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 T0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。
In this paper，an analysis of structures before and after curing of EWA1113 and PWA1221 polyester/TGIC powder coatings by Fourier transform infrared spectroscopy（FT-IR）were described. The results confirmed a curing reaction for the powder coatings. The differential scanning calorimetry（DSC） test was conducted to study the curing process ofpowder coatings. The effects of different pigments on the curing behavior of powder coatingswere investigated. The theoretical curing temperature of EWA1113 and PWA1221 powder coatingswere 133. 2~232. 2 ℃ and 151. 6~232. 2 ℃ respectively. The curing process parameters of EWA1113 powder were determined by T -β extrapolation method，indicating the gelling temperature T0 97 ℃，the curing temperature Tp 159. 6 ℃，and the post-treatment temperature Tf 195. 98 ℃ . The activation energy Ea was 92. 14 kJ · mol-1 calculated by the Kissingerdifferential method and the Doyle-Ozawa equation. The curing reaction order n 0. 93 was calculated by the Crane empirical equation. The curing characteristics of the coatings，the relationship between the degree of curing and the temperature and the theoretical minimumcuring time were analyzed by DSC. It was concluded that the slower the heating rate at thesame temperature，the greater the degree of curing of the powder coatings.
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