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A crosslinked organic/inorganic functionalized graphene containing hybrid engineering to improve the flame retardancy of epoxy resin

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Abstract

A flame retardant precursor named DTDO, which contains phosphorus, nitrogen and silicon, was synthesized and grafted to graphene oxide (GO) to prepare functional graphene oxide (FGO), which was further applied to prepare a crosslinked organic/inorganic hybrid intumescent flame retardant (FGOS) through in situ sol gel process. 3 wt% loading of FGOS can reduce the combustion parameters of inflammable epoxy resin (EP) obviously, such as the heat release rate (28.1% reduction), smoke production rate (19.6% reduction), and average mass loss rate (61.2% reduction). The EP/FGOS-3 sample shows a LOI value of 29.1% and passes UL-94 and V-0 flammability rating, and the char residue increased from 0.3% to 8.5%. The results indicates a significant enhanced flame retardancy of EP, phosphorus, nitrogen, silicon, and GO in FGOS promoted the forming of a compact and porous char layer, thus to prevent further combustion and improve the flame retardancy of EP.

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It was found that EP/FGOS-3 reached UL-94 V-0 rating, and lead to a noticeable decrease of heat release by 28.1 %, smoke production rate by 19.6%, and average mass loss rate by 61.2%.

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Acknowledgements

This work was supported by the Foundation of Jiangxi Provincial Department of Science and Technology (Grant NO. 20202BABL214016, Grant NO. 20224BAB213027); the Foundation of Jiangxi Educational Commission (Grant NO. GJJ210713), and the Opening Project of Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices (NO. PMND202205).

Funding

Foundation of Jiangxi Provincial Department of Science and Technology,20202BABL214016,Mingyang Ma,20224BAB213027,Yuanping Jiang,Foundation of Jiangxi Educational Commission,GJJ210713,Yuanping Jiang,Opening Project of Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices,PMND202205,Yuanping Jiang

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Authors and Affiliations

  1. Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices, School of Chemistry, Biology and Materials Science, East China University of Technology, Nanchang, 330013, People’s Republic of China

    Yuanping Jiang, Lian Liu, Guohang He, Ning Shang, Yingying Xie, Huan Han & Mingyang Ma

  2. State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065, Chengdu, Sichuan, People’s Republic of China

    Xiang Li

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  1. Yuanping Jiang
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  2. Lian Liu
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  3. Guohang He
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Correspondence to Yuanping Jiang.

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Jiang, Y., Liu, L., He, G. et al. A crosslinked organic/inorganic functionalized graphene containing hybrid engineering to improve the flame retardancy of epoxy resin. J Polym Res 30, 114 (2023). https://doi.org/10.1007/s10965-023-03500-4

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