There are several materials for building exterior wall insulation. Introduction of building external wall thermal insulation materials

1. Inorganic thermal insulation materials include foamed cement, foamed ceramics, rock wool, traditional thermal insulation mortar, etc. Inorganic thermal insulation materials have excellent temperature and chemical stability, are non-toxic and non-radioactive, and can prevent the occurrence of cold and hot bridges. Among them, rock wool has the advantages of good heat insulation, sound absorption and fire prevention, and is the main energy-saving material in the fifth conventional energy source.

2. Organic thermal insulation materials include molded polystyrene board, extruded polystyrene board, phenolic foam, rigid polyurethane, etc. Organic thermal insulation materials have low thermal conductivity and large thermal resistance, which can play a good thermal insulation effect. Relatively speaking, their flame retardancy is not very good. Among them, extruded polystyrene board has the advantages of high compressive strength, strong water vapor penetration resistance, good thermal insulation and flame retardant effect, corrosion resistance, convenient construction and long service life.

3. Composite thermal insulation materials include metal sandwich panels, and the core materials are polystyrene particles, vitrified beads, etc. Among them, vitrified beads have the advantages of water absorption, anti-aging, high and low temperature resistance, thermal insulation and so on. They are light aggregates for making thermal insulation mortar, which improves the comprehensive performance and construction performance of thermal insulation mortar. Metal-type thermal insulation plywood is usually made of thermal insulation materials with certain rigidity, such as rock wool, which has the advantages of light weight, convenient installation, thermal insulation and high hardness.