Curing behavior of powder coating of polyester resin

刘宏1; 2

doi:10.3969/j.issn.0438-1157.2012.04.044

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Curing behavior of powder coating of polyester resin

更新时间：2025-12-10

- Curing behavior of powder coating of polyester resin
- CIESC Journal Issue 4, Pages: 1315-1320(2012)
- 作者机构：
  
  1. 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
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2012.04.044
  CLC： Q323.5
- Online First：05 April 2012，
  
  Published：05 April 2012
- 稿件说明：
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刘宏1, 2. Curing behavior of powder coating of polyester resin[J]. CIESC Journal, 2012, (4): 1315-1320.
DOI：

刘宏1, 2. Curing behavior of powder coating of polyester resin[J]. CIESC Journal, 2012, (4): 1315-1320. DOI： 10.3969/j.issn.0438-1157.2012.04.044.

摘要

用差示扫描量热法(DSC)对固态条件下聚酯/TGIC(triglycidyl isocyanurate)体系的非等温固化反应动力学进行了研究。根据DSC和热重（TG）的分析结果，对聚酯粉末的固化过程及热稳定性进行了探讨，通过温度-升温速率图外推法确定了该体系的凝胶温度、固化温度和后固化温度分别为113、146和195℃。采用Kissinger方程、Doyle-Ozawa方程和Crane方程对DSC数据进行分析，得到了固化反应的平均表观活化能65.71 kJ·mol-1，频率因子8.50×106 min-1、反应级数0.95，建立了该树脂体系的固化动力学模型。讨论了固化反应速率、固化度、固化温度与时间等关系的变化规律及影响因素，为优化铝型材用粉末涂料聚酯体系的固化工艺提供了理论基础。

Abstract

The non-isothermal/TGIC curing kinetics of powder coating of polyester resin was investigated by differential scanning calorimetry（DSC).The curing process and thermal stability of this powder coating system were discussed based on the DSC and thermogravity（TG)results.The gelation temperature

curing peak temperature

and post-cure temperature were respectively calculated to be 113

146 and 195℃ from the non-isothermal DSC results by extrapolating the graph of temperature versus heating rate.The DSC data were analyzed with the Kissinger，Doyle-Ozawa and Crane equations

and the curing kinetic model of the powder coating system was established.The kinetic parameters

including the apparent activation energy

frequency factor and order of reaction were estimated to be 65.71 kJ·mol-1

8.50×106 min-1 and 0.95

respectively.The influence factors of curing reaction rate

degree of cure

curing temperature and time were discussed.This study provides a theoretical basis to understand and optimize the curing process of powder coating of polyester resin for aluminum electrostatic powder spraying.

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