The Kevlar fibers were treated by ultraviolet light(UV),the influence of treated time on treated effect was investigated.The change of surface structure of Kevlar fibers was studied by SEM technology,the interfa- cial adhesion condition was analyzed and estimated according to interfacial shear strength(IFSS)in the single-fiber composite fragmentation(SFC)test.The results showed that the damage UV treatment brought to Kevlar fibers was not great.However,the specific surface increased in result of improving t...