摘要
采用熔融共混法制备了聚苯硫醚/羟基改性多壁碳纳米管(PPS/MWCNTs-OH)复合材料,用动态机械热分析法(DMTA)研究了PPS及PPS/MWCNTs-OH的动态力学性能。结果表明少量MWCNTs-OH的加入使PPS/MWCNTs-OH复合材料的储能模量(E′)明显提高,且随MWCNTs-OH含量增加而增加;从tanδ-T曲线看出,PPS的橡胶态(α)转变和玻璃态(β)转变峰分别出现在100.1℃和-26.8℃。随MWCNTs-OH含量增加,PPS/MWCNTs-OH复合材料的α及β转变均向高温移动,内耗峰强度明显下降。FTIR谱图显示MWCNTs-OH与PPS之间存在的分子间氢键限制了PPS分子链的热运动使刚性及耐热性提高。
New polyphenylene sulfide（PPS） based composites have been fabricated by the incorporation of hydroxy purified multi-walled carbon nanotubes（MWCNTs-OH） via melt mixing.Temperature curves of dynamic mechanical thermo analysis（DMTA） revealed an increase in the storage modules,hence in the rigidity of the systems,with small addition of MWCNTs-OH and increasing MWCNTs-OH content.The α and β transition peak shifts to higher temperatures due to the restriction in chain mobility imposed by the hydrogen bond force between MWCNTs-OH and PPS chains.tanδ peaks height of α and β-transition get to be weakening with the increase of MWCNTs-OH content.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2011年第6期77-80,共4页
Journal of Materials Engineering
基金
中央高校基本科研业务费专项资金资助(ZZ1119)
关键词
聚苯硫醚
多壁碳纳米管
氢键
动态力学性能
β转变
polyphenylene sulfide
multi-walled carbon nanotube
hydrogen bond
dynamic mechanical property
β transition
