碱处理对PTT纤维形态结构和力学性能的影响  

Effect of alkali treatment on morphological structure and mechanical properties of PTT fiber

作　　者：郑今欢[1] 殷瑛[1] 关艳锋[1] 邵建中[1] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,浙江杭州310018

出　　处：《纺织学报》2006年第12期44-47,共4页Journal of Textile Research

基　　金：浙江省自然科学基金资助项目(Y404387);浙江省科技厅重大攻关项目(2005C11028-03)

摘　　要：通过SEM观察及失重率、拉伸曲线和弹性回复率等指标的测定,研究了碱处理对PTT、PET等纤维形态结构特征和力学性能的影响。结果表明:高温碱处理可使PTT纤维表面出现明显的微坑穴,对其力学性能的损伤比室温碱处理明显增大;在室温下,PET纤维的耐碱性优于PTT纤维;高温下,PTT纤维的耐碱性优于PET纤维;在合适的温度和浓度下,PTT纤维可以安全地经受碱液的作用,能维持良好的力学性能。This paper studied the effect of alkali treatment on morphological structure and mechanical properties of PTT, PET fiber through SEM, loss of weight, tensile curve and resilient-elasticity recovery. The experiment results show that high-temperature alkali treatment can make surface of PTY fiber dissolve to form a lot of micro-holes, and bring about much more loss of mechanical properties than room-temperature alkali treatment. Alkali resistance of PET fiber is superior to that of PTT fiber in room-temperature, but in hightemperature alkali resistance of PTT fiber is superior to that of PET fiber. Through alkali treatment in appropriate temperature and concentration, PTT fiber can maintain high mechanical properties.

关 键 词：碱处理 PTT纤维 形态结构 力学性能 PET纤维 

分 类 号：TQ342.2[化学工程—化纤工业]