Biaxially Oriented Polyarylene Sulfide Film and Laminated Polyarylene Sulfide Sheets Comprising the Same

Abstract

A biaxially oriented polyarylene sulfide film and laminated polyarylene sulfide sheets of the film contain 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.

1 . 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 elongation at break of 80 to 250% in the other direction.  
     
     
         2 . The biaxially oriented polyarylene sulfide film according to  claim 1 , wherein the polyarylene sulfide is polyphenylene sulfide.  
     
     
         3 . The biaxially oriented polyarylene sulfide film according to  claim 1 , wherein the thermoplastic resin A is at least one kind of polymer selected from polyamide, polyether imide, polyether sulfone and polysulfone.  
     
     
         4 . The biaxially oriented polyarylene sulfide film according to  claim 1 , wherein the crystal melting heat quantity of the polyarylene sulfide is 20 to 45 (J/g).  
     
     
         5 . The biaxially oriented polyarylene sulfide film according to  claim 1 , wherein the primary dispersion peak temperature at loss tangent of dynamic viscoelasticity at a frequency of 1 Hz is 100 to 135° C.  
     
     
         6 . A laminated polyarylene sulfide sheet wherein at least one of the outermost layers is a laminated polyarylene sulfide sheet, and the outermost layer is a biaxially oriented polyarylene sulfide film layer (layer a) containing polyarylene sulfide and other thermoplastic resin A different from the polyarylene sulfide, and the contents of the polyarylene sulfide and the thermoplastic resin A in the layer 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 in the layer a and the resin A forms a dispersed phase with an average particle diameter of 10 to 500 nm and the laminated polyarylene sulfide sheet exhibits a tensile elongation at break of 80 to 250% in both the longitudinal direction and width direction.  
     
     
         7 . The laminated polyarylene sulfide sheet according to  claim 6 , wherein the polyarylene sulfide is polyphenylene sulfide.  
     
     
         8 . The laminated polyarylene sulfide sheet according to  claim 6 , wherein the thermoplastic resin A is at least one kind of polymer selected from the group consisting of polyamide, polyether imide, polyether sulfone and polysulfone.  
     
     
         9 . The laminated polyarylene sulfide sheet according to  claim 6 , wherein the tensile elongation at break in at least one of the longitudinal direction and width direction is 110 to 250%.  
     
     
         10 . The laminated polyarylene sulfide sheet according to  claim 6 , wherein the thickness of a layer other than the outermost layer is 2% to 30% based on the total thickness of the sheet.  
     
     
         11 . The laminated polyarylene sulfide sheet according to  claim 6 , which comprises a non-oriented polyarylene sulfide film layer (layer b) as a layer other than the outermost layer.  
     
     
         12 . The laminated polyarylene sulfide sheet according to  claim 6 , which comprises a copolymerized polyphenylene sulfide film layer (layer c) as a layer other than the outermost layer.