主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2025, Vol. 44 ›› Issue (2): 175-180.

• • 上一篇    下一篇

席夫碱金属配合物改性DOPO对环氧树脂阻燃性能的影响

王婧煊1, 芦悦1, 何亮潮1, 孔庆红1,2   

  1. （1.江苏大学 环境与安全工程学院，江苏 镇江 212013； 2.江苏大学 应急管理学院，江苏 镇江 212013）
  • 收稿日期:2024-10-15 修回日期:2024-10-24 出版日期:2025-02-15 发布日期:2025-02-15
  • 作者简介:王婧煊，江苏大学环境与安全工程学院，主要从事清洁高效阻燃纳米复合材料研究，江苏省镇江市学府路301号，212001。
  • 基金资助:
    江苏大学校企合作项目（20220307）

Effect of DOPO modified with Schiff's alkali metal complexes on the flame retardancy of epoxy resins

Wang Jingxuan1, Lu Yue1, He Liangchao1, Kong Qinghong1,2   

  1. (1. School of Environment and Safety Engineering, Jiangsu University, Zhenjiang Jiangsu 212013, China; 2. School of Emergency Management, Jiangsu University, Zhenjiang Jiangsu 212013, China)
  • Received:2024-10-15 Revised:2024-10-24 Online:2025-02-15 Published:2025-02-15

摘要： 为了设计和开发具有绿色、环保高阻燃效率的EP阻燃剂，以SAPO及Fe(NO3)3·9H2O、Bi(NO3)3·5H2O为原料，设计合成了两种水杨醛基席夫碱金属化合物SAPO-Fe、SAPO-Bi。研究了它们对EP复合材料热稳定性能和阻燃性能的影响，并探究相关阻燃机理。结果显示，EP/6%SAPO-Fe、EP/6%SAPO-Bi的垂直燃烧测试通过UL-94 V1等级；LOI值分别提升20.6%和16.2%；pHRR值降低28.6%和34.8%；THR值降低30.8%和14.2%；与EP相比，残炭量分别增加了74.1%和112.9%；TSP值降低了40.4%和38.9%；PCOP值降低44.4%和50%。阻燃性能的显著提升主要得益于P、N元素与金属离子Fe3+、Bi3+的协同效应；残炭量的显著增加以及烟气释放的有效降低，归因于这些金属离子卓越的催化成炭能力，形成致密的炭层增强物理阻隔效果，从而有效阻止烟气的产生、可燃气体的逸出、氧气的进入以及热量的释放。

关键词: 环氧树脂, DOPO, 阻燃性能, 席夫碱金属配合物, P/N协同阻燃

Abstract: In order to design and develop EP flame retardants with green, environmentally friendly high flame retardant efficiency, two salicylaldehyde-based Schiff alkali metal compounds, SAPO-Fe and SAPO-Bi, were designed and synthesised using SAPO and Fe(NO3)3·9H2O and Bi(NO3)3·5H2O as raw materials. The effects of these compounds on the thermal stability and flame retardancy properties of EP composites were investigated and the related flame retardant mechanisms were probed. The results showed that the vertical combustion test of EP/6% SAPO-Fe and EP/6% SAPO-Bi passed UL-94 V1 rating; The LOI values were improved by 20.6% and 16.2%, respectively; the pHRR values were reduced by 28.6% and 34.8%; The THR values were reduced by 30.8% and 14.2%， and the amount of residual carbon was increased compared with that of EP by 74.1% and 112.9%; TSP values decreased by 40.4% and 38.9%; PCOP values decreased by 44.4% and 50%. The significant improvement in flame retardant performance is mainly due to the synergistic effect of P and N elements and metal ions Fe3+ and Bi3+. The significant increase in the amount of residual carbon and the effective reduction of smoke release are attributed to the excellent catalytic carbon formation ability of these metal ions, which forms a dense carbon layer to enhance the physical barrier effect, thus effectively preventing the generation of smoke, the escape of combustible gases, the entry of oxygen and the release of heat.

Key words: epoxy resin, DOPO, flame retardant properties, Schiff base metal complexes, P/N synergistic flame retardant