A novel scalable synthesis process of PPTA by coupling n-pentane evaporation for polymerization heat removal  

作　　者：Tao Zhang Guo Hua Luo Fei Wei Yan Yan Lu Wei Zhong Qian Xin Lin Tuo 

机构地区：[1]Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

出　　处：《Chinese Chemical Letters》2011年第11期1379-1382,共4页中国化学快报（英文版）

基　　金：the National Program on Key Basic Research Project(973 Program)(No 2011 CB606101);National Natural Science Foundation of China(No51003052);National Science Foundation for Post-doctoral Scientists of China(No023205066) for financial support

摘　　要：In this study,we compared the effect of n-pentane and ice-water bath on removing the thermal effect in the poly（p-phenylene terephthalamide）（PPTA） polymerization process.The results indicate that the n-pentane can help to transfer the reaction heat faster and better.Adding suitable amount of n-pentanes into the PPTA preparation process not only improve the heat transfer,but also reduce the motor power in the polymerization process.Moreover,the introduction of n-pentane properly does not result in decrease of the inherent viscosity（η_（inh）） of polymer.Instead,it leads to increased viscosity of polymer during the PPTA preparation process.The results indicate that n-pentane can effectively transfer the reaction heat and avoid overheating during the polymerization of PPTA.In this study,we compared the effect of n-pentane and ice-water bath on removing the thermal effect in the poly（p-phenylene terephthalamide）（PPTA） polymerization process.The results indicate that the n-pentane can help to transfer the reaction heat faster and better.Adding suitable amount of n-pentanes into the PPTA preparation process not only improve the heat transfer,but also reduce the motor power in the polymerization process.Moreover,the introduction of n-pentane properly does not result in decrease of the inherent viscosity（η_（inh）） of polymer.Instead,it leads to increased viscosity of polymer during the PPTA preparation process.The results indicate that n-pentane can effectively transfer the reaction heat and avoid overheating during the polymerization of PPTA.

关 键 词：PPTA N-PENTANE Ice-water bath Reaction heat 

分 类 号：TQ316.3[化学工程—高聚物工业] TE624.47[石油与天然气工程—油气加工工程]