Preparation of UV-curable transparent poly(urethane acrylate) nanocomposites with excellent UV/IR shielding properties

摘要: Abstract Due to the great potential applications, high transparent organic–inorganic nanocomposites have attracted wide attention over past decade. However, it is still a challenge maintain transparency of optical materials due light scattering caused by severely aggregation nanoparticles (NPs) when they are introduced into polymer matrix. In this report, we describe preparation UV-curable poly(urethane acrylate) (PUA) with 3-(trimethoxysilyl)propylmethacrylate (MPS) modified ITO NPs. The FTIR and TGA results confirmed that MPS was grafted surface NPs successfully. It found incorporation not only provided UV shielding ability nanocomposite coatings similar pure PUA, but also exhibited low transmittance near-infrared (NIR) light. And, cutoff wavelength composites in NIR range (800–2500 nm) shifts toward lower as concentration increasing. 0 wt.%, 1 wt.%, 3 wt.%, 5 wt.%, 7 wt.% 9 wt.% at 1500 nm region 91%, 56%, 38%, 31%, 18% 6%, respectively.