Epoxy resin composites with flame retardancy and thermal conductivity: Effect of graphene nanoplatelets hybridized with melamine phosphate

JIA Xi'ning; WANG Yan; SHI Hui; QU Hongqiang; HAO Jianwei

doi:10.13801/j.cnki.fhclxb.20220415.003

Volume 40 Issue 3

Mar. 2023

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JIA Xi'ning, WANG Yan, SHI Hui, et al. Epoxy resin composites with flame retardancy and thermal conductivity: Effect of graphene nanoplatelets hybridized with melamine phosphate[J]. Acta Materiae Compositae Sinica, 2023, 40(3): 1395-1405. doi: 10.13801/j.cnki.fhclxb.20220415.003

Citation:

JIA Xi'ning, WANG Yan, SHI Hui, et al. Epoxy resin composites with flame retardancy and thermal conductivity: Effect of graphene nanoplatelets hybridized with melamine phosphate[J]. Acta Materiae Compositae Sinica, 2023, 40(3): 1395-1405. doi: 10.13801/j.cnki.fhclxb.20220415.003

Citation:

JIA Xi'ning, WANG Yan, SHI Hui, et al. Epoxy resin composites with flame retardancy and thermal conductivity: Effect of graphene nanoplatelets hybridized with melamine phosphate[J]. Acta Materiae Compositae Sinica, 2023, 40(3): 1395-1405. doi: 10.13801/j.cnki.fhclxb.20220415.003

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Epoxy resin composites with flame retardancy and thermal conductivity: Effect of graphene nanoplatelets hybridized with melamine phosphate

doi: 10.13801/j.cnki.fhclxb.20220415.003

JIA Xi'ning^1
,,
WANG Yan¹,
SHI Hui¹,
QU Hongqiang^{2
,
,},
HAO Jianwei^{1
,
,}

1.
National Engineering Technology Research Center of Flame Retardant Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
2.
School of Chemistry and Environmental Science, Hebei University, Baoding 071002, China

Received Date: 2022-02-21
Accepted Date: 2022-04-10
Rev Recd Date: 2022-03-27

Available Online: 2022-04-20

Publish Date: 2023-03-15

Abstract

Abstract

The development and preparation of low-cost, defect less and high-efficiency graphene nanoplatelets hybrid flame retardant is of great significance to achieve the multifunctionality of composites. A graphene nanoplatelets hybrid melamine phosphate flame retardant (GMP) with flame retardant and thermal conductivity was prepared by the reaction of powder graphite (GRA) with phosphoric acid liquid phase after mechanical ball milling with melamine as a stripping agent. The morphology, structure, composition and thermal stability of GMP were characterized. The flame retardant, thermal decomposition and thermal conductivity of GMP epoxy resin (EP) composites were studied. Thermogravimetric analysis show that the initial decomposition temperature of GMP increases 29.3℃ from melamine phosphate (MP), which matches more with EP, contributing to the improvement of flame retardant efficiency of this EP composites. The results show that when the addition of GMP reaches 30wt%, EP composites achieve the limit oxygen index of 30.4%, the vertical combustion of UL 94 reached V-0 level, the peak heat release rate (PHRR) decreases by, and the peak smoke release rate (PSPR) decreased by 69% and 74.0% respectively. The thermal conductivity increases to 2.10 W·m⁻¹·K⁻¹, which is increased by 708% compared with EP. This is because the interaction between graphene nanoplatelets (GNPs) and MP in GMP promote the formation of dense expanded carbon layer on EP, which effectively improves the flame retardancy of EP composites. With the increase of GMP content, the thermal conductivity of EP composite is improved by the formation of GNPs and graphite heat transfer channel. The research provides an idea for the design and preparation of graphene nanoplatelets hybrid flame retardants with both flame retardancy and thermal conductivity to solve the fire hazard caused by thermal deposition of EP composites.
- graphene nanoplatelets,
- melamine phosphate,
- epoxy resin,
- flame retardancy,
- thermal conductivity
Long Abstrsct
Innovation Points

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References(40)

References

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