• 文献标题:   Effect of a Novel Graphene on the Flame Retardancy and Thermal Degradation Behavior of Epoxy Resin
  • 文献类型:   Article
  • 作  者:   WANG JB, WU XT, ZHOU RF, HAN WJ, HAN XS
  • 作者关键词:   epoxy resin, graphene oxide, p, si flame retardant, thermal degradation
  • 出版物名称:   JOURNAL OF MACROMOLECULAR SCIENCE PART BPHYSICS
  • ISSN:   0022-2348 EI 1525-609X
  • 通讯作者地址:  
  • 被引频次:   2
  • DOI:   10.1080/00222348.2022.2127266 EA SEP 2022
  • 出版年:   2022

▎ 摘  要

The effect of graphene modified with a phosphorus and silicon-containing compound (GO-DOPO-V) on the flame retardancy and thermal stability of epoxy resin (EP) was studied by cone calorimetry and thermogravimetric analysis (TGA) in nitrogen. After incorporation of 2 wt% GO-DOPO-V into EP, maximum decreases of 28.8% in peak heat release rate (pHRR) and 15.6% in total heat release (THR) were achieved compared to that of pure EP. It was shown that GO-DOPO-V significantly promoted the formation of an EP tight char layer and the char residue of EP/GO-DOPO-V composite at 600 degrees C was 13.39 wt%, which was almost twice that of pure EP. Furthermore, the non-isothermal degradation behavior of EP/GO-DOPO-V composites were investigated also in a nitrogen atmosphere. It was found that the addition of GO-DOPO-V changed the degradation behavior of EP composites in the early and middle stages. Both the Kissinger and Flynn-Wall-Ozawa methods revealed that the addition of GO-DOPO-V increased the thermal degradation activation energy of EP, and improved the flame retardancy of the polymer matrix.