The application of broken expanded polystyrene particles in thermal insulation coating material

Abstract Thermal insulation coating material is a kind of green thermal insulation material with high efficiency, which is used in the exterior wall of buildings and has many advantages such as strong sticking strength, low heat conductivity, flame retardancy and water resistance. The aggregates, main insulation components, play an important role in the thermal insulation coating material. Expanded polystyrene (EPS) particle is a good material, which can be used as an aggregate for its low thermal conductivity coefficient of 0.029 W/(m·K). Accordingly, by using the broken particles prepared from wasted expanded polystyrene, (EPS), the abandoned resources can be recycled and used again, resulting to the reduction of “white pollution” and cost. In the environment of establishing an economical social, it has huge significance and broad market prospects. Studies have shown that the broken expanded polystyrene particles and expanded perlite have the lowest thermal conductivity according to the weight ratio of 1:2.96. By using wasted expanded polystyrene particles and expanded perlite as aggregates, the thermal insulation coating material has good crack resistance, thermal insulation and compressive strength.