| 喷丝头长径比对PANCF原丝性能的影响 |
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| 作者单位： | |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，国家自然科学基金，上海市基础理论项目 |
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| 摘 要： | 采用不同长径比(L/D)的陶瓷喷丝头进行湿法、干湿法纺丝制备聚丙烯腈基碳纤维(PANCF);研究了L/D对聚丙烯腈/二甲基亚砜(PAN/DMSO)纺丝原液的可纺性及原丝性能的影响。结果表明:随着喷丝头L/D的增大,PAN/DMSO纺丝原液的可纺性提高,PANCF原丝的膨润度逐渐减少,PANCF原丝的结晶度、取向度及强度随之增大,有利于提高纤维的性能。
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| 关 键 词： | 聚丙烯腈基碳纤维 原丝 陶瓷 喷丝头 长径比 可纺性 膨润度 |
Effect of length-diameter ratio on properties of as-spun PANCF |
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| Abstract: | Ceramic spinnerets with different length-diameter ratio ( L/D ) were used to produce polyacrylonitrile-based carbon fiber (PANCF)via wet spinning process or dry-wet spinning process.The effect of L/D on the spinnability of polyacrylonitrile/ dimethyl sulphoxide (PAN/DMSO) spinning solution and the properties of as-spun fiber was studied.The results showed that the spinnability of PAN/DMSO spinning solution was increased,the swelling degree of PANCF was gradually decreased,the crystal-linity,orientation and strength of PANCF were increased as the spinneret L/D was increased. |
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| Keywords: | polyacrylonitrile-based carbon fiber as-spun fiber ceramic spinneret length-diameter ratio spinnability swelling degree |
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