文献类型：期刊文献

中文题名：环境因素对PBO纤维老化的影响和储存寿命预测

英文题名：Effect of Environmental Factors on the Aging Behave of PBO Fibers and the Storage Life Prediction

作者：宋波[1];傅倩[1];刘小云[1];庄启昕[1];韩哲文[1]

机构：[1]华东理工大学特种功能高分子材料及相关技术教育部重点实验室,上海200237

年份：2010

卷号：24

期号：5

起止页码：487

中文期刊名：材料研究学报

外文期刊名：Chinese Journal of Materials Research

收录：CSTPCD;;EI(收录号：20104913461110);Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金50703010和50973028资助项目~~

语种：中文

中文关键词：有机高分子材料;聚对亚苯基苯并二噁唑纤维;老化;寿命预测

外文关键词：organic polymer materials; PBO fiber; aging; life prediction

摘要：研究了紫外光、湿度和温度等环境条件对聚对亚苯基苯并二噁唑(PBO)纤维老化的影响,并对PBO纤维在常规环境下的储存和使用寿命预测进行了初步分析。结果表明:在PBO纤维的老化过程中,紫外光照射造成纤维表皮的强烈破坏,使其强度大幅降低;水分子向纤维内部渗透,使其加速老化和强度降低;温度的升高促进水分子向纤维内部渗透和活动。在避光和避水条件下,PBO纤维具有相当高的耐热氧老化性能。
The effects of moisture,heat and UV light on the aging behave,the storage life and usage life of poly-p-phenylenebenzobisoxazole（PBO） fiber were investigated.It was found that the aging behaves of PBO fiber was susceptible to UV light.The cortex of the fiber was damaged severely during the 192 h accelerated UV light aging period,which led to significant reduction of tensile strength of fiber. The moisture had an evidently negative effect on the aging behaves of PBO fiber whether aging with UV light or not,and the effect was more obvious when exposed to UV light.The possible mechanism was the penetration of water molecules into the fiber＇s interior,which led to the formation of microfibril and the decline of fiber tensile strength.Increasing aging temperature can promote the penetration ability of water molecules,which speeded the decline of fiber tensile strength.The fibers aging in high humidity environments at a fixed temperature degraded more quickly.PBO fiber had excellent stability in isolation from moisture and ultraviolet radiation.