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The development trend of building materials in building materials factories: building insulation is an important aspect of saving energy, improving living environment and using function. Building energy consumption accounts for 30-40% of the total human energy consumption, most of which is the energy consumption of heating and air conditioning, so building energy conservation is of great significance. And because the heat insulation coating takes water as dilution medium and does not contain volatile organic solvents, it is harmless to human body and environment; its production cost is only about 1/5 of the same kind of foreign products, and as a new heat insulation coating, it has good economic benefits, energy saving and environmental protection, heat insulation effect and simple construction and other advantages. More and more people's attention and favor. And this kind of space insulating and reflecting coating is undergoing a transformation from industrial insulation to building insulation, from thick layer to thin layer, which is also one of the main development directions of insulation materials in the future. Space reflective insulating coatings construct effective thermal barriers by using the vacuum cavity layer formed by ceramic spherical particles in the coatings. They not only have high thermal resistance and low thermal conductivity, but also have high thermal reflectivity, which reduces the absorption of solar radiation heat by buildings and the temperature of the coated surface and interior space. Experts are generally recognized as one of the promising energy-saving materials.
Nowadays, the global thermal insulation materials are developing towards the integration of high efficiency, energy saving, thin layer, heat insulation, waterproof and external protection. While developing new thermal insulation materials and conforming to the technology of structural thermal insulation and energy saving, more attention should be paid to the use of thermal insulation materials, design and construction according to the standard specifications, and strive to improve the thermal insulation efficiency. Cost reduction. Research on thin-layer thermal insulation coatings has been carried out at home and abroad. Several companies in the United States have produced such thermal insulation coatings, such as SPM Thermo-Shield in the United States, Thermal Protective Systems Cemic-Cover, J.H. International Therma-Cover and other products. This kind of space insulating porcelain layer is developed on the basis of NASA's working principle of controlling the heat conduction of the space shuttle. It is suitable for high-pressure spraying, pollution-free, and has good thermal radiation resistance, thin insulation, waterproof and corrosion resistance. The material has been turned to general industrial and civil thermal insulation. And there are also many domestic enterprises in the development of such materials, such as thin-layer reflective coatings, solar reflective heat insulation coatings, water-based reflective heat insulation coatings, heat insulation sunscreen coatings, ceramic heat insulation coatings and so on. Mainly using good weather resistance, water resistance, strong aging resistance, strong cohesion and elasticity, and with insulation fillers, reflective fillers and good solubility of film forming materials, choose lightweight hollow, high temperature, thermal resistance, and has a good reflection and radiation of the filler, refractive coefficient, high surface finish, heat Ultrafine powder with high reflectivity and emissivity is suitable as reflective filler. It forms a low radiation heat transfer layer with film-forming base material, which can effectively cut off heat transfer. This kind of thin-layer heat-insulating reflective coating can be used in buildings, vehicles, ships, petrochemical tank equipment, grain depots, refrigeration stores, containers, pipelines and other different places.
Energy saving building materials