The Property Improvement Of Epoxy Resin By Cage Silsesquioxane Inorganic/organic Hybrid Materials

The compound of cageocta(aminopropyl silsesquioxane)(POSS-NH₂) was prepared in higher yield by the hydrolysis and polycondensation of trifunctional monomer H₂NCH₂CH₂CH₂Si(OC₂H₅)₃, then some inorganic/organic hybrid nano material was prepared through the reaction of cage octa(aminopropyl silsesquioxane)(POSS-NH₂) with n-Butyl glycidyl ether(XY-501)and 1,4-Butanedioldiglycidylether.A series of polyhedral oligomeric silsesquioxane/epoxy nanocomposites (DRT/EP) containing 0 wt%, 5 wt%, 10 wt% and 15 wt% content of inorganic/organic hybrid nano material were prepared. Mechanical properties and thermal properties were used as the index to show the effect the amounts of chain and different functional group on inorganic/organic hybrid nano material.The result showed the DRT₁₂/EP has the good properties,its impact strength and elongation fracture measure up 7KJ/m² and 6.6% when DRT₁₂ content is 15wt%,however DRT₂₂/EP showed the better properties, its impact strength reachs 8.1 KJ/m2 when DRT₂₂ content is 20wt%.And the mechanism of the incorporation of oligomeric silsesquioxane/epoxy nano composites into epoxy networks enhancing the mechanical properties and thermal properties of epoxy was invested by scanning electron microscopy(SEM) and X-ray diffraction(XRD).