Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (8): 20230030.doi: 10.7503/cjcu20230030

• Polymer Chemistry • Previous Articles     Next Articles

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)

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

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