Lu Zijie, Li Jing, Zhou Zhongquan, He Zhiduan, Zhang Lixin, Ke Wei. The Study of Cure Mechanism of a Fusion-bonded Epoxy Powder Coating[J]. Development and Application of Materials, 2000, 15(2): 8-11. DOI: 10.19515/j.cnki.1003-1545.2000.02.003
Citation: Lu Zijie, Li Jing, Zhou Zhongquan, He Zhiduan, Zhang Lixin, Ke Wei. The Study of Cure Mechanism of a Fusion-bonded Epoxy Powder Coating[J]. Development and Application of Materials, 2000, 15(2): 8-11. DOI: 10.19515/j.cnki.1003-1545.2000.02.003

The Study of Cure Mechanism of a Fusion-bonded Epoxy Powder Coating

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  • Received Date: August 19, 1999
  • Revised Date: September 26, 1999
  • Available Online: June 16, 2024
  • The degree of cure (DOC) of a new type of epoxy/dicyandiamide powder coatings was detected by using solvent extraction on the free film cured at temperatures from 160℃to 230℃ for different time and the kinetic process was analyzed. The results revealed that the cure reaction yielded a single Arrhenius activation energy (91.4kJ/mol), which indicated that there might be only one overall reaction mechanism in the range of the temperature tested. The cure reaction of epoxy/dicyandiamide powder system was complex, involving two principal reactions between epoxide and amine hydrogen, and between hydroxyl groups and —CN. The cure mechanism was also discussed.
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