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.
出处
《塑料》
CAS
CSCD
北大核心
2011年第6期1-4,共4页
Plastics
基金
国家自然科学基金(50673050)
