共聚尼龙66/1212的等温结晶行为研究  

Study on isothermal crystallization behavior of nylon 66/1212 copolymer

作　　者：崔晶[1] 李应成[1] 林程 刘京妮 屠晓萍[1] 沈超 CUI Jing;LI Yingcheng;LIN Cheng;LIU Jingni;TU Xiaoping;SHEN Chao(SINOPEC Shanghai Research Institute of Petrochemical Technology,Shanghai 201208)

机构地区：[1]中国石化上海石油化工研究院,上海201208

出　　处：《合成纤维工业》2022年第3期54-58,共5页China Synthetic Fiber Industry

摘　　要：先制备尼龙66盐、尼龙1212盐,然后将两种盐进行缩聚反应制得共聚尼龙66/1212,研究了共聚尼龙66/1212的晶体结构、结晶形态、等温结晶动力学行为。结果表明:共聚尼龙66/1212为α晶型,在等温结晶过程中并没有发生晶型转变;共聚尼龙66/1212在结晶过程中形成了直径为50μm的球晶;与尼龙66和尼龙1212相比,共聚尼龙66/1212的结晶速率最慢,其结晶活化能为-37.0 kJ/mol。Nylon 66 salt and nylon 1212 salt were prepared to produce nylon 66/1212 copolymer by polycondensation of the two salts. The crystal structure, crystalline morphology and isothermal crystallization kinetics of nylon 66/1212 copolymer were studied. The results showed that nylon 66/1212 copolymer was in α crystal form and no crystal transformation occurred during isothermal crystallization process;spherulites with a diameter of 50 μm formed during the isothermal crystallization process of nylon 66/1212 copolymer;and compared with nylon 66 and nylon 1212, nylon 66/1212 copolymer had the lowest crystallization rate, and its crystallization activation energy was-37.0 kJ/mol.

关 键 词：共聚尼龙66/1212 等温结晶 晶型 结晶速率 结晶活化能 结晶行为 

分 类 号：TQ342.[化学工程—化纤工业]