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1. 发明授权

US4370076A Transportation systems and electric cables for use therein 失效
标题翻译：运输系统和电缆用于其中
公开(公告)号：US4370076A
公开(公告)日：1983-01-25
申请号：US123433
申请日：1980-02-21
申请人： Thomas Sullivan , James E. Braddock
发明人： Thomas Sullivan , James E. Braddock
IPC分类号： H01B3/44 , H01B7/29 , H01B3/10
CPC分类号： H01B3/448 , H01B7/292 , Y10T428/2958 , Y10T428/296
摘要： A composition of high oxygen index that yields little visible smoke and little or no corrosive fume on combustion and having adequate mechanical and electrical properties for cable jackets and bedding comprises;20-35 parts of ethylene-vinyl acetate copolymer;52-75 parts of an alumina trihydrate with at least half its weight in particles with a diameter in the range 0.5-3.0 micrometer;up to 3 parts of stearic acid or a stearate; andat least one antioxidant and if desired at least one curing agent in effective amounts not exceeding 4 parts in all.A double-layer of aromatic polyimide tape, the first layer helically lapped and the second preferably longitudinally applied, is interposed between a bedding an a jacket both of the above composition to give a superior low-smoke cable for use in tunnels of railroads or other transportation systems.
摘要翻译：高氧指数的组合物几乎不产生可见的烟雾，燃烧时几乎没有或没有腐蚀性烟雾，并且对电缆护套和床上用品具有足够的机械和电气性能; 20-35份乙烯 - 乙酸乙烯酯共聚物; 52-75份具有直径在0.5-3.0微米范围内的颗粒的至少一半重量的三水合氧化铝; 最多3份硬脂酸或硬脂酸酯; 和至少一种抗氧化剂，如果需要，全部有效量不超过4份的至少一种固化剂。将双层芳族聚酰亚胺胶带，螺旋状重叠的第一层和优选纵向涂布的第二层被插入到两个上述组合物的衬垫和夹套之间，以产生用于铁路或其它隧道的优良低烟电缆交通系统

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