อิทธิพลของนาโนซิลิกาต่อสมบัติเชิงกลในนาโนคอมโพสิทอิพ็อกซีเรซินผสมยางธรรมชาติอิพอกไซด์สำหรับประยุกต์ใช้ใบพัดโครน

Abstract

Green nanocomposites of epoxidized natural rubber/epoxy resin/nanoparticles were prepared and characterized to improved impact strength by added epoxidized natural rubber (ENR). To study the type and amount of rubber ENR (ENR 25, ENR 50) in the proportion of 0, 3, 5, 7 and 10 phe (part per hundred of epoxy resin) which are suitable for adding in epoxy resin and improved hardness and mechanical properties of composite by added nanoparticle (nanosilica and nonocellulose). The nanoparticle fillers tested were nanocellulose and nanosilica. Effects of filler loading on mechanical properties and thermal properties were assessed. The nanoparticles were easily dispersed with minimal aggregation for loadings up to 5 phe according to scanning electron microscopy (SEM). The nanocomposites were investigated by thermal gravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), and mechanical testing of impact strength and tensile strength. The results showed that mechanical properties such as impact strength of nanocomposites can be improved by blending in ENR 50 of 5 phe mixed with nanosilica of 3 phe, relative to the baseline green nanocomposite mix. Effects of accelerated aging in UV conditions were evaluated. Accelerated aging improved tensile strength while the other mechanical properties did not change significantly. These nanocomposites are expected to have high wear rates limiting their service life. Keywords: nanocomposites, epoxidized natural rubber, nanosilica, nanocellulose, UAV