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Abstract

A shear thickening fluid (STF) was prepared from SiO₂/PEG200 by ball-milling and its effect on the sound insulation properties of textile materials investigated. The rheological properties of the STF were evaluated using a high-speed rotary rheometer and a field emission scanning electron microscope. Fabrics based on fibers of profiled cross-section were knitted on a computerized flat knitting machine, then dipped in the diluted STF and the microstructure and the sound insulating properties of the STF-treated fabrics were established using a two-channel acoustic analyzer. It was found that an increase in the SiO₂ content of the STF decreased the critical shear rate, and the thickening effect of the STF system became effective once the SiO₂ content reached 30 wt%. The sound insulation performance of the STF-treated fabrics was superior to that of the untreated fabrics, and their level of sound insulation level was particularly increased with increasing surface density.

Keywords

shear thickening profiled section fiber knit sound insulation

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Effect of shear thickening fluid on the sound insulation properties of textiles

Abstract

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