高性能聚丙烯腈碳纤维中纳米级微孔分析表征研究  

Study on Nano-Scale Microvoid Characterization for Typical Carbon Fibers

作　　者：朱才镇[1,2] 郭靖[2] 刘小芳[2] 柴晓燕[1] 赵宁[2] 刘剑洪[1] 徐坚[2] 

机构地区：[1]深圳市功能高分子重点实验室,深圳大学化学与化工学院,深圳518060 [2]高分子物理与化学实验室,中国科学院化学研究所,北京100190

出　　处：《高分子通报》2014年第2期117-121,共5页Polymer Bulletin

基　　金：973项目(2011CB605604);国家自然科学基金(21304059;10979006;10835008);科技部创新方法专项(2011IM030400);中科院创新工程(KJCX2-YW-N39);山东省泰山学者计划;广东省博士启动基金(S2013040015706);深圳市功能高分子重点实验室开放基金(FP20130005);深圳大学基础研究项目(201204);深圳市基础研究项目(JCYJ20120614085820810)

摘　　要：高性能碳纤维由于其优异的性能,在各行各业中具有广泛应用。为深入研究碳纤维内结构与其性能之间的相关性,本文应用小角X射线散射研究了一系列典型的聚丙烯腈碳纤维样品,分析了样品内微孔的尺寸及取向,讨论了强度和模量与微孔的相关性,研究结果表明:高性能碳纤维的力学强度和模量与碳纤维内微孔缺陷的长度和长径比有关,控制碳纤维内微孔缺陷的长度有望实现高强碳纤维的制备,控制牵伸倍率从而控制碳纤维内微孔的长径比有望实现高模碳纤维的制备。Toray Industries, INC supplies the most superior carbon fiber in the world, including the highest strength and modulus. In the present research, a series of carbon fiber from Toray Industries, INC was studied by small angle X-ray scattering, from which the size and orientation of microvoids in carbon fiber was analyzed in detail. The results shown that the performance of carbon fiber was related to microvoids in it, the size of the microvoids has an effect on the strength while its aspect ratio regulated the modulus. The bigger the mierovoid in carbon fiber was, the weaker the carbon fiber was. The greater the aspect ratio of microvoids was, the higher the modulus was.

关 键 词：碳纤维 小角X射线散射 微孔 

分 类 号：TQ340.1[化学工程—化纤工业]