AUTHOR=Kong Qinghong , Zhang Caijiao , Zheng Guolin , Zhang Manman , Zhou Tao , Zhang Junhao 

TITLE=Effect of Graphene Oxide–Modified Cobalt Nickel Phosphate on Flame Retardancy of Epoxy Resin

JOURNAL=Frontiers in Materials

VOLUME=Volume 7 - 2020

YEAR=2020

URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2020.588518

DOI=10.3389/fmats.2020.588518

ISSN=2296-8016

ABSTRACT=In order to effectively improve the flame retardancy of epoxy resin (EP), a novel graphene oxide-cobalt nickel phosphate (GO-NiCoPO3) is successfully synthesized. GO-NiCoPO3 nanoplates are incorporated into EP matrix for preparing EP/GO-NiCoPO3 nanocomposites. The results show that the LOI value of EP/4GO-NiCoPO3 nanocomposites is as high as 30.3%, and UL-94 can reach V-1 rating. The results of micro-combustion calorimeter (MCC) indicate that the THR and PHRR values of EP/8GO-NiCoPO3 nanocomposites are decreased by 41.9% and 23.8% compared with pure EP. This is mainly due to the synergistic barrier effect of GO and NiCoPO3, which together play their own advantages. Meanwhile, EP/GO-NiCoPO3 nanocomposites can form a dense char layer during the burning process, and improve the thermal stability of EP/GO-NiCoPO3 nanocomposites.