中国塑料2017，Vol.31Issue(6)：16-21,6.DOI:10.19491/j.issn.1001-9278.2017.06.003
聚对苯二甲酰己二胺湿热老化行为研究
Hygrothermal Aging Behaviors of Poly(hexamethylene terephthalamide)
摘要
Abstract
A hygrothermal aging experiment was conducted for polyhexamethylene terephthalamide (PA6T)at 20,90 and 150 ℃,and effect of aging time on physical and mechanical properties of PA6T specimens was investigated.The results indicated that water absorption of PA6T increased with an increase of aging time,and its diffusion coefficient and equilibrium moisture absorption were also improved as the aging temperature increased.There was no change in intrinsic viscosity observed from of PA6T specimens at 20 and 90 ℃.However,the intrinsic viscosity decreased evidently at 150 ℃because of the hydrolysis of PA6T.The impact strength of PA6T was enhanced due to the increase of activity of its molecular chains.Furthermore,hydrogen bonding between water and amide groups led to an increase in tensile modulus.关键词
聚对苯二甲酰己二胺/湿热老化/力学性能Key words
poly(hexamethylene terephthalamide)/hygrothermal aging/mechanical property分类
化学化工引用本文复制引用
罗晓玲,王钊,张美林,王孝军,龙盛如,杨杰..聚对苯二甲酰己二胺湿热老化行为研究[J].中国塑料,2017,31(6):16-21,6.基金项目
国家自然科学基金(51573103,21274094,21304060),有机无机复合材料国家重点实验室开放课题(oic-201701006) （51573103,21274094,21304060）
