STUDY ON ENERGY ABSORPTION PROPERTIES OF HIGH IMPACT EPOXY RESIN/HGB COMPOSITES ENCAPSULATING MATERIALS

摘要

High performance encapsulating materials for fuze are of vital importance in the process of hard target penetration. This paper studied the dynamic mechanical properties and the energy absorption properties of epoxy resins filled with hollow glass beads (HGB) as the main toughener. First, split Hopkinson pressure bar (SHPB) experiment under different temperature was conducted to obtain the dynamic mechanical properties characterization. Then, the SHPB experiments was modified with short projectile and long specimen with confining pressure to examine the stress attenuation and energy attenuation properties. The stress-strain curve under different temperature was compared and we obtained that the ratio of the peak value of transmitted wave to that of incident wave is about 034-0.38, with the corresponding energy ratio about 0.17-0.19. The results showed that the HGB epoxy resin composites is promising potting materials for electronic-packaging survivability of penetration fuze systems.