尼龙66盐/尼龙6T盐的成盐过程分析  

Study on Forming Processes of Nylon 66 Salt/Nylon 6T Salt

作　　者：张冬梅[1] 朱俊[1] 顾雪萍[1] 冯连芳[1] 张才亮[1] ZHANG Dong-mei;ZHU Jun;GU Xue-ping;FENG Lian-fang;ZHANG Cai-liang(State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering,Zhejiang University, Hangzhou 310027, China)

机构地区：[1]化学工程联合国家重点实验室(浙江大学),浙江大学化学工程与生物工程学院,浙江杭州310027

出　　处：《高校化学工程学报》2017年第4期911-917,共7页Journal of Chemical Engineering of Chinese Universities

基　　金：浙江省公益技术研究项目(2014C31139);中央高校基本科研业务费专项资金项目(2017FZA4024)

摘　　要：针对目前尼龙盐成盐过程尚不明确的现状,通过pH和反应温升的实时测量,对己二酸(ADA)和对苯二甲酸(PTA)与己二胺(HMDA)反应生成尼龙66盐/尼龙6T盐的成盐过程进行了研究。结果表明:当温度低于40℃时,ADA与HMDA反应生成尼龙66盐的反应是由ADA溶解速率控制,温度高于50℃,则转变为反应控制;而PTA与HMDA的反应在30~60℃内都是由PTA的溶解速率控制。当ADA和PTA同时与HMDA反应时,由于PTA的溶解度比ADA的低,HMDA首先与ADA反应生成尼龙66盐,然后再与PTA反应生成尼龙6T盐。In order to elucidate the formation mechanism of nylon66salt/nylon6T salt,the reaction processof adipic acid(ADA)/p-phthalic acid(PTA)and hexamethylendiamine(HMDA)was studied by real-timemeasurements of pH and reaction temperature rise.Results show that the reaction of ADA and HMDA to formnylon66salt is controlled by the dissolution rate of ADA at T<40℃,and it turns to reaction rate controlled atT>50℃.The reaction of PTA and HMDA to form nylon6T salt is controlled by the dissolution rate of PTAwithin30~60℃.When ADA and PTA are mixed with HMDA,HMDA reacts with ADA first to produce nylon66salt,and then reacts with PTA to form nylon6T salt.

关 键 词：尼龙66盐 尼龙6T盐 己二胺 己二酸 对苯二甲酸 

分 类 号：Q813.11[生物学—生物工程]