Effect of particle size of fumed silica on the puncture resistance of fabrics impregnated with shear thickening fluid

Abstract

This paper presents an investigation into the effect of particle size of fumed silica on the puncture resistance of fabric impregnated with shear thickening fluid (STF). Two different types of STF were fabricated from fumed silica nanoparticles with particle sizes of 12 and 40 nm respectively. The effects of the particle size and weight fraction of the fumed silica on the rheological property were studied. STFs impregnated woven fabrics were fabricated and tested for stabbing resistance. STFs made of fumed silica with large particle size have better shear thickening effect. The stabbing resistant performance of STF impregnated fabrics improved notably with the same number of layers of fabric, and STFs impregnated fabric panels also outperform the untreated fabric panels with the same areal density. The results indicated that STFs made of fumed silica with larger particle size is able to fabricate a lighter soft body armor with higher stabbing protection.

The rheological properties of shear thickening fluid reinforced with ZnO of different friction characteristics

“…As indicated earlier, in most cases, the particle size and the long diameter of clusters of enhanced STF increase with the addition of ZnO. Recently, Grover, [ 41 ] Li [ 42 ] and Lu [ 43 ] suggested that the maximum viscosity decreases with the increase of nanoparticle size in the same volume fraction. The first reason was that the number of nanoparticles in the suspension decreased with the increase of the particle size.…”

Highly-reversible and recyclable zinc metal batteries achieved by inorganic/organic hybrid separators with finely tunable hydrophilic–hydrophobic balance

“…S9, ESI †) along with Zn 2+ well attached with the PTFE network. Further based on the previous reports, [43][44][45][46] FS as a rigid hydrophilic filler has a reinforcing effect on the mechanical properties due to its abundant -OH functional group and high hardness. Second, with regard to the electrical properties, as can be seen from Fig.…”

Fabric Impregnation with Shear Thickening Fluid for Ballistic Armor Polymer Composites: An Updated Overview

“…The benefit of shear thickening behavior of fluids in the mechanical and ballistic applications was reported in numerous studies [ 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 ]. For these studies, a thickening ratio is taken into account in the efficiency of an STF [ 46 ].…”