Effect of coupling agent treatment on dispersing capacity of self-repairing microcapsule material and flexural property of composite laminate

In order to improve the dispersing capacity of the microcapsules in self-repairing composite and its effect on the mechanical property of the composite,two coupling agents namely KH550 and KH560 were applied to the surface modification of the microcapsules,and the dispersing capacity of the self-repairing microcapsules in glass-fiber reinforced plastic(GFRP) and flexural property of fabric thereof were investigated.The results showed that after KH560 treatment,the dispersing capacity of the self-repairing microcapsules in GFRP is enhanced by 64.7%,which is superior to KH550 treated microcapsules.However,the flexural strength of the prepared GFRP is decreased.According to SEM observation,after coupling agent treatment the interface between microcapsule and epoxy bonds well.