-
公开(公告)号：EP0992531B1
公开(公告)日：2005-03-16
申请号：EP98928528.3
申请日：1998-06-17
CPC分类号： C08J5/18 , C08J2345/00 , C08J2365/00 , H01G4/18 , H01G4/206 , Y10T428/25 , Y10T428/252 , Y10T428/258 , Y10T428/26 , Y10T428/31 , Y10T428/31678 , Y10T428/31692 , Y10T428/31696 , Y10T428/31855 , Y10T428/31931
摘要： A polymer film which has a dielectric loss tangent of 0.002 or less as measured within the frequency range of 1 kHz to 1 GHz at 25 °C. When this film is used in a capacitor, the size of the capacitor can be reduced further and the capacitance of the capacitor can be increased further, because the heat build up due to dielectric loss can be reduced and the temperature rise can be suppressed. The use of a polymer film having a coefficient of friction of 1 or less against another film of the same material serves to prevent the occurrence of such a trouble that the film is liable to be cut or entangled in the rewinding step. Therefore, this film has an excellent performance as an insulating film having a low dielectric loss tangent and is free from the occurrence of such a trouble that it is liable to be cut or entangled in the rewinding step. Thus the polymer film is suitable for film capacitors.
-
公开(公告)号：EP0992531A1
公开(公告)日：2000-04-12
申请号：EP98928528.3
申请日：1998-06-17
CPC分类号： C08J5/18 , C08J2345/00 , C08J2365/00 , H01G4/18 , H01G4/206 , Y10T428/25 , Y10T428/252 , Y10T428/258 , Y10T428/26 , Y10T428/31 , Y10T428/31678 , Y10T428/31692 , Y10T428/31696 , Y10T428/31855 , Y10T428/31931
摘要： By using a polymeric film having a dielectric loss tangent of 0.002 or less measured at a frequency in the range of 1 kHz to 1 GHz at a temperature of 25°C, heat generation of dielectric loss of capacitors can be reduced and rising of temperature can be inhibited, and, can be highly stand the rise of temperature, whereby further miniaturization and increase in capacity of capacitors become possible.
Furthermore, the problems in handling that the films are apt to cut or become entangled at the rewinding step can be greatly improved by using polymeric films which are 1 or less in friction coefficient between the films of the same material.
Accordingly, the polymeric films of the present invention are excellent in performance of insulator film, namely, small in dielectric loss tangent, and, moreover, are free from the problems in handling that the films are apt to cut or become entangled at the rewinding step.
Furthermore, the polymeric films of the present invention are suitable for film capacitors.摘要翻译： 通过使用在25℃的温度下在1kHz〜1GHz的频率下测定的介电损耗角正切为0.002以下的聚合物膜，可以减少电容器的介电损耗的发热，并且可以使温度上升 被抑制，并且可以高度地承受温度的升高，从而电容器的进一步的小型化和容量的增加成为可能。 此外，通过使用相同材料的膜之间的摩擦系数为1以下的聚合物膜，可以大大提高处理在回绕步骤中易于切割或变得缠结的问题。 因此，本发明的聚合物膜的绝缘膜的性能优异，即介电损耗角正切较小，此外，在回卷工序中，薄膜易于切断或缠结的问题， 。 此外，本发明的聚合物膜适用于薄膜电容器。
-
搜索结果
2 条记录 (耗时 0.009 秒)
