| 拉伸工艺对渔用聚乙烯纤维结构与性能的影响 |
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| 引用本文： | 闵明华,黄洪亮,刘永利,张勋,石建高,王鲁民.拉伸工艺对渔用聚乙烯纤维结构与性能的影响[J].水产学报,2015,39(10):1587-1592. |
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| 作者姓名： | 闵明华 黄洪亮 刘永利 张勋 石建高 王鲁民 |
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| 作者单位： | 中国水产科学院东海水产研究所,农业部东海与远洋渔业资源开发利用重点实验室, 上海 200090,中国水产科学院东海水产研究所,农业部东海与远洋渔业资源开发利用重点实验室, 上海 200090,中国水产科学院东海水产研究所,农业部东海与远洋渔业资源开发利用重点实验室, 上海 200090,中国水产科学院东海水产研究所,农业部东海与远洋渔业资源开发利用重点实验室, 上海 200090,中国水产科学院东海水产研究所,农业部东海与远洋渔业资源开发利用重点实验室, 上海 200090,中国水产科学院东海水产研究所,农业部东海与远洋渔业资源开发利用重点实验室, 上海 200090 |
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| 基金项目： | 国家科技支撑计划(2013BAD13B02,2013BAD13B03);国家自然科学基金(31302230);中国水产科学研究院基本科研业务费专项(2014A10YQ01);中央级公益性科研院所基本科研业务费专项(中国水产科学研究院东海水产研究所)(2012M02) |
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| 摘 要： | 为纺制高性能渔用聚乙烯纤维,实验以齐鲁石化生产的高密度聚乙烯为原料,进行螺杆挤出机熔融纺丝—多级热拉伸纺丝实验。结果显示,一级拉伸倍数为8.17倍时,聚乙烯纤维的断裂强度和结节强度分别为5.71和4.56 cN/dtex;当采用二级拉伸工艺,一级拉伸倍数8.17倍,总拉伸倍数为9.52倍时,所制备的渔用聚乙烯纤维的断裂强度和结节强度分别为7.91和5.24 cN/dtex,比现行国家标准中规定的聚乙烯单丝优等品指标高出41.3%和34.4%。研究表明,二级拉伸工艺可使聚乙烯大分子链在纤维中的排列更加规整,提高大分子链的取向度,制备的渔用聚乙烯纤维的综合渔用性能更好。随着总拉伸倍数的提高,聚乙烯纤维的断裂强度、声速取向和热性能均显著提高。随拉伸倍数提高,渔用聚乙烯纤维的结节强度呈现先升高后降低的趋势。
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| 关 键 词： | 渔用纤维 聚乙烯 熔融纺丝 拉伸 力学性能 |
| 收稿时间： | 2015/1/19 0:00:00 |
| 修稿时间： | 2015/6/26 0:00:00 |
Effect of draw process on the structure and properties of fishery polyethylene fibers |
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| MIN Minghu,HUANG Hongliang,LIU Yongli,ZHANG Xun,SHI Jiangao and WANG Lumin.Effect of draw process on the structure and properties of fishery polyethylene fibers[J].Journal of Fisheries of China,2015,39(10):1587-1592. |
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| Authors: | MIN Minghu HUANG Hongliang LIU Yongli ZHANG Xun SHI Jiangao and WANG Lumin |
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| Institution: | Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200092, China,Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200092, China,Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200092, China,Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200092, China,Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200092, China and Key Laboratory of East China Sea & Oceanic Fishery Resources Exploitation and Utilization, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200092, China |
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| Abstract: | High density polyethylene produced by Qilu Petrochemical Engineering Co.Ltd was melt-spun by screw extruder and then multi-step drawn at high temperature to fabricate high performance fishery PE fibers.It was showed that when the draw ratio was 8.17 in the one-step process,the breaking strength and knot strength of the PE fiber were 5.71cN/dtex and 4.56cN/dtex,respectively; but when the first and total draw ratio were 8.17 and 9.52 in the two-step process,the breaking strength and knot strength were 7.91cN/dtex and 5.24cN/dtex,which were 41.3% and 34.4% higher than the high-class products specified in the national standard,respectively.It was found that the PE fibers fabricated by two-step process showed more regular macromolecular chains,higher orientation and better fishery properties than those fabricated by one-step process.In addition,with the total draw ratio increased,the breaking strength,sound orientation and thermal properties were improved,but the knot strength increased first and subsequently decreased. |
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| Keywords: | fishery fiber polyethylene melt spinning drawing mechanical properties |
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