Science Daily February 16, 2023
In this study, a novel and economical green sustained-release microcapsule salt-storage anti-icing agent was prepared by researchers in China using solid waste porous sustained-release skeleton loading organic acetate salt as the core material and styrene-acrylic-acrylate copolymer P(AA-MA-BA-St) as the wall material, which have less corrosiveness and extended the release time. The blast furnace slag and NaHCO3 were selected as the sustained-release skeleton and corrosion inhibitors. The optimal conditions of the synthesis of vesicle wall materials were investigated: 3.8 wt % acrylic acid polymerized at 110 °C with 3 wt % AIBN and for 3.5 h, and the relative ice-snow melting capacity of the prepared sustained-release microcapsule-type anti-icing agent (SMAA) product was 90.8%. The best proportion of the SMAA used to replace a part of the equal mass of mineral powder in the SMA-13 asphalt mixtures was 5.5 wt %, and it could satisfy the requirements of road performance. Compared with adjacent sections of the road without SMAA in winter snowfall, the pilot test section they used had a very good melting effect. According to the researchers the study contributes to the development of long-acting environment-friendly materials for SSAs to reduce the cost of winter road maintenance, and the obtained product has very promising prospects for practical applications… read more. Open Access TECHNICAL ARTICLEÂ
Graphical abstract. Credit: ACS Omega 2023, 8, 5, 4906–4920, January 26, 2023Â