Abstract

In this research, epoxy polyurethane-nano silica nanocomposites have been synthesized using an in-situ method, for which SiO2 nanocomposites had been initially ready in N, N-dimethylformamide (DMF) via a Stober procedure, and after that, their surfaces have been altered by 3-Methacryloxypropyltriemethoxysilane (MPS); the resultants have been distinguished by using of FT-IR and FESEM analyses. Furthermore, Novolac epoxy resin (EP) has been equipped with epichlorohydrin and Novolac in the alkaline environment, in contrast, epoxy acrylate resin (EA) has been manufactured based on the ring-opening reaction of EP which samples had been identification through FT-IR and HNMR. In the following, we have exposed the modified MPS-SiO2 nanoparticles to electro sonic waves in DMF solvent and had the monomers of acrylate and the initiator of azo-bis-isobutyronitrile (AIBN) added in a uniform and dropwise manner, leading to the occurrence of in situ polymerization. The synthesized nanoparticles have been characterized utilizing TGA, FT-IR, XRD, and SEM/EDX analysis. According to the XRD pattern, the SiO2 nanoparticles contain a high crystallinity and an average size of about 10 nm. The obtained results have indicated that the thermal resistance of polyurethane can be enhanced by adding up to 5 of core-shell nanoparticles.