Polyester resin composition, switch made from the same, and method of
producing the switch
    2.
    发明授权
    Polyester resin composition, switch made from the same, and method of producing the switch 失效
    聚酯树脂组合物,由其制成的开关以及开关的制造方法

    公开(公告)号:US6046258A

    公开(公告)日:2000-04-04

    申请号:US68405

    申请日:1998-05-08

    摘要: A polyester resin composition comprising 21-29% by weight of a resin component consisting of fumaric acid neopentyl glycol propylene glycol type polyester and cumene hydroperoxide as a hardening agent; 52-60% by weight of one or more kinds of inorganic compounds which undergo dehydration reaction at a temperature not later than 150.degree. C. as an inorganic filler; and 15-23% by weight of a reinforcing material. The composition of the present invention when used for an insulation component member of a switch, improves the insulation property after the cut-off of a large electric current. More specifically, the composition of the present invention can prevent the formation of the resin skin layer on the surface of the molded product, so that the inorganic compound which can be decomposed by the heat from the electric arc to produce a gas which changes the free carbon and metal vapor to nonconductive oxides can be present in the surface layer of the molded product and the insulation property can be secured even after the cut-off of the electric current.

    摘要翻译: PCT No.PCT / JP97 / 00404 Sec。 371日期1998年5月8日 102(e)日期1998年5月8日PCT提交1997年2月14日PCT公布。 第WO98 / 36028号公报 日本1998年8月20日一种聚酯树脂组合物,其包含21-29重量%的由富马酸新戊二醇丙二醇型聚酯和枯烯氢过氧化物组成的树脂组分作为硬化剂; 52-60重量%的一种或多种在不低于150℃的温度下进行脱水反应的无机化合物作为无机填料; 和15-23重量%的增强材料。 当用于开关的绝缘构件时,本发明的组合物提高了截止大电流之后的绝缘性能。 更具体地说,本发明的组合物可以防止在模制品的表面上形成树脂表皮层,从而可以通过电弧分解的无机化合物产生改变自由的气体 碳和金属蒸汽与非导电氧化物可以存在于模制产品的表面层中,并且即使在电流截止之后也可以确保绝缘性能。