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1. 发明申请

WO2017199060A1 FIRE RESISTANT CABLE WITH CERAMIFIABLE LAYER 审中-公开
标题翻译：耐腐蚀电缆与CERAMIFIABLE层
公开(公告)号：WO2017199060A1
公开(公告)日：2017-11-23
申请号：PCT/IB2016/052864
申请日：2016-05-17
申请人： PRYSMIAN S.P.A.
发明人： SCRIMA, Vito , TOSI, Fabio , ANDREOLETTI, Marco , CASTELLI, Carlo
IPC分类号： H01B7/295
摘要： A fire resistant cable comprising: a conducting element (2; 21); a layer, surrounding the conducting element, made of a ceramifiable composition comprising: - a thermoplastic polymer mixture comprising: (a) a copolymer of ethylene with a C 4 -C 12 alpha-olefin, having a density of from 0.860 to 0.910 g/cm 3 , a melt flow index not higher than 3 g/10 min and a melting point of 105°C at most; (b) an ethylene homopolymer or copolymer of ethylene with a C 4 -C 12 alpha-olefin, having a density of from 0.900 to 0.985 g/cm 3 , a melt flow index not higher than 5 g/10 min and a melting point of at least 110°C; and (c) a polyethylene grafted with an ethylenically unsaturated monomer; - at least 25 wt% of silica; - a fluxing agent selected from alkaline metal oxides or precursors thereof; - an inorganic hydroxide compound selected from magnesium hydroxide, aluminium hydroxide and mixtures thereof; - a stabilizing agent comprising a hydrated magnesium silicate in an amount of at least 5 wt%; weight percentages being based on the total weight of the ceramifiable composition. Upon exposure to elevated temperatures such as those encountered in case of fire, the ceramifiable composition is transformed into a ceramic material capable of protecting the conducting element from fire and mechanical stresses. The fire resistant cable of the present invention can continue operating under fire conditions for a certain period of time.
摘要翻译：一种耐火电缆，其包括：导电元件（2; 21）;和导电元件（2; 21）。围绕导电元件的由陶瓷组合物制成的层，所述组合物包含： - 热塑性聚合物混合物，其包含：（a）乙烯与C 4 -C 12 - α-烯烃，其密度为0.860-0.910克/立方厘米，熔体流动指数不高于3克/ 10分钟，熔点最高为105℃; （b）乙烯均聚物或乙烯与C 4 -C 12α-烯烃的共聚物，其密度为0.900-0.985g / cm 3 熔体流动指数不高于5克/ 10分钟且熔点至少为110℃; 和（c）用烯键式不饱和单体接枝的聚乙烯; - 至少25重量％的二氧化硅; - 选自碱金属氧化物或其前体的助熔剂; - 选自氢氧化镁，氢氧化铝及其混合物的无机氢氧化物化合物; - 包含至少5重量％的水合硅酸镁的稳定剂; 重量百分比基于可陶瓷化组合物的总重量。当暴露于升高的温度（例如遇火情况下）时，可陶瓷化组合物被转变成能够保护导电元件免受火灾和机械应力的陶瓷材料。本发明的耐火电缆可以在火灾条件下持续运行一段时间。

2. 发明授权

EP3459086B1 FIRE RESISTANT CABLE WITH CERAMIFIABLE LAYER 有权
公开(公告)号：EP3459086B1
公开(公告)日：2020-03-18
申请号：EP16729062.6
申请日：2016-05-17
申请人： Prysmian S.p.A.
发明人： SCRIMA, Vito , TOSI, Fabio , ANDREOLETTI, Marco , CASTELLI, Carlo
IPC分类号： H01B7/295

3. 发明公开

EP3459086A1 FIRE RESISTANT CABLE WITH CERAMIFIABLE LAYER 有权
公开(公告)号：EP3459086A1
公开(公告)日：2019-03-27
申请号：EP16729062.6
申请日：2016-05-17
申请人： Prysmian S.p.A.
发明人： SCRIMA, Vito , TOSI, Fabio , ANDREOLETTI, Marco , CASTELLI, Carlo
IPC分类号： H01B7/295
摘要： A fire resistant cable comprising: a conducting element (2; 21); a layer, surrounding the conducting element, made of a ceramifiable composition comprising: - a thermoplastic polymer mixture comprising: (a) a copolymer of ethylene with a C4-C12 alpha-olefin, having a density of from 0.860 to 0.910 g/cm3, a melt flow index not higher than 3 g/10 min and a melting point of 105°C at most; (b) an ethylene homopolymer or copolymer of ethylene with a C4-C12 alpha-olefin, having a density of from 0.900 to 0.985 g/cm3, a melt flow index not higher than 5 g/10 min and a melting point of at least 110°C; and (c) a polyethylene grafted with an ethylenically unsaturated monomer; - at least 25 wt% of silica; - a fluxing agent selected from alkaline metal oxides or precursors thereof; - an inorganic hydroxide compound selected from magnesium hydroxide, aluminium hydroxide and mixtures thereof; - a stabilizing agent comprising a hydrated magnesium silicate in an amount of at least 5 wt%; weight percentages being based on the total weight of the ceramifiable composition. Upon exposure to elevated temperatures such as those encountered in case of fire, the ceramifiable composition is transformed into a ceramic material capable of protecting the conducting element from fire and mechanical stresses. The fire resistant cable of the present invention can continue operating under fire conditions for a certain period of time.

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