Research Status and Application of External Wall Thermal Insulation Materials

The functional performance,application situation,and problems of commonly used building exterior insulation materials are summarized,which includes organic kind(EPS,XPS,PU,PF) and inorganic kind(rock wool,foam glass,foam concrete).The advantages of organic heat preservation materials are low coefficient of thermal conductivity and good heat preservation performance.However,these materials have flammability,low fire rating,bad safety performance,and the need for flame retardant treatment.While,inorganic heat preservation materials have nonflammability,high fire rating,and good safety performance.Nonetheless,their thermal insulation properties are not as superior as organic heat preservation materials.Therefore,researchers need to develop low coefficient of thermal conductivity of inorganic heat preservation materials.As a result,relying on its low coefficient of thermal conductivity and outstanding comprehensive performance,inorganic thermal insulation materials will become the best choice of building insulation materials in the future.