Effect of Environmental stress on the mechanical properties of surface treated fly-ash/polyester particulate composite

摘要

Fly-ash(FA)was surface treated with silane coupling agents(CA)vinyltriethoxy silane and aminopropyltrimethoxysilane.Fly-ash/polyester (FA/GPR)and surface treated fly-sah/polyester (FA/CA/GPR)particulate composites were made.The composites were exposed to various adverse environmental conditions such as water,boiling water,salt water,acid,alkali,toluene,weather and freezing-thawing cycles for 30 days.The mechanical properties,ie tensile strength,tensile modulus,elongation at break,flexural strength,flexural modulus,compressive ,strenght,impact strength and mental conditions.The results indicate that the mechanical properties of FA/GPR composites are improved by surface treatment of FA and that their resistance to the various environmental stresses is also enhanced substantially by surface treatment.