CE2908聚酯粉末涂料固化反应特性  

Curing reaction characteristics of CE2908 polyester powder coating

作　　者：刘宏[1,2] 潘鹏举[2] 

机构地区：[1]湖南化工职业技术学院,湖南株洲412004 [2]浙江大学化学工程与生物工程学系化学工程联合国家重点实验室,浙江杭州310027

出　　处：《热固性树脂》2013年第2期39-42,共4页Thermosetting Resin

基　　金：湖南省科技厅资助计划项目(2010GK3149)资助

摘　　要：用示差扫描量热法(DSC)在动态条件下对CE2908聚酯/异氰尿酸三缩水甘油酯(TGIC)体系的固化反应动力学进行了研究。运用温度-升温速率图外推法确定了该体系的特征参数∶凝胶温度(T0)、固化温度(Tp)和后固化温度(Tf)分别为113℃、146℃和195℃。采用Kissinger方程和Crane方程计算CE2908聚酯/TGIC酯体系的动力学参数,平均表观活化能Ea为62.32 kJ/mol、频率因子A为8.50×106min-1、反应级数n为0.95。建立了该树脂体系的固化动力学模型。利用所建立的固化动力学方程分别讨论了等温和动态条件下CE2908聚酯/TGIC的固化反应特性,为优化聚酯/TGIC体系粉末涂料固化工艺提供了理论依据,并在生产工艺中验证了其正确性。The curing kinetics of CE2908 polyester/isocyanurate triglycidyl（TGIC） were studied using DSC under dynamic conditions.The characteristic parameters of the system were determined by extrapolation the figure of temperature vs.heating rate as followed： gel temperature（T0） 113 ℃,curing temperature（Tp） 146 ℃ and post-cure temperature（Tf） 195 ℃.The kinetic parameters were calculated by Kissinger equation and Crane equations.The average apparent activation energy Ea,frequency factor A and reaction order n was 62.32 kJ/mol,8.50×106 min-1 and 0.95,respectively.The curing dynamics model of the system was established.The curing reaction characteristics of CE2908 polyester/TGIC under isothermal or dynamic conditions were discussed using the established curing kinetics equations.A theoretical basis for optimizing polyester/TGIC system powder coating curing process was provided and verified the correctness in the production process.

关 键 词：聚酯树脂 示差扫描量热法 固化反应动力学 粉末涂料 

分 类 号：TQ633[化学工程—精细化工]