中国塑料 ›› 2022, Vol. 36 ›› Issue (4): 115-120.DOI: 10.19491/j.issn.1001-9278.2022.04.017

• 助剂 • 上一篇    下一篇

不同POSS对磷⁃硅协同阻燃环氧树脂性能的影响

徐伟华1,2, 郑宇1,2, 沈向阳1,2, 张炎1,2, 刘桔文1,2, 严石静1,2()   

  1. 1.广西民族大学材料与环境学院,南宁 530008
    2.广西林产化学与工程重点实验室,广西林产化学与工程协同创新中心,南宁 530008
  • 收稿日期:2021-12-15 出版日期:2022-04-26 发布日期:2022-04-24
  • 通讯作者: 严石静(1985—),女,副教授,研究方向:无卤阻燃环氧树脂和可降解热固性树脂,280289710@qq.com
    E-mail:280289710@qq.com
  • 基金资助:
    国家自然科学基金(51903061);广西自然科学基金(2019GXNSFBA185020);广西科技计划项目广西科技基地和人才专项(桂科AD21159008)

Effects of different POSS on properties of phosphorus⁃silicon synergistic flame retardant epoxy resin

XU Weihua1,2, ZHENG Yu1,2, SHEN Xiangyang1,2, ZHANG Yan1,2, LIU Juwen1,2, YAN Shijing1,2()   

  1. 1.School of Materials and Environment,Guangxi University for Nationalities,Nanning 530008,China
    2.Guangxi Key Laboratory of Chemistry and Engineering of Forest Products,Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products,Nanning 530008,China
  • Received:2021-12-15 Online:2022-04-26 Published:2022-04-24
  • Contact: YAN Shijing E-mail:280289710@qq.com

摘要:

将两种多面体低聚倍半硅氧烷(POSS)分别与9,10?二氢?9?氧杂?10?磷杂菲?10?氧化物(DOPO)基有机磷阻燃剂(D?bp)复配,制备了磷?硅协同阻燃环氧树脂,并对其阻燃、热、力学和动态力学性能等进行分析。结果表明,在磷含量仅为0.25 %(质量分数,下同)时,磷?硅协同阻燃环氧树脂就能达到UL 94 V?0级;当苯基?POSS与D?bp复配时,峰值热释放速率(p?HRR)、总热释放量(THR)和平均有效燃烧热(av?EHC)为313.9 kW/m2、118.2 MJ/m2和23.1 MJ/kg,分别降低了66.6 %、41.4 %和26.9 %;环氧基?POSS与D?bp复配时,能够同时改善磷?硅协同阻燃环氧树脂的阻燃、热、力学和动态力学性能,表现出优异的综合性能。

关键词: 多面体低聚倍半硅氧烷, 9,10?二氢?9?氧杂?10?磷杂菲?10?氧化物, 环氧树脂, 无卤阻燃, 协同阻燃

Abstract:

The phosphorus?silicon synergistic flame?retardant epoxy resins were prepared separately by using two types of polyhedral oligomeric silsesquioxane (POSS) combined with 9,10?dihydro?9?oxa?10?phosphaphenanthrene?10?oxide (DOPO)?based organophosphorus flame retardants (D?bp), and their flame retardant, thermal properties, mechanical, and dynamic mechanical properties were investigated. The results indicated that the phosphorus?silicon synergistic flame retardant epoxy resins obtained a UL 94 V?0 rating at a phosphorus content of only 0.25 wt%. The epoxy resins exhibited a peak heat release rate of 313.9 kW/m2, total heat release of 118.2 MJ/m2, and average effective combustion heat of 23.1 MJ/kg, which decreased by 66.6 %, 41.4 % and 26.9 % respectively when the Phenyl?POSS was compounded with D?bp. The combination of Epoxy?POSS and D?bp could simultaneously improve the flame retardant, thermal, mechanical, and dynamic mechanical properties of phosphorus?silicon synergistic flame retardant epoxy resins, indicating excellent comprehensive performance.

Key words: polyhedral oligomeric silsesquioxane, 9,10?dihydro?9?oxa?10?phosphaphenanthrene ?10?oxide, epoxy resin, halogen?free flame retardant, synergistic flame retardant

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