Abstract
AbstractDespite many important industrial applications, epoxy resin (EP) suffers from high flammability. To solve the problem, functionalized graphene oxide with Co‐MOF and phytic acid (ZIF‐67@GO‐PA) was successfully prepared. Subsequently, 2 wt% of ZIF‐67@GO‐PA nano‐hybrids were added into EP. Base on the fire test results, the limiting oxygen index value of EP/ZIF‐67@GO‐PA enhances to 29.4% and its UL‐94 achieves V‐0 rating. Moreover, compared with pure EP, the peak heat release rate and total release rate are dramatically decreased by 57.4% and 25.7%, respectively. In addition, the fire growth index was reduced by 64.0%. These superior fire safety properties are due to the catalytic effect of metal oxide and phosphorous compounds produced during the combustion of ZIF‐67@GO‐PA, and the barrier effect of the graphene oxide. Because the denser char blocks the diffusion of heat during combustion, the fire hazard of EP composites is reduced.
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