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Enhanced mechanical properties and flame retardant of epoxy resin by using of GOPOS decorated MWCNTs

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Abstract

In this study, the multi-wall carbon nanotubes (MWCNTs) were grafted with Octa (propyl glycidyl ether) polyhedral oligomeric silsesquioxane (GOPOS) to form GOPOS-G-MWCNTs prior to use as an additive for improving the mechanical and the flame-retardant characteristics of the epoxy resin (EP). The surface of MWCNTs was also modified with a silane coupling agent before conducting the grafting reaction. The Fourier-transform infrared spectroscopy technique was applied to confirm the success of the grafting reaction. The epoxy-based composite materials were performed at room temperature using diethylenetriamine (DETA) as a hardener. Many characteristics of these materials were examined such as tensile strength, thermal stability, flammability, and fracture surface morphology. The presence of GOPOS-G-MWCNTs helped to reduce the total heat release, the peak of heat release rate (pHRR), and total smoke release by 68.68, 47.69, and 11.78%, respectively. While the tensile strength and fracture energy were also increased up to 30 and 102% when compared with virgin EP. The good dispersion of GOPOS-G-MWCNTs and char residue effect were considered as the main reasons for these improvements. A mechanism for enhancing flame-retardant behaviors of EP was also proposed .

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Authors and Affiliations

  1. Faculty of Physical-Chemical Engineering, Le Qui Don Technical University, 236 Hoang Quoc Viet, Hanoi, 100000, Vietnam

    Cuong Manh Vu

  2. AQP Pharma, Ha Noi, Vietnam

    Huong Vu Thi

  3. Case Western Reserve University, Cleveland, OH, USA

    Huong Vu Thi

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  1. Cuong Manh Vu
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  2. Huong Vu Thi
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Correspondence to Cuong Manh Vu.

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Vu, C.M., Thi, H.V. Enhanced mechanical properties and flame retardant of epoxy resin by using of GOPOS decorated MWCNTs. Polym. Bull. 79, 4783–4799 (2022). https://doi.org/10.1007/s00289-021-03736-4

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  • DOI: https://doi.org/10.1007/s00289-021-03736-4

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