Abstract
In this study, the ballistic and cushioning behavior of Pure Shear Thickening Fluid (PSTF) and Treated Shear Thickening Fluid (TSTF) impregnated 3D glass fabrics were investigated by using a gas gun and drop-weight impact test, respectively. The PSTF was prepared by dispersing fumed silica nanoparticles in PEG in the mass fraction of 30 wt%, and the TSTFs were prepared in the mass fraction of 30 wt%, 40 wt%, 50 wt%, and 60 wt% by modifying the PSTF and treating the silica surface with 3-Aminopropyl triethoxysilane (APTES). The drop-weight impact test results showed that the applied impact force on the five-ply TSTF impregnated sample is less than the force applied on the five-ply PSTF impregnated sample in the same mass fraction (30 wt%) and this sample demonstrates better-cushioning performance. The five-ply 3D glass fabric impregnated with the TSTF 50 wt% demonstrated the best cushioning performance and reduced the applied peak force by 35% and 60% respectively, compared to the five-ply neat sample and the steel plate (rigid test case). According to the ballistic test, the penetration depth was decreased by impregnating the samples with the PSTF 30 wt%. By modifying the silica and using the high concentration TSTFs (up to a concentration of 50 wt%), the ballistic resistance of the samples was increased. However, the ballistic performance of the TSTF 60% impregnated did not show much improvement.
Published Version
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