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Stretch-formed sheet of ultra-high molecular weight polyolefin having excellent transparency and mechanical properties, and production method thereof
Stretch-formed sheet of ultra-high molecular weight polyolefin having excellent transparency and mechanical properties, and production method thereof
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机译:具有优异的透明性和机械性能的超高分子量聚烯烃拉伸成型片及其制造方法
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摘要
To provide a stretch-formed sheet of ultra-high molecular weight polyolefin having excellent transparency and mechanical properties, while being relatively thick. A stretch-formed sheet of ultra-high molecular weight polyolefin having a thickness of 0.2 mm or greater and having an internal haze of 70% or less in the direction of the thickness, is prepared by stretching at least in one direction a formed article of ultra-high molecular weight olefin having a density of 925 kg/m3 or less and containing a polymer of ultra-high molecular weight polyolefin having an intrinsic viscosity of 7 dl/g or greater as measured in a 135° C. decalin solution, at a temperature of less than the melting point (Tm) of the ultra-high molecular weight polyolefin and at ordinary temperature or higher.
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机译:提供一种超高分子量聚烯烃的拉伸成形片,其具有优异的透明性和机械性能,同时相对较厚。通过至少在一个方向上拉伸成型的制品,制备厚度为0.2mm以上且内部雾度在厚度方向上为70%以下的超高分子量聚烯烃拉伸成型片。密度小于或等于925 kg / m 3 Sup>的超高分子量烯烃,并含有一种特性粘度为7 dl / g或更高的超高分子量聚烯烃聚合物。在小于超高分子量聚烯烃的熔点(Tm)的温度下且在常温或更高温度下为135℃的十氢化萘溶液。
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