Facile construction of transparent and heat-insulating coatings with ATO nanoparticles and silane-modified polyacrylate latex by redox initiation

In this study, the silane-modified polyacrylate latexes for transparent heat insulating coatings were prepared with organic sulfinic acid derivative sodium salt (FF6M) and tert-butyl hydroperoxide (TBHP) used as redox initiators, which avoid the coagulation effect of residual thermal initiator fragments in polymer latexes on functional heat-insulating filler antimony tin oxide (ATO) nanoparticle dispersion. The as-prepared latexes and commercial ATO dispersion were used to construct transparent heat-insulating coatings for building exterior glass. The TGA characterization confirms the thermal stability of nanocomposite coatings was enhanced by introduction of ATO. UV–Vis-IR spectrophotometer verifies that the obtained ATO composite coating films possessed high transparency while shielding 0 ~ 20% IR light. When 6 wt.% ATO was introduced into the coating, the thermal insulation temperature difference is up to 13.1 °C. The prepared transparent heat insulating coatings are employed for building for saving energy consumption and endowing people with a comfortable life.