半芳香尼龙6T/66的合成和非等温结晶动力学的研究  

Synthesis and Non-isothermal Crystsllization Kinetics of Semi-aromatic Nylon 6T/66

作　　者：付鹏[1] 杨韶辉[1] 曹凯凯[1] 王玉东[1] 刘民英[1] 赵清香[1] 

机构地区：[1]郑州大学材料科学与工程学院,郑州450052

出　　处：《高分子通报》2010年第1期73-76,共4页Polymer Bulletin

摘　　要：采用成盐、预聚合、固相聚合三步法制备高分子量的PA6T/66,用差示扫描量热法(DSC)研究了PA6T/66的非等温结晶动力学,结果表明:结晶温度随着降温速率的增大而降低;半结晶期T1/2随降温速率Ф的增大呈指数下降,表明结晶速率随降温速率的增大而提高;由用R-T法可以得到在不同结晶度下lgΦ对lgT有较好的线性关系。用Kissinger方法计算得到PA6T/66(55/45)非等温结晶活化能分别为ΔE=-61.51kJ/mol。PA6T/65 was synthesized via a three-step procedure as follows： preparation of PA6T salt and PA66 salt, preparation of PA6T/66 prepolymer and preparation of PA6T/66. Nonisothermal crystallization kinetics of semi-aromatic nylons were investigated by differential scanning calorimetry （DSC）. The results showed that the crystallization temperature（Tc） decreases with decreasing of DSC scanning temperature; half-crystallization time, t1/2, decreases by exponentially with the increase of cooling rate Ф and thus the crystallization rate was enhanced with the increasing of cooling rate; lgФ mapping of lgT have a better linear relationship under different degree of crystallinity by R-T method; the activation energies of PA6T/66（55/45） is △E=-61.51 kJ/mol, which were calculated using the Kissinger method in the non-isothermal crystallization processes.

关 键 词：半芳香尼龙 PA6T/66 非等温结晶动力学 

分 类 号：O631.5[理学—高分子化学]