文献类型：期刊文献

中文题名：短玻纤增强尼龙10T复合材料的热氧老化性能

英文题名：Thermal-oxidative Aging Properties of Short Glass Fiber Reinforced Nylon 10T Composites

作者：宋海硕 周登凤 张道海 郭建兵

第一作者：宋海硕

通信作者：Guo, JB[1];Guo, JB[2]

机构：[1]贵州大学材料与冶金学院;[2]国家复合改性聚合物材料工程技术研究中心;[3]贵州理工学院材料与冶金工程学院

第一机构：贵州大学材料与冶金学院,贵阳550025

通信机构：corresponding author), Guizhou Univ, Sch Mat & Met, Guiyang 550025, Guizhou, Peoples R China;corresponding author), Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Guizhou, Peoples R China.

年份：2017

卷号：45

期号：12

起止页码：43-49

中文期刊名：材料工程

外文期刊名：Journal of Materials Engineering

收录：CSTPCD;;EI(收录号：20180904846277);Scopus(收录号：2-s2.0-85042497074);WOS:【ESCI(收录号:WOS:000465605400007)】；北大核心:【北大核心2014】；CSCD:【CSCD2017_2018】；

基金：贵州省高层次创新型人才培养项目(黔科合人才[2015]4039号);贵州省优秀青年科技人才培养对象专项资金(黔科合人字[2015]26号)

语种：中文

中文关键词：玻纤;尼龙10T;热氧老化;力学性能;活化能

外文关键词：glass fiber;PA10T;thermal-oxidative aging;mechanical property;activation energy

摘要：通过熔融共混法制备短玻纤增强尼龙10T(SGF/PA10T)复合材料,采用DSC、DMA、红外光谱、力学测试等表征方法对240℃下SGF/PA10T的热氧老化性能进行研究。结果表明:热氧老化使SGF/PA10T的初始结晶温度有所增加,玻纤与PA10T基体之间的界面作用减弱,阻尼性能下降;随着热氧老化时间的延长,复合材料的玻璃化转变温度先增加后减小,通过Arrhenius方程对SGF/PA10T发生玻璃化转变时的活化能进行计算,结果进一步证明热氧老化影响分子链的活动能力,并且PA10T分子链在老化初期发生微交联;同时热氧老化显著降低SGF/PA10T的力学性能,当老化天数为50d时,拉伸强度、弯曲强度和缺口冲击强度保持率分别为18.4%,9.8%和37.7%。
Short glass fiber reinforced polyamide10T(SGF/PA10T)composites were prepared by melt blending method,and the thermal-oxidative aging properties of SGF/PA10T composites at240OC were characterized by differential scanning calorimetry(DSC),dynamic mechanical thermal analysis(DMA),FT-IR and mechanical properties test.The results show that the crystallization onset tem-perature of SGF/PA10T increases,the interfacial interaction between glass fiber and PA10T matrix is weakened,and damping capacity decreases during the thermal-oxygen aging process.With the in-crease of thermal-oxygen aging time,the glass transition temperature increases first and then decrea-ses.Arrhenius equation was used to determine the glass transition activation energy of SGF/PA10T,and the results show that the mobility of molecular chain is changed and PA10T molecular chains are slight cross-linked in preliminary aging stage.At the same time,the thermal-oxygen can significantly reduce the mechanical properties of SGF/PA10T composites,after age at240〇C for50d,the tensile strength,flexural strength and impact strength retention rates are18.4%,9.8%and37.7%respec-tively.