Yan Weijia, Yang Haowei, Kang Yue, et al. Effects of high-low temperature on protective performance of shear stiffening gel modified ethylene-vinyl acetate foam. Mechanics in Engineering, 2025, 47(4): 1-8. DOI: 10.6052/1000-0879-24-383
Citation: Yan Weijia, Yang Haowei, Kang Yue, et al. Effects of high-low temperature on protective performance of shear stiffening gel modified ethylene-vinyl acetate foam. Mechanics in Engineering, 2025, 47(4): 1-8. DOI: 10.6052/1000-0879-24-383

EFFECTS OF HIGH-LOW TEMPERATURE ON PROTECTIVE PERFORMANCE OF SHEAR STIFFENING GEL MODIFIED ETHYLENE-VINYL ACETATE FOAM

  • Ethylene-vinyl acetate foam (EVA) is widely employed as a cushioning material in bulletproof vests, knee and elbow pads due to its exceptional shock-absorbing capabilities. Our research team has successfully modified EVA by incorporating shear stiffening gel, resulting in EVA/SSG composite foam with enhanced impact protection properties. To investigate the effects of extreme temperature environments on the cushioning performance of EVA/SSG foam, the research team conducted a comprehensive study utilizing dynamic thermomechanical analysis and universal compression testing machines. These tests evaluated the mechanical behavior of EVA/SSG foam across a temperature range from –50°C to 50°C, revealing the temperature-dependent variations in loss modulus, storage modulus, and yield strength of the material.
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