Preprint Article Version 1 This version is not peer-reviewed

Synergistic Effect of Graphene Oxide and Mesoporous Structure on Flame Retardancy of Nature Rubber/IFR Composites

Version 1 : Received: 5 May 2018 / Approved: 9 May 2018 / Online: 9 May 2018 (05:50:26 CEST)

A peer-reviewed article of this Preprint also exists.

Wang, N.; Zhang, M.; Kang, P.; Zhang, J.; Fang, Q.; Li, W. Synergistic Effect of Graphene Oxide and Mesoporous Structure on Flame Retardancy of Nature Rubber/IFR Composites. Materials 2018, 11, 1005. Wang, N.; Zhang, M.; Kang, P.; Zhang, J.; Fang, Q.; Li, W. Synergistic Effect of Graphene Oxide and Mesoporous Structure on Flame Retardancy of Nature Rubber/IFR Composites. Materials 2018, 11, 1005.

Journal reference: Materials 2018, 11, 1005
DOI: 10.3390/ma11061005

Abstract

Aiming to improve the flame retardancy performance of natural rubber (NR), we developed a novel flame retardant synergistic agent through grafting of MCM-41 to graphene oxide (GO),named as GO-NH-MCM-41,as an assistant of intumescent flame retardants (IFR). The structure of GO-NH-MCM-41 was characterized by FTIR, TEM and SEM tests, which confirmed that a fine grafting had been applied between GO and MCM-41. The flame retardancy of NR/IFR/GO-NH-MCM-41 composites was evaluated by limited oxygen index (LOI), UL-94 and cone calorimeter test. The LOI value of NR/IFR/GO-NH-MCM-41 reached to 26.3%; the UL-94 ratings improved to V-0 rating. Moreover, the addition of GO-NH-MCM-41 obviously decreased the peak heat release rate (PHRR) and the total heat release (THR) of the natural rubber composites. And the addition of GO-NH-MCM-41 increased the thickness of char residue. The images of SEM indicated the char residue were more compact and continuous. The degradation of GO-NH-MCM-41 based NR composites completed with a mass loss of 35.57% at 600 ℃. The tensile strength and the elongation at break of NR/IFR/GO-NH-MCM-41 composites were 13.9 MPa and 496.7%, respectively. The results of rubber process analyzer (RPA) reached the maximum value, probably due to a better network of the fillers in the matrix.

Subject Areas

natural rubber; GO-NH-MCM-41; graphene oxide; mesoporous; intumescent flame retardants

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