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Optical fiber cable having dripless, non-bleeding and optical fiber coating-compatible waterblocking material in core thereof
Optical fiber cable having dripless, non-bleeding and optical fiber coating-compatible waterblocking material in core thereof
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机译:在其芯中具有无滴,不渗漏且与光纤涂层兼容的阻水材料的光缆
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摘要
An optical fiber cable (20) includes a core which (22) is filled with a filling material (26) comprising a composition of matter which passes industry wide drip tests, which substantially has no oil separation and which has excellent thermal oxidative stability. The filling composition includes a relatively high molecular weight aliphatic hydrocarbon which may be a polyalphaolefin, for example, or a relatively high molecular weight mineral oil. Also included in the composition of the filling material is a fumed silica, a block copolymer and a relatively high amount of an antioxidant system. Swelling of coating materials for optical fibers (25,25) which are relatively soft and which are in contact with the filling material is substantially less than that experienced with prior art filling materials. Because of the inclusion of a low pour point aliphatic hydrocarbon in the filling material, the cable provides excellent optical performance at low temperatures.
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