Abstract
This article researched fly ash-epoxy resin composite properties and microstructure changing with the increase of epoxy resin content. The result show that, when the epoxy resin content increased to 30%, the tensile strength, rupture elongation and impact strength of composite increased to 329%, 168% and 257% respectively compare with the composite of epoxy resin content is 15%, and various properties change little with the epoxy resin content continuous increasing. And the composite formed 2μm or so and uniform distributed micro-pores when the epoxy resin content is 30% and the consistency of micro-pores increasing and some small micro-pores gathered into larger with the epoxy resin content increasing. Considering various properties, the fly ash-epoxy resin composite has the highest cost-effective when the epoxy resin content is 30 ~ 40%.
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