Effect of amine-functionalized silica nanoparticles on thermal and mechanical behaviors of DGEBA/IPD epoxy networks

摘要: In this work, diglycidyl ether of bisphenol A (DGEBA) epoxy resin was cured by isophorone diamine (IPD) hardener in the presence amine-functionalized silica nanoparticles. Depending upon aminated (AS) contents, two networks labeled EP/AS-2.5 and EP/AS-5.0 were obtained. The amine functional groups can allow nanoparticles to be covalently incorporated into matrix. Two controls, including network loaded pristine (EP/S-2.5) as well neat network, also prepared via a similar protocol. Thus, thermal mechanical behaviors resulting materials studied function surface characteristics, i.e., hydrophilic vs. organo-modified surface, its loading content. initial decomposition temperatures (T IDT) maximum rate max) improved. AS could enhance storage moduli (E′ values) at high-temperature region. Dynamic analyses showed that amine-functionalization lead superior interaction between DGEBA/IPD networks.