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Materials, Vol. 11, Pages 1005: Synergistic Effect of Graphene Oxide and Mesoporous Structure on Flame Retardancy of Nature Rubber/IFR Composites

Materials, Vol. 11, Pages 1005: Synergistic Effect of Graphene Oxide and Mesoporous Structure on Flame Retardancy of Nature Rubber/IFR Composites

Materials doi: 10.3390/ma11061005

Authors: Na Wang Miao Zhang Ping Kang Jing Zhang Qinghong Fang Wenda Li

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 to intumescent flame retardants (IFR). 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 26.3%; the UL-94 ratings improved to a V-0 rating. Moreover, the addition of GO-NH-MCM-41 decreased the peak heat release rate (PHRR) and the total heat release (THR) of the natural rubber composites. Furthermore, the addition of GO-NH-MCM-41 increased the thickness of char residue. The images of SEM indicated the char residue was more compact and continuous. The degradation of GO-NH-MCM-41-based NR composites was completed with a mass loss of 35.57% at 600 °C. The tensile strength and the elongation at break of the NR/IFR/GO-NH-MCM-41 composites were 13.9 MPa and 496.7%, respectively. The results of the rubber process analyzer (RPA) reached the maximum value, probably due to a better network of fillers in the matrix.

Authors:   Wang, Na ; Zhang, Miao ; Kang, Ping ; Zhang, Jing ; Fang, Qinghong ; Li, Wenda
Journal:   Materials
Volume:   11
edition:   6
Year:   2018
Pages:   1005
DOI:   10.3390/ma11061005
Publication date:   13-Jun-2018
Facts, background information, dossiers
  • MCM
  • natural rubber
  • Total
  • tensile strength
  • RPA
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