典型自触发无序材料玻璃化转变的液态簧振动力学谱研究  

Mechanical Spectrum Investigation of Glass Transition in 2-formyl-2-lipin-Series

作　　者：张晋鲁[1] 周恒为[1] 王丽娜 黄以能[1] 

机构地区：[1]伊犁师范学院凝聚态物理与材料设计研究所,新疆伊宁835000

出　　处：《伊犁师范学院学报（自然科学版）》2008年第2期20-22,共3页Journal of Yili Normal University：Natural Science Edition

基　　金：该工作受到国家自然科学基金(10274028;10774064);新疆自治区教育厅重点基金(XJUEDU2007137);新疆自治区科技厅重点基金(200721104);伊犁师范学院重点基金(2006.1-2008.12;2007.1-2009.12)资助的课题的支持

摘　　要：用最近发明的液态簧振动力学谱方法对典型自触发无序材料(邻苯二甲酸二脂系列样品)进行了测量,验证了该方法的可信性与有效性,并且表明它能够提供物质变化的丰富信息.研究结果还表明,随着分子内部自由度的增加,邻苯二甲酸二脂系列材料的玻璃化转变温度表现出先减小然后又增加,但脆性是先增加后减小的有趣又难以理解的反常趋势.实验中,还发现了一种有趣的现象,即样品在低温的Crack效应.The 2-formyl-2-lipin-series glassformers of self-generated disorder were measured by the reed-vibration mechanical spectrum for liquids (RMS-L) recently invented,that ensures the its reliability and availability to investigate the physical variations of soft-condensed matters. The measured results also indicate that,with the increase of the internal freedom degrees of the molecules,the glass transition temperature of the 2-formyl-2-lipin-series shows an anomalous tendency first decreasing then increasing,but the fragility changes in a contrary way,which is interesting and quite difficultly understood. A interesting phenomenon,i.e. the crack effect of the samples,was also observed at low temperature.

关 键 词：玻璃化转变 液态簧振动力学谱 邻苯二甲酸二脂系 

分 类 号：O321[理学—一般力学与力学基础]