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The stab resistant properties of Kevlar/STF composites

  • Jinhua Zhao
  • , Hailin Cao*
  • , Xia Li
  • , Junxi Wan
  • , Kun Wang
  • , Jinfeng Zhang
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publicationThird International Conference on Smart Materials and Nanotechnology in Engineering
DOIs
StatePublished - 2012
Externally publishedYes
Event3rd International Conference on Smart Materials and Nanotechnology in Engineering - Shenzhen, China
Duration: 5 Dec 20118 Dec 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8409
ISSN (Print)0277-786X

Conference

Conference3rd International Conference on Smart Materials and Nanotechnology in Engineering
Country/TerritoryChina
CityShenzhen
Period5/12/118/12/11

Keywords

  • Composites
  • Dilution ratio
  • Kevlar
  • Shear thickening fluid
  • Submicron silica particles

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