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Ultra-high-tenacity polyvinyl alcohol fiber and process for producing same
Ultra-high-tenacity polyvinyl alcohol fiber and process for producing same
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机译:超高强度聚乙烯醇纤维及其生产方法
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摘要
An ultra-high-tenacity multifilament fiber of polyvinyl alcohol having a degree of polymerization of at least 1500, said filament having a tensile strength of at least 12 g/d and an initial modulus greater than 280 g/d, which is produced by a process for producing an ultra-high-tenacity polyvinyl alcohol fiber which comprises the steps of dissolving polyvinyl alcohol having a degree of polymerization of at least 1500 in a solvent, dry- spinning the resulting polymer solution through a spinneret into an environment of air or inert gas, introducing the dry-spun filaments into a coagulating bath, and drawing the coagulated filaments at a total effective draw ratio of at least 20 times.
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机译:聚乙烯醇的超高强度复丝纤维,聚合度至少为1500,所述长丝的抗拉强度至少为12 g / d,初始模量大于280 g / d,由制备超高强度聚乙烯醇纤维的方法,该方法包括以下步骤:将聚合度为至少1500的聚乙烯醇溶解在溶剂中,将所得的聚合物溶液通过喷丝头干纺到空气或惰性环境中气体,将干纺长丝引入凝固浴中,并以至少20倍的总有效拉伸比拉伸凝固的长丝。
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