The stab resistant properties of Kevlar/STF composites

Jinhua Zhao; Hailin Cao; Xia Li; Junxi Wan; Kun Wang; Jinfeng Zhang

doi:10.1117/12.923169

12 April 2012 The stab resistant properties of Kevlar/STF composites

Jinhua Zhao, Hailin Cao, Xia Li, Junxi Wan, Kun Wang, Jinfeng Zhang

Proceedings Volume 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering; 84091L (2012) https://doi.org/10.1117/12.923169
Event: Third International Conference on Smart Materials and Nanotechnology in Engineering, 2011, Shenzhen, China

Abstract

A colloidal shear thickening fluid (STF) was prepared by dispersing submicron silica particles in Polyethylene glycol 200(PEG200) with ball-milling technique. Kevlar/STF composites were fabricated by soaking Kevlar in the solution of STF diluted by ethanol. The rheological behavior of the fluid with various concentrations and the effect of dilution ratio on stab resistant properties of Kevlar/STF composites were studied. The result shows that the initial viscosity and the highest viscosity of the fluid increase as the weight fraction of SiO₂ increasing with the weight fraction ranging from 50% to 60%, while the critical shear rate decrease as the weight fraction increasing. The fluid has notable shear thickening behavior at SiO₂ weight fraction of 59%. Two solutions with 1:0.5 and 1:1weight ratio of STF:ethanol were used to fabricate Kevlar/STF composites. It is found that the composites fabricated by solution with dilution ratio 1:1 show better stab resistant properties. The Kevlar/STF composites exhibit better stab resistant properties than the neat Kevlar with the same areal density.

Citation Download Citation

Jinhua Zhao, Hailin Cao, Xia Li, Junxi Wan, Kun Wang, and Jinfeng Zhang "The stab resistant properties of Kevlar/STF composites", Proc. SPIE 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering, 84091L (12 April 2012); https://doi.org/10.1117/12.923169

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