含磷阻燃剂阻燃环氧树脂热降解动力学

doi:10.3969/j.issn.0438-1157.2014.12.059

化工学报 ›› 2014, Vol. 65 ›› Issue (12): 5082-5089.DOI: 10.3969/j.issn.0438-1157.2014.12.059

• 材料化学工程与纳米技术 • 上一篇下一篇

含磷阻燃剂阻燃环氧树脂热降解动力学

田秀娟¹, 王忠卫¹, 于青¹, 高军²

1. 山东科技大学材料科学与工程学院, 山东青岛 266590;
2. 山东科技大学化学与环境工程学院, 山东青岛 266590

收稿日期:2014-04-30 修回日期:2014-07-18 出版日期:2014-12-05 发布日期:2014-12-05
通讯作者: 王忠卫
基金资助:
国家自然科学基金项目(21103099).

Kinetics of thermal decomposition of epoxy resins modified with phosphorus-containing flame retardant

TIAN Xiujuan¹, WANG Zhongwei¹, YU Qing¹, GAO Jun²

1. School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, China;
2. School of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, China

Received:2014-04-30 Revised:2014-07-18 Online:2014-12-05 Published:2014-12-05
Supported by:
supported by the National Natural Science Foundation of China(21103099).

摘要/Abstract

摘要： 以2-二苯基膦酰基-1,4-苯二酚(DPO-HQ)为阻燃剂制备了阻燃环氧树脂,利用动态热重分析法(TGA)研究了纯环氧树脂(EP)和阻燃环氧树脂(FR-EP)在不同升温速率下的热稳定性,建立了EP和FR-EP体系的动力学模型和非模型动力学(MFK),并对比分析了模型动力学和非模型动力学对于描述EP体系和FR-EP体系的适用性.结果表明:阻燃剂的引入降低了环氧树脂初始降解温度,但增加了残炭率.由Flynn-Wall-Ozawa方法和Coats-Redfern方法建立的模型动力学表征EP和FR-EP体系高温降解过程中误差较大,而非模型动力学能更准确地预测和描述EP和FR-EP体系的高温降解行为.

关键词: 环氧树脂, 阻燃剂, 热降解, 非模型动力学, 热稳定性

Abstract: Phosphorus-containing epoxy resin was prepared from 2-diphenylphosphonothioic-1,4-diphenol (DPO-HQ, as flame retardant). The thermal stabilities of neat epoxy resin (EP) and flame retardant modified epoxy resin (FR-EP) were studied with thermogravimetric analysis (TGA) at different heating rates. Kinetics model and model-free kinetics (MFK) were established based on TGA data. The serviceability values of model kinetics and model-free kinetics to epoxy resin and flame retardant modified epoxy resin were compared and analyzed. The initial degradation temperature of flame retardant modified epoxy resin slightly decreased with introduction of flame retardant, but the yield of char residue increased. The model kinetics of EP and FR-EP determined by using the Flynn-Wall-Ozawa method and the Coats-Redfern method were not applicable to epoxy resin system. MFK was more suitable to describe and predict the degradation behavior of epoxy resin and flame retardant modified epoxy resin.

Key words: epoxy resins, flame retardant, thermal degradation, model-free-kinetics, thermal stabilities

中图分类号:

O631

田秀娟, 王忠卫, 于青, 高军. 含磷阻燃剂阻燃环氧树脂热降解动力学[J]. 化工学报, 2014, 65(12): 5082-5089.

TIAN Xiujuan, WANG Zhongwei, YU Qing, GAO Jun. Kinetics of thermal decomposition of epoxy resins modified with phosphorus-containing flame retardant[J]. CIESC Journal, 2014, 65(12): 5082-5089.

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含磷阻燃剂阻燃环氧树脂热降解动力学

Kinetics of thermal decomposition of epoxy resins modified with phosphorus-containing flame retardant

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