发明授权
- 专利标题： Electric cables which contain insulations based on ethylene polymers having high resistance to the formation of water trees
- 专利标题（中）： 包含基于乙烯聚合物的绝缘材料的电缆具有高的耐水性
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申请号： US349761申请日： 1989-05-10
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公开(公告)号： US4997713A公开(公告)日： 1991-03-05
- 发明人: Ernst Koehnlein , Johannes Schlag , Heinz Vogt , Peter Bauer , Alfred F. Hauss
- 申请人： Ernst Koehnlein , Johannes Schlag , Heinz Vogt , Peter Bauer , Alfred F. Hauss
- 专利权人： Ernst Koehnlein,Johannes Schlag,Heinz Vogt,Peter Bauer,Hauss Alfred F
- 当前专利权人： Ernst Koehnlein,Johannes Schlag,Heinz Vogt,Peter Bauer,Hauss Alfred F
- 优先权： DEX3816397 19880513
- 主分类号： C08L23/08
- IPC分类号： C08L23/08 ; H01B3/44 ; H01B7/28 ; H01B7/282
摘要：
In an electric high voltage cable of 1-500 kV, the cable insulation is resistant to the formulation or the growth of water trees and consists of from 70 to 99 parts by weight of an ethylene polymer (I) and from 1 to 30 parts by weight of an ethylene copolymer (II) which is composed of from 80 to 92% by weight of ethylene and from 8 to 20% by weight of a C.sub.4 -C.sub.10 -.alpha.-olefin having a density of from 0.890 to 0.915 g/cm.sup.3 and a crystallite melting point of from 90.degree. to 125.degree. C.
公开/授权文献
- US4416021A X-Ray examination apparatus 公开/授权日：1983-11-15