ScholarWorks@중앙대학교

초록

Impacts such as high-velocity ballistic impacts generate shock wave frequencies up to kHz, causing non-penetrating injuries and material failure. Viscoelastomers can dissipate energy through chain relaxation and dissociating interchain interaction. However, polymer chains are easily aligned, which is not suitable as dampers for the kHz shock waves. In this study, ultra-packed viscoelastomer induced by the solvation effect is presented as an effective approach to attenuate high-frequency shock waves. Because there is an energy dissipation mechanism that delays untangling. This mechanism is elucidated by the dissociating interchain interaction and stress relaxation. Therefore, it shows an outstanding damping effect with no fatal damage in the high-muzzle velocity firearms test. Through this study, the quantitative relationship between packing density of entanglements, relaxation energy, and energy dissipation efficiency is provided.

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