PET／SiO2纳米复合纤维的力学性能和微观结构  

Mechanical Properties and Microstructure of PET/SiO_2 Nanocomposites Fiber

作　　者：张献[1] 田兴友[1,2] 郑瑾[1] 姚霞银[1] 刘文涛[3] 崔平[1,2] 李勇[1,2] 

机构地区：[1]中国科学院固体物理研究所材料物理重点实验室,安徽合肥230031 [2]中国科学院宁波材料技术与工程研究所,浙江宁波315201 [3]郑州大学材料科学与工程学院,河南郑州450052

出　　处：《高分子材料科学与工程》2009年第4期55-57,共3页Polymer Materials Science & Engineering

基　　金：国家支撑计划(2007BAE22B03);宁波市自然科学基金资助项目(2006A610067);宁波市科技攻关项目资助项目(2006B100062)

摘　　要：考察了纳米SiO2对PET纤维力学性能的影响,并采用WAXD、FT-IR、DSC、双折射等手段对纤维的微观结构进行了表征。研究表明,纳米SiO2的加入提高了PET纤维的力学性能,且PET/SiO2纳米复合纤维在结晶度略有降低的情况下,非晶区取向度明显提高。非晶区取向度的提高是PET/SiO2纤维力学性能提高的根本原因。The influence of SiO2 nanoparticles on the mechanical properties of PET fiber was investigated and the structure was studied using the methods of WXD, DSC, FT-IR, Birefringence measurements, etc. The results show that mechanical properties of PET fiber are improved through SiO2 incorporation. The amorphous orientation factor of PET/SiO2（PETS） fiber is higher than that of pure PET （PET0） fiber, while the crystallinity is slightly lower than PET0 fiber. It is suggested that the increase of amorphous orientation factor contributes to the improvement of mechanical properties of PET fiber. The results of FT-IR indicate that incorporation of nano-SiO2 improves the orientation degree of PET resin by in-situ polymerization, and macromoleeular chains are easier to parallel orient during spin-draw processing, which contributes to the increase of amorphous orientation of PETS fiber. Thus, mechanical properties of PETS fiber are improved.

关 键 词：纳米复合纤维 聚对苯二甲酸乙二酯 模量 非晶区取向度 

分 类 号：TB383[一般工业技术—材料科学与工程]