| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-fused laminate which is composed of a biaxially oriented PPS film and a fiber sheet of an aromatic polymer with no intervening adhesive layer, has superior heat and environmental resistances, mechanical strengths and insulation, makes compatible improvement of interlayer adhesiveness and achievement of high heat and environmental resistances at a level of the heat resistance class H, with the compatibility having been a conventional subject, and is useful as a high-functional electrical insulating material imparted with high insulating, processability and varnish impregnability. SOLUTION: The laminate consists of a biaxially oriented polyphenylene sulfide film layer (layer A) and a fiber sheet layer (layer B) composed of an aromatic polymer having no melting point and laminated on at least one side of the layer A with no intervening adhesive layer. Taking the thickness of the layer A as aμm and that of the layer B as bμm, the thickness ratio the constituent layers of the laminate, a/b, is 0.25-5.00. The layer A has a relative crystallization index, measured by the wide-angle X-ray diffraction method, of 5-30 and degrees of orientation, measured in both the Edge and End directions, of 0.15-0.60 each. COPYRIGHT: (C)2011,JPO&INPIT |
