高等学校化学学报 ›› 2023, Vol. 44 ›› Issue (8): 20230030.doi: 10.7503/cjcu20230030

• 高分子化学 • 上一篇    下一篇

陶瓷前体改性竹基多孔碳协同聚磷酸铵阻燃环氧树脂及其热稳定性和力学性能

王芳, 郝建薇()   

  1. 北京理工大学材料学院, 北京 100081
  • 收稿日期:2023-01-24 出版日期:2023-08-10 发布日期:2023-04-25
  • 通讯作者: 郝建薇 E-mail:hjw@bit.edu.cn
  • 作者简介:现在北京市丰台区消防救援支队工作.
  • 基金资助:
    河北省京津冀协同创新建设项目(20541401D);国家自然科学基金(21474008)

Thermal Stability and Mechanical Properties of the Composite of Epoxy Resin with Ammonium Polyphosphate/Ceramic Precursor Modified Bamboo-based Porous Carbon as Synergistic Flame Retardant

WANG Fang, HAO Jianwei()   

  1. School of Materials,Beijing Institute of Technology,Beijing 100081
  • Received:2023-01-24 Online:2023-08-10 Published:2023-04-25
  • Contact: HAO Jianwei E-mail:hjw@bit.edu.cn
  • Supported by:
    the Beijing-Tianjin-Hebei Collaborative Innovation Construction Project in Hebei Province, China(20541401D);the National Natural Science Foundation of China(21474008)

摘要:

绿色、 低成本及高性能一直是材料制备面临的挑战. 本文利用硅烷偶联剂水解产物硅醇与硼酸反应制备了硅硼陶瓷前驱体改性竹基多孔碳材料(MPCM), 其中以γ-缩水甘油醚氧丙基三甲氧基硅烷(KH560)和硼酸改性的MPCM(M6PCM, 质量分数1.6%)与聚磷酸铵(APP, 质量分数6.2%)协同阻燃环氧树脂(EP)的EP/APP/M6PCM复合材料氧指数达到了31.1%, 热释放速率峰值降低了60%, 残炭量增加了12.7%, 玻璃化转变温度提高到136 ℃, 储能模量达到3319 MPa. 机理研究表明, M6PCM表面的硅硼陶瓷前驱体加快了APP脱除H2O和NH3形成聚磷酸的速度, 促进了类陶瓷炭的形成及类石墨碳的转化. 与相关研究结果相比, APP/M6PCM体系在提高EP复合材料性能的同时显示出了成本优势.

关键词: 硅硼化合物, 多孔碳材料, 环氧树脂, 阻燃剂

Abstract:

Green, low cost and high performance have always been the challenges of material preparation. The porous bamboo-based carbon material(MPCM) modified by silicon boron ceramic precursor was prepared by the reaction of silane coupling agent(hydrolysate silanol) and boric acid in this paper. Among them, the limiting oxygen index of epoxy resin(EP) modified by γ-glycidyl ether oxypropyl trimethoxysilane(KH560), boric acid MPCM(M6PCM, mass fraction 1.6%) and ammonium polyphosphate(APP, mass fraction 6.2%)(EP/APP/M6PCM) reached 31.1%, the peak heat release rate decreased by 60%, and the residual char increased by 12.7%, the glass transition temperature was increased to 136 ℃, and the storage modulus reached 3319 MPa. The mechanism study showed that the silicon boron ceramic precursor on the surface of M6PCM expedited the removal of H2O and NH3 from APP to form polyphosphoric acid, and promoted the formation of ceramic-like carbon and the transformation of graphite-like carbon. Compared with the results of relevant literature published in recent years, APP/M6PCM system shows cost advantages while improving the properties of EP composites.

Key words: Silicon-boron compound, Porous carbon material, Epoxy resin, Flame retradant

中图分类号: 

TrendMD: