DSC技术在管道熔结环氧粉末研究中的应用
Application of DSC Technology in Studying Fusion Bonded Epoxy Powder Used for Pipeline Coating
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- DOI:
- 作者:
- 陈丽雄1, 常永懿2
CHEN Li-xiong1
- 作者单位:
- 1. 北京交通大学,北京 100044;
2. 中油管道防腐工程有限责任公司,河北廊坊 065000
Beijing Jiaotong University,Beijing 100044, China
- 关键词:
- 熔结环氧粉末;差示扫描量热法;固化反应动力学;玻璃化转变温度
FBE powder;DSC;curing kinetics;glass transition temperature
- 摘要:
- 应用差示扫描量热法(DSC)技术,研究了两种管道用熔结环氧粉末在不同升温速率下的动态DSC曲线,运用温度—升温速率图外推法,获得了每种管道用熔结环氧粉末涂料的固化工艺参数,即凝胶温度、固化温度和后处理温度;并采用Kissinger方程和Crane方程分析计算确定了体系固化反应动力学方程,应用建立的固化动力学方程式,预测了不同温度条件下每种熔结环氧粉末的反应速率常数,按照标准求得了相应的玻璃化转变温度和固化反应放热焓变。通过分析认为:DSC技术可很好地应用于管道熔结环氧粉末的开发研究中。
The kinetic DSC curves at different temperature rising rates of two kinds of FBE powders used for pipeline coating were studied by means of DSC technology. The curing process parameters such as gel temperature, curing temperature and post-treatment temperature were acquired by using T-β coating graph extrapolation. The kinetic model of the curing process was set up by using Kissinger equation and Crane equa- tion. Based on the kinetic model, the κ-reaction rate constants of each curing reaction at different temperatures were predicted. At the same time, the glass transition temperature and exothermic heat of the reaction were also gained. It shows that the DSC technology is very useful for FBE research work.2009,1(1): 11-13 收稿日期：2008-5-30分类号：TE973作者简介：陈丽雄（1973-）, 女, 湖南邵阳人, 北京交通大学在读研究生, 工程师, 1998 年毕业于石油大学（华东）, 先后在中油管道物资装备总公司市场部、利比亚管道项目、西部管道项目从事物流和材料管理工作。参考文献：
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