聚苯硫醚合成反应的动力学研究

KINETICS OF POLYPHENYLENE SULFIDE SYNTHESIS

以脱水硫化钠和对二氯苯为单体，在六甲基磷酰三胺溶剂中常压下研究了聚苯硫醚合成的反应动力学。结果表明，该聚合反应符合二级反应动力学规律，在１８２、１９２、２０２和２１２℃条件下的聚合反应速率常数分别为１．７５×１０^（－４）、３．０２×１０^（－４）、５．５６×１０^（－４）和１．３１×１０^（－３）ｋｇ／ｍｏｌ·ｓ，反应的活化能为１２３ｋＪ／ｍｏｌ。

The polycondensation kinetics of para-dichlorobenzene with dehydrated sodium sulfide has been investigated in hexamethyl-phosphoric triamide under atmcopheric pressure.The results shown that the polycondensation reaction follows second order kinetics.The rate constant at 182,192,202 and 212 C are 1.75×10-4,3.02 ×10-4,5.56×10-4 and 1.31 ×10-3 k/lmol·s, respectively.The activation energy of the polycondensation reaction is 123 kJ/mol.