A semiconductive rubber foam having a volume resistivity that can be controlled to a practical level and retaining an initial softness even after the lapse of time, is obtained by foaming and curing a rubber composition comprising 100 parts by weight of a chlorinated ethylene/α-olefin copolymer rubber and 10 to 50 parts by weight of carbon black. The volume resistivity of this semiconductive rubber foam is in the range of from 10⁵ to 10¹¹ Ω-cm.
一种体积电阻率可控制在实用
水平、即使经过一段时间后仍能保持初始柔软度的半导电橡胶泡沫,是通过发泡和固化一种橡胶组合物而获得的,该组合物由 100 份(重量)
氯化
乙烯/α-烯烃共聚物橡胶和 10 至 50 份(重量)
炭黑组成。这种半导体橡胶泡沫的体积电阻率范围为 10⁵ 至 10¹¹ Ω-cm。