The development trend of insulation materials

Building thermal insulation is an important aspect of saving energy, improving the living environment and use functions. Building energy consumption generally accounts for 30-40% of human energy consumption, and most of it is energy consumption for heating and air conditioning. Therefore, building energy saving is of great significance. And because the thermal insulation coating uses water as the dilution medium and does not contain volatile organic solvents, it is not harmful to the human body and the environment; its production cost is only about 1/5 of similar foreign products, and it is a new type of thermal insulation Coatings have the advantages of good economic benefits, energy saving and environmental protection, heat insulation effect and simple construction, etc., and they have attracted more and more people's attention and favor. And this kind of space thermal insulation reflective coating is undergoing a transformation from industrial thermal insulation to building thermal insulation, from thick layer to thin layer thermal insulation technology, which is also the main thermal insulation material in the future One of the development directions. Space reflective insulation coatings use ceramic spherical particle hollow materials to form a vacuum cavity layer in the coating to construct an effective thermal barrier. Not only has its own thermal resistance large, low thermal conductivity, but also high thermal reflectivity, reducing the building’s exposure to the sun. The absorption of radiant heat reduces the temperature of the coated surface and the internal space, so it is unanimously recognized by experts as one of the promising energy-efficient materials.

Nowadays, the global thermal insulation materials are developing towards the integration of high efficiency, energy saving, thin layer, heat insulation, and waterproof outer protection. While developing new thermal insulation materials and in line with structural thermal insulation and energy-saving technologies, more emphasis is placed on the targeted use of thermal insulation. Insulation materials are designed and constructed in accordance with standard specifications, and strive to improve insulation efficiency and reduce costs. Researches on thin-layer thermal insulation coatings have been launched at home and abroad. Many companies in the United States have produced such thermal insulation ceramic coatings, such as SPM Thermo-Shield of the United States, Ceramic-Cover launched by Thermal Protective Systems, and Therma-Cover of JH International And other products. This kind of space insulation ceramic layer is developed according to the working principle of NASA to control the heat conduction of the space shuttle. It is suitable for high-pressure spraying, pollution-free, and has good heat radiation resistance, thin layer heat insulation, waterproof and waterproof Corrosion and other properties. The material has turned to general industrial and civil thermal insulation. There are also many domestic companies in the development of such materials, such as thin-layer thermal insulation reflective coatings, solar heat reflective thermal insulation coatings, water-based reflective thermal insulation coatings, thermal insulation sunscreen coatings, ceramic thermal insulation coatings and so on. It mainly adopts film-forming materials with good weather resistance, strong water resistance, strong aging resistance, strong adhesion and elasticity, and good compatibility with insulation fillers and reflective fillers. Choose light, hollow, high temperature, Fillers with large thermal resistance, good reflectivity and radiation, ultra-fine powders with high refractive index, high surface finish, high heat reflectivity and emissivity are suitable as reflective fillers, and together with the film-forming base material, they form a low radiation transmission. The thermal layer can effectively cut off the heat transfer. The thin-layer heat-insulating reflective paint combined with porous materials can be used for painting in different places such as buildings, vehicles and ships, petrochemical oil tank equipment, grain storage, cold storage, containers, pipelines and so on.