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요약정보
聚酯/TGIC粉末涂料固化动力学分析 / Curing Kinetics Analysis of Polyester/TGIC Powder Coatings
Resource Type
Academic Journal
Authors
王文学
;
王玉珏
;
韩宇莹
;
刘梓良
;
王传兴
;
Wang Wenxue
;
Wang Yujue
;
Han Yuying
;
Liu Ziliang
;
Wang Chuanxing
Source
涂料工业 / Paint & Coatings Industry
. 49(12):41-46
Subject
粉末涂料
固化动力学
FT-IR
DSC
Language
Chinese
ISSN
0253-4312
Online Access
Find it @ DONGA
초록
通过傅里叶变换红外光谱(FT-IR)分析EWA1113与PWA1221两种聚酯/TGIC粉末涂料固化前后结构的变化,判断粉末涂料是否发生固化反应;运用差示扫描量热分析(DSC)分析粉末涂料的固化过程,探究不同颜料对粉末涂料的固化行为的影响.结果 表明:EWA1113与PWA1221两种粉末涂料的理论固化温度范围分别为133.2~232.2℃和151.6~232.2℃;采用T-β外推法确定EWA1113粉末的固化工艺参数,线性拟合可得到凝胶化温度To为97℃,固化温度Tp为159.6℃,后处理温度Tf为195.98℃;通过Kissinger微分法和Doyle-Ozawa方程研究反应的活化能,通过计算分析得出活化能Ea为92.14 kJ/mol;采用Crane经验方程进行计算得出固化反应级数n为0.93;并通过DSC分析涂层的固化特性、固化度与温度的关系、理论最小固化时间等,得出在同一温度下,升温速率越慢,粉末涂料的固化程度越大的结论.
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