A biaxially oriented polyarylene sulfide film excellent in molding processability and a laminated polyarylene sulfide sheet comprising the same can be provided by improving the tensile elongation at break of a biaxially oriented polyarylene sulfide film having excellent heat resistance, dimensional stability, electrical properties and chemical resistance. Disclosed is a biaxially oriented polyarylene sulfide film comprising polyarylene sulfide and other thermoplastic resin A different from the polyarylene sulfide, wherein the contents of the polyarylene sulfide and the thermoplastic resin A are 70 to 99 parts by weight and 1 to 30 parts by weight respectively when the total amount of the polyarylene sulfide and the thermoplastic resin A is taken as 100 parts by weight and the resin thermoplastic A forms a dispersed phase with an average particle diameter of 10 to 500 nm and the biaxially oriented polyarylene sulfide film exhibits a tensile elongation at break of 110 to 250% in at least one of the longitudinal direction and width direction and a tensile fracture elongation of 80 to 250% in the other direction.
通过提高双轴取向聚芳基
硫醚薄膜的断裂拉伸伸长率,可提供一种成型加工性极佳的双轴取向聚芳基
硫醚薄膜以及由其构成的层压聚芳基
硫醚片材,该薄膜具有极佳的耐热性、尺寸稳定性、电性能和耐
化学性。本发明公开了一种双轴拉伸聚芳基
硫醚薄膜,由聚芳基
硫醚和不同于聚芳基
硫醚的其他热塑性
树脂 A 组成、其中,当聚芳基
硫醚和热塑性
树脂 A 的总量为 100 份时,聚芳基
硫醚和热塑性
树脂 A 的含量分别为 70 至 99 份(按重量计)和 1 至 30 份(按重量计),热塑性
树脂 A 形成分散相,其平均颗粒直径为 10 微米。双轴取向聚芳基
硫醚薄膜在纵向和宽度方向中至少一个方向上的拉伸断裂伸长率为 110% 至 250%,在另一个方向上的拉伸断裂伸长率为 80% 至 250%。