Electrically insulating film backing
    24.
    发明授权
    Electrically insulating film backing 失效
    电绝缘膜背衬

    公开(公告)号:US5284889A

    公开(公告)日:1994-02-08

    申请号:US979620

    申请日:1992-11-20

    Abstract: An electrically insulating film having a total halogen content of about 1% to about 8%, comprising a resin component containing:a) from 0 to about 40 parts of a rubber selected from EP or EPDM rubber,b) correspondingly, from about 60 to about 100 parts of an ethylene vinyl acetate polymer,c) from about 20% to about 40% based on said resin component, of a flame retardant system comprisingi) from about 5 to about 25% of a bromine containing flame retardant,ii) from about 1.5% to about 10% of an antimony containing flame retardant, andiii) from 1% to about 20% of a flame retardant selected from granular metal oxide hydrates, wherein said flame retardant system has a ratio of metal oxide hydrate to bromine of no more than about 3;said film being free of vinyl chloride wherein a nonoriented film self-extinguishes in less than about 5 seconds, has an elongation at break of at least about 500%, a dielectric strength of at least about 1200 V/Mil, and a stress-strain curve having a wholly positive slope.

    Abstract translation: 总卤素含量为约1%至约8%的电绝缘膜,包含树脂组分,其含有:a)0至约40份选自EP或EPDM橡胶的橡胶,b)相应地,约60至 约100份乙烯乙酸乙烯酯聚合物,c)基于所述树脂组分约20%至约40%的阻燃体系,其包含i)约5至约25%的含溴阻燃剂,ii) 约含有锑的阻燃剂的约1.5%至约10%,以及iii)1%至约20%的选自颗粒状金属氧化物水合物的阻燃剂,其中所述阻燃体系具有金属氧化物水合物与溴的比例 不超过3; 所述膜不含氯乙烯,其中非取向膜在约5秒钟内自熄,断裂伸长率为至少约500%,介电强度为至少约1200V / mil,应力应变 曲线具有完全正斜率。

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