公开(公告)号：US5925276A

公开(公告)日：1999-07-20

申请号：US471893

申请日：1995-06-07

申请人： Neville S. Batliwalla ,  Arthur F. Emmett ,  Brian S. Larkin

发明人： Neville S. Batliwalla ,  Arthur F. Emmett ,  Brian S. Larkin

IPC分类号： H01C7/02 ,  H05B3/14 ,  H05B3/56 ,  H05B3/00

CPC分类号： H05B3/146 ,  H01C7/027 ,  H05B3/56 ,  H05B2203/02

摘要： A melt-extrudable conductive polymer composition which contains a polymer, a particulate conductive filler, and a particulate nonconductive filler. When a standard strip heater is made from the composition and tested in a UL VW-1 test, it has comparable performance to a heater made from a second composition which is the same as the composition but which does not contain the nonconductive filler. When tested in a standard arcing fault test, the standard heater will trip a fuse in less time than is required by the second heater, i.e. in less than 30 seconds. In some embodiments, the composition also comprises a flame retardant, preferably a halogenated flame retardant. When strip heaters prepared from these compositions are tested in a standard arc propagation test, an arc will not propagate. A preferred nonconductive filler is Sb.sub.2 O.sub.3.

摘要翻译： 一种可熔融挤出的导电聚合物组合物，其包含聚合物，颗粒状导电填料和颗粒非导电填料。 当标准条形加热器由组合物制成并在UL VW-1试验中测试时，其与由与组合物相同但不含非导电填料的第二组合物制成的加热器具有可比性能。 当在标准电弧故障测试中进行测试时，标准加热器将在比第二加热器要求的时间更短的时间内，即在不到30秒内跳闸保险丝。 在一些实施方案中，组合物还包含阻燃剂，优选卤代阻燃剂。 当在标准电弧传播试验中测试从这些组合物制备的条形加热器时，电弧不会传播。 优选的非导电填料是Sb2O3。