膨胀型石墨/水滑石对聚丁二酸-co-己二酸丁二醇酯的复合成核作用及其非等温结晶动力学研究  

Nucleation Activity and Nonisothermal Crystallization Kinetics of Poly(butylene succinate-co-butylene adipate) Composite with Expansion Graphites/Houphites

作　　者：唐硕[1] 徐军[1] 郭宝华[1] 李彩霞[2] 夏鹏翎[2] 田正刚[2] 

机构地区：[1]清华大学化工系,北京100084 [2]中国石油集团东方地球物理勘探有限责任公司,北京072751

出　　处：《塑料》2011年第6期1-4,共4页Plastics

基　　金：国家自然科学基金(50673050)

摘　　要：用差示扫描量热仪(DSC)研究PBSA和PBSA/膨胀型石墨/水滑石复合材料的非等温结晶过程,结果表明:膨胀型石墨/水滑石可以提高PBSA的结晶温度,并可以将其非等温结晶温度提高15～22℃。通过Jeziornyz用于非等温结晶峰修正的Avrami方程拟合得到PBSA和PBSA/膨胀型石墨/水滑石复合材料的n值分别为4.3～4.9和4.2～6.3,但是Ozawa方法在实验中并不能得到理想的处理结果。通过莫志深法进一步处理此非等温结晶过程,可以计算得到Ozawa指数m为3.0和2.7,表明膨胀型石墨/水滑石在PBSA体系中起到了异相成核的作用。The nonisothermal crystallization kinetics of neat PBSA and PBSA/expansion graphite/houphite composite were investigated by using differential scanning calorimetry （DSC）,which represented that expansion graphite/houphite could increase the crystallization temperature by 15 -22 ℃. According to Avrami equation modified by Jeziorny, the nonisothermal crystallization process of neat PBSA and the aforementioned composite were analyzed,indicating that the Avrami exponent n of which were 4.3 - 4.9 and 4.2 - 6.3. Ozawa method was failed to represented the experiment, but Mo＇ s method successfully obtained the Ozawa exponent m of neat PBSA and the composite were 3.0 and 2.7, which stated expansion graphite and houphite exhibited excellent nucleation activity for the crystallization of PBSA.

关 键 词：聚丁二酸丁二醇-co-己二酸丁二醇酯(PBSA) 膨胀型石墨 水滑石 非等温结晶 结晶动力学 

分 类 号：TQ326.9[化学工程—合成树脂塑料工业]