardancy of polyarylene sulfide resins. The resin composition comprises (A) 100 pts. wt. polyarylene sulfide resin, (B) 0.1-10 pts. wt. aromatic phosphate of a specific structure, and (C) 3-35 pts. wt. polyphenylene oxide resin.

Description

technical field [0001] The present invention relates to a poly(arylene sulfide) resin composition and a molded article thereof, which significantly increase the crystallization rate of the molded article, suppress the bleeding of additives to the surface of the molded article, and have a good surface condition. Background technique [0002] Polyarylene sulfide (hereinafter referred to as PAS) resin represented by polyphenylene sulfide (hereinafter referred to as PPS) resin has high heat resistance, mechanical properties, chemical resistance, dimensional stability, and flame retardancy, so Widely used in electronic and electrical equipment parts materials, automotive machinery parts materials, chemical equipment parts materials, etc. However, PAS resin has a slow crystallization rate and a high glass transition temperature, so it is easy to form a partially uneven crystal structure, which will cause uneven appearance and structure on the surface of the molded product. In orde...

AI Technical Summary

Problems solved by technology

However, with these methods, gas generation during molding melting, roughening of the molding surface, and degradation of mechanical properties have been observed.

Among them, the phosphoric acid ester described in JP-A-1-225660 has a good effect, but its thermal stability during high-temperature melting cannot be said to be sufficient, and there is still room for improvement in solving the aforementioned problems.

[0004] In addition, the phosphoric acid ester described in JP-A-2003-335945 is also effective and excellent in thermal stability when melted at a high temperature. Therefore, there are problems such as phosphate ester leakage.

[0005] As a method of improving the surface, physical properties, and flame retardancy of molded products, there is also the addition of polyphenylene ether resin (polyphenoxy resin) and certain phosphorus compounds (JP-P5-25391, JP-6-57135, JP-7 -33974, Japanese Patent Application Hei 7-145310), but these methods are the same as the method of adding phosphate ester listed above, due to the generation of gas during molding melting and retention in the molding machine, it can be seen that the molding surface is rough or Reduced physical and mechanical properties, etc.

Images