Syntactic foam appeared in the 1960s, due to enhancement of hollow microspheres in the matrix are well known. Since the hollow microspheres in the material and lead material filling the cell appear, substantially no chemical foaming resin, so that the composite foam is a physical foam, syntactic foam density in the range of relatively large span. Syntactic foam matrix may be a polymer, metal or ceramic.
Hollow glass beads filled matrix resin prepared composite foam belong to a closed cell structure, compared to the open cell structure, which has higher strength and lower water absorption. Matrix resins used in the distribution of density between 1.0 ~ 1.2g / cm3, while lower density filled hollow glass microspheres, typically 0.1 ~ 0.6g / cm3, composite foam density plays a decisive role, but complex It will reduce the strength of the foam density material adverse effect, so the need to control the loading of hollow glass microspheres to balance density and strength of the material.
1969 I.Resuick other first filled with hollow glass beads bisphenol A type epoxy syntactic foam was prepared to study the influence of the material curing agent compression performance.
