Journal
COMPOSITES PART B-ENGINEERING
Volume 176, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2019.107222
Keywords
Aramid fibers; Inorganic tungsten disulfide; Thennomechanical properties; Impact behavior; Non-destructive testing
Funding
- Ministry of Science, Technological Development and Education of Republic of Serbia [TR 34034, TR 36050, TR 34011]
- Israel Science Foundation [339/18, 7130970101, 330/16]
- Innovation Authority KAMIN grant [7130800101]
- Perlman Family Foundation
- Kimmel Center for Nanoscale Science [43535000350000]
- Irving and Azelle Waltcher in honor of Prof. M. Levy grant [720821]
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Impact resistant nanocomposites are recognized as promising in saving lives in the car, skiing and bicycle accidents, preventing the failure of polymer-based prostheses and orthotic devices, as well as for various defense applications. This research reports improved impact and ballistic resistance of composite materials based on p-aramid fabric impregnated with phenolic resin and poly (vinyl butyral) (PVB), reinforced with small amounts of inorganic fullerene-like nanoparticles of tungsten disulfide (IF-WS2) and multiwall inorganic nanotubes (INT-WS2). The evaluation of the tensile testing resulted in significant improvements in the tensile strength (24.7%) and toughness (64.1%) for the composites with the addition of only 0.3 wt% INT-WS2 nanotubes. The impact toughness increased by 35.8%; the back-face deformation depths after shots were reduced by 12%; the absorbed energy of the knife stab 8.5% higher and the deformation depth 40.4% smaller than for the sample without the nanoreinforcement. The reaction of the composite material to shot impact was recorded by high-speed and infrared camera, to observe heating and cooling rates of the sample caused by dissipation of the kinetic energy of the shots.
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