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.
WANG Wen-Xue
,
WANG Yu-Jue
,
HAN Yu-Ying
,
LIU Zi-Liang
,
WANG Zhuan-Xin
. Curing Kinetics Analysis of Polyester/TGIC Powder Coatings[J]. Paint & Coatings Industry, 2019
, 49(12)
: 41
-46
.
DOI: 10.12020/j.issn.0253-4312.2019.12.41
[1]MAFI R，MIRABEDINI S M，NADERI R，et al.Effect of curing characterization on the corrosion performance of polyester and polyesterepoxy powder coatings[J].Corrosion Science, 2008, 50(12):3280-3286
[2]MAFIR，MIRABEDINI S M，Attar M M，et al.Cure characterization of epoxy and polyester clear powder coatings using differential scanning calorimetry(DSC) and dynamic mechanical thermal analysis(DMTA)[J].Progress in Organic Coatings, 2005, 54(3):164-169
[3]胡利平 .低温固化聚酯 /环氧粉末涂料研究 [D].广州：广东工业大学， 2015.
[4]李勇 .TGIC粉末涂料用半结晶聚酯树脂的合成与性能 [D].广州：华南理工大学， 2014.
[5]徐春雷 .粉末涂料用丙烯酸树脂的合成及其固化分析[D].合肥：合肥工业大学， 2009.
[6]RAMISX，CADENATO A，MORANCHO J M，et al.Curing of a thermosetting powder coating by means of DMTA，TMA and DSC[J].Polymer, 2003, 44(7):2067-2079
[7]GHOREISHI K，YARMO M A，ASIM N.Investigation of curing kinetics of diglycidyl ether of bisphenol A and zinc (II)complexes using dynamic DSC technique[J].Journal of Polymer Research, 2015, 22(2):18-
[8]SHI Q，HUANG W，ZHANG Y，et al.Curing of polyester powder coating modified with rutile nano-sized titanium dioxide studied by DSC and real-time FT-IR[J].Journal of Thermal Analysis & Calorimetry, 2012, 108(3):1243-1249
[9]吴笑笑 .粉末涂料用丙烯酸树脂的合成及固化 [D].合肥：合肥工业大学， 2015.
