PURPOSE: To obtain a PPS resin composition suitable for sheets and a PPS sheetlike material, having mechanical strength of practical level and extremely improved thermal dimensional stability and heat resistance (solder heat resistance) while maintaining excellent characteristics of PPS such as moisture- absorption characteristics, high-frequency characteristics and chemical resistance.

CONSTITUTION: This polyphenylene sulfide resin composition is the polyphenylene sulfide resin composition containing inorganic particles, wherein the particle flatness of inorganic particles in the resin composition is 5-120 and the content of the inorganic particles is 5-80wt.%. The composition is molded to give a polyphenylene sulfide sheetlike material.