Chemically modified Sb₂O₃, a new member of high solar-reflective material family, incorporating with ASA (acrylonitrile-styrene-acrylate copolymer) for fabrication of cooling composite with lower wetting behavior

In this study, it is observed that antimony trioxide (Sb₂O₃) performs great potential as new solar-reflective additive to cool materials with higher security for its synergistic flame-retarding application. The optimal content of Sb₂O₃ into poly (acrylonitrile-styrene-butyl acrylate) (ASA) resin has been investigated, accompanied with the investigation of the effect of hydrophobic modification on Sb₂O₃ on the composite surface wettability. The cooling effect of the composite incorporated with the addition of 10 wt% modified Sb₂O₃, which has a solar reflectance of 68.4%, is estimated to be 13 °C higher than uncovered device on a summer sunny day. Simultaneously, the water contact angle of the abovementioned sample increases to 97° which is 19° higher than that of the sample introduced with 10 wt% unmodified Sb₂O₃. It is envisioned that widely applicable composited cool materials can be achieved with the assistance of modified Sb₂O₃ particles.