热致性液晶聚芳酯纤维的制备与结构研究The Preparation and Structure Analysis of Thermotropic Liquid-Crystalline Polyarylate Fiber
陈玉伟,魏朋,王依民,王心航,甘海啸,倪建华
CHEN Yu-wei1,WEI Peng1,WANG Yi-min1,2,WANG Xi-hang1,GAN Hai-xiao3
摘要(Abstract):
介绍了利用低分子质量和高分子质量热致性液晶聚芳酯(TLCP),通过熔融纺丝制备TLCP初生纤维的加工工艺及后处理方法,分析了纺丝过程中TLCP熔体在喷丝板下方的形变过程,并通过扫描电镜、广角X-射线衍射仪、纤维强度仪对TLCP纤维的结构和性能进行表征,为热致性TLCP纤维的工业化提供了可靠的工艺参数。
The preparation and post-treatment of thermotropic liquid-crystalline polyarylate(TLCP) fiber with low and high molecular weight were introduced.The deformation of TLCP melt at the bottom of spinneret during the spinning was analyzed.Fiber's mechanical properties and crystal properties after thermal treatment were studied with the help of scanning electron microscope,X-ray diffraction and fiber-strength instrument.These researches would be valuable for the commercial production of polyarylate fiber.
关键词(KeyWords):
热致性聚芳酯;纺丝工艺;后处理;力学性能
thermotropic liquid-crystalline polyarylate,spinning process,post-treatment,mechanical property
基金项目(Foundation):
作者(Author):
陈玉伟,魏朋,王依民,王心航,甘海啸,倪建华
CHEN Yu-wei1,WEI Peng1,WANG Yi-min1,2,WANG Xi-hang1,GAN Hai-xiao3
DOI: 10.16090/j.cnki.hcxw.2012.09.005
参考文献(References):
- [1]甘海啸.热致性液晶聚芳酯的制备与热处理[J].合成纤维,2011,40(5):1-4.
- [2]钦维民.高性能聚芳酯纤维的研制和表征[J].合成纤维,2012,41(4):1-3.
- [3]Gordon W Calundann,Herbert L Davis,Frederick J Gorman,et al.Melt processable thermotropic wholly aromatic polyester:US,4083829[P].1978.
- [4]Jennifer E Taylor,Angel Romo-Uribe,Matthew R Libera.Molecularorientation gradients in thermotropic liquid crystalline fiber[J].Polymersfor Advanced Technologies,2003,14:595-600.
- [5]韩式方.各向异性非牛顿流体连续介质力学——液晶高分子流变学[M].北京:科学出版社,2008:5-6.
- [6]Sauer BB,Kampert WG.Thermal and morphological properties ofmain chain liquid crystalline polymers[J].Polymer,2003,44:2 721-2 738.
- [7]Cohen EK,Marom G.Microstructure and nematic transition inthermotropic liquid crystalline fibers and their single polymer composiyes[J].Polymer Advance Technology,2007,18:771-779.
- [8]江昆华,罗传秋,周啸.聚合物近代仪器分析[M].北京:清华大学出版社,2000:31.
- 热致性聚芳酯
- 纺丝工艺
- 后处理
- 力学性能
thermotropic liquid-crystalline polyarylate,spinning process,post-treatment,mechanical property