熔融缩聚透明共聚酰胺的制备及表征  

Preparation and Characterization of Transparent Copolyamides via Melt Polycondensation

作　　者：方春晖[1] 胡国胜[1] 张静婷[1] 王忠强[1,2] 刘冰肖 

机构地区：[1]中北大学高分子与生物工程研究所,太原030051 [2]东莞市信诺橡塑工业有限公司,广东东莞523860

出　　处：《工程塑料应用》2016年第2期111-115,共5页Engineering Plastics Application

基　　金：广东省2013年度省部(院)产学研结合项目(2013B090500003)

摘　　要：采用癸二胺、间苯二甲酸、2,2’-二甲基-4,4’-亚甲基双(环己胺)(DMDC)为单体,通过熔融缩聚法制备了透明间苯二甲酰癸二胺–间苯二甲酰2,2’-二甲基-4,4’-亚甲基双(环己胺)共聚酰胺(PA10I/DMDCI),利用偏光显微镜对其结构进行观察,并通过差示扫描量热和热失重对其热性能进行了表征。结果表明,获得的透明PA10I/DMDCI为非晶高聚物,特性黏度在0.73 d L/g以上,具有良好的热性能。当DMDC的加入量由0 mol增至0.11 mol时,透明PA10I/DMDCI的玻璃化转变温度由98℃提高至114℃,起始热分解温度由400℃提升至434.4℃,热分解活化能较高。By using the monomer of decanediamine, isophthalic acid and 2,2＇ -dimethyl-4,4＇ -methylenebis （cyclohexylamine） （DMDC）, transparent isophthaloyl decamethylene diamine-isophthaloyl 2,2＇ -dimethyl-4,4＇ -methylene bis （cyclohexylamine） copolyamide （PA10I / DMDCI） was systhesized through the process of melt polycondensation. The morphology was studied by polarizing microscope. The thermal properties were characterized by means of differential scanning calorimetry and thermal gravimetric analysis. Results show that, transparent PAIOI / DMDCI is amorphous, its intrinsic viscosity is above 0.73 dL / g. Transparent PA10I/DMDCI has good thermal stability. When the amount of DMDC increase from 0 mol to 0.11 mol, the glass transition temperature of transparent PA10I/DMDCI increase from 98℃ to 114%, the starting decomposition temperature increase from 400℃ to 434.4℃, its thermal degradation activation energy is higher.

关 键 词：癸二胺 间苯二甲酸 2 2’-二甲基-4 4’-亚甲基双(环己胺) 熔融聚合 透明聚酰胺 热性能 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]