应用化学 ›› 2025, Vol. 42 ›› Issue (2): 212-221.DOI: 10.19894/j.issn.1000-0518.240324

• 研究论文 • 上一篇    下一篇

氮磷阻燃剂的合成及其在环氧树脂中的阻燃应用

张傲天, 史俊杰, 陈前火(), 李红周()   

  1. 福建师范大学环境与资源学院,聚合物资源绿色循环利用教育部工程研究中心,福州 350007
  • 收稿日期:2024-10-16 接受日期:2024-12-27 出版日期:2025-02-01 发布日期:2025-03-14
  • 通讯作者: 陈前火,李红周
  • 基金资助:
    国家自然科学基金(22478073);福建省自然科学基金(2021J01198)

Synthesis of Nitrogen-Phosphous Flame Retardants and Their Flame Retardant Applications in Epoxy Resins

Ao-Tian ZHANG, Jun-Jie SHI, Qian-Huo CHEN(), Hong-Zhou LI()   

  1. College of Environmental and Resources,Engineering Research Center of Polymer Green Recycling of Ministry of Education,Fujian Normal University Fuzhou 350007,China
  • Received:2024-10-16 Accepted:2024-12-27 Published:2025-02-01 Online:2025-03-14
  • Contact: Qian-Huo CHEN,Hong-Zhou LI
  • About author:lihongzhou@fjnu.edu.cn
    qhchen@fjnu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22478073);the Natural Science Foundation of Fujian Province(2021J01198)

摘要:

利用9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物(DOPO)、2-氨基苯并噻唑(ABZ)和吲哚-3-甲醛(I3C)分两步成功合成了一种新型的多元素协同阻燃剂(DAI),采用傅里叶变换红外光谱(FT-IR)和核磁共振(NMR)光谱验证了DAI的成功合成,然后使用热固法将其与环氧树脂(EP)共混,制备了EP/DAI-3、EP/DAI-5和EP/DAI-7。 研究了所制备EP复合材料的阻燃性能、燃烧后的残炭性能等。结果表明,制备的EP复合材料具有出色的抑烟和阻燃性能,特别是添加了质量分数7% DAI的EP,其热释放速率峰值(pHRR)、CO释放速率峰值(pCOPR)和CO2释放速率峰值(pCO2PR)分别显著降低了34.5%、32.3%和 42.2%。 与纯EP相比,EP/DAI-7的极限氧指数(LOI)值达到了32.6%,并在UL-94测试中达到V-0等级。残炭分析表明,制备的EP/DAI-7的残炭比纯EP更加致密更加坚固,ID/IG的数值达到2.03,其石墨化程度最高。

关键词: 环氧树脂, 9, 10-二氢-9-氧杂-10-磷杂菲-10-氧化物, 2-氨基苯并噻唑, 吲哚-3-甲醛, 多元素协同阻燃

Abstract:

In this study, a novel multielemental synergistic flame retardant (DAI) was successfully synthesized in two steps using 9,10-dihydro-9-oxa-10-phospha-phenanthrene-10-oxide (DOPO), 2-aminobenzothiazole (ABZ), and indole-3-carboxaldehyde (I3C), which was verified by Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy (NMR). Epoxy resin/DAI-3 (EP/DAI-3), EP/DAI-5 and EP/DAI-7 were prepared by blending them with epoxy resin using the thermosetting method, and the flame retardant properties and residual carbon properties after combustion of the prepared EP composites were investigated. The results showed that the prepared EP composites had excellent smoke suppression and flame retardant properties, especially the 7% DAI-added EP, which showed significant reductions of 34.5%, 32.3% and 42.2% in pHRR, pCOPR and pCO2PR, respectively. Compared with pure EP, EP/DAI-7 achieved a LOI value of 32.6% and a V-0 rating in UL-94 test. The residual carbon analysis shows that the prepared EP/DAI-7 has a denser and stronger residual carbon than pure EP, with an ID/IG value of 2.03, which had the highest degree of graphitization.

Key words: Epoxy resin, 9, 10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 2-Aminobenzothiazole, Indole-3-carboxaldehyde, Multi-element synergistic flame retardant

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