Preparation and performance study of modified hollow glass microspheres/epoxy resin composite materials
The hollow glass beads were modified with 3-aminopropyl triethoxy-silane(KH550),γ-glycidyl ether oxy-propyl trimethoxy-silane(KH560)and polydopamine(PDA),respectively.The modified hollow glass beads were analyzed by infrared spectrum,EDS spectrum and microscopic morphology.The interfacial bonding,mechanical properties and hydrostatic pressure resistance of the composites were investigated.The results showed that after modification by silane coupling agent and polydopamine,the hollow glass microspheres had a greater interfacial bonding force with epoxy resin,and the composite materials had high mechanical strength and low water absorption.At a water pressure of 50 MPa,it still maintained an extremely low water absorption rate and could be used in 5 km deep sea.
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