摘要
利用氯化聚乙烯(CPE)与有机小分子2,2亚甲基-双(4-甲基-6-叔丁基苯酚)(AO2246)采用不同工艺制备了有机杂化阻尼材料,通过动态力学分析(DMA)、差示扫描量热(DSC)、扫描电镜(SEM)和红外光谱(FT-IR)考察了材料的动态力学性能和微观结构。研究结果表明,AO2246在基体CPE中的分散状态对体系的阻尼性能影响较大。在未经热压的CPE/AO2246体系中,AO2246以三维谷粒结晶存在,造成体系的损耗因子(tanδ)比基体的还要低;而经过热压工艺的CPE/AO2246体系,AO2246与CPE产生了有机杂化,使体系的tanδ峰值获得较大的提高,同时玻璃化温度向高温方向移动,改善了体系的阻尼特性。红外光谱图表明,高温热压工艺的AO2246分子间产生了氢键作用的新的吸收峰,从而进一步提高了体系的阻尼性能。
The dynamic mechanical properties and microstructure of composites consisting of chlorinated polyethylene（CPE） and 2,2′-methylene-bis-（6-tert-butyl-4-methyl-phenol）（AO2246） were investigated by means of dynamic mechanical analysis（DMA）,differential scanning calorimetry（DSC）,scanning electron microscope（SEM） and Fourier transform infrared spectroscopy（FT-IR）.The results show that dispersion states of AO2246 in CPE matrix have an important influence on the damping properties of CPE/AO2246 system.In unpressed CPE/AO2246 composite,most AO2246 moleculars exist in the form of crystals with three-dimensional grain shape,which lead to lower loss factor（tanδ） of unpressed CPE/AO2246 than that of pure CPE.Whereas organic hybrid of CPE and AO2246 is formed after hot-pressed and quenching process in pressed CPE/AO2246 system,which makes loss factor（tanδ） obtain improvement and glass transition temperature shift to higher temperature.In two varied hot-pressed process,it is seen that pressed CPE/AO2246 at higher temperature exhibits a new absorption peak from Fourier transform infrared spectroscopy,the appearance of the peak seems to be due to intermolecular hydrogen bonding of AO2246,which makes damping properties obtain further improvement.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2012年第2期92-95,100,共5页
Polymer Materials Science & Engineering
基金
江苏南通市科技局应用研究资助(K2010063)
关键词
阻尼性能
形态结构
杂化体系
分子氢键
damping property
morphological structure
hybridization system
intermolecular hydrogen bonding
