Thermal insulation materials generally refer to materials with a thermal coefficient less than or equal to 0.12. The development of insulation materials is rapid, and adopting good insulation technology and materials in industry and construction can often achieve twice the result with half the effort. Every ton of mineral wool insulation used in a building can save one ton of oil per year.
Material characteristics
Thermal insulation material The thermal insulation measures and material aerogel were first applied to the thermal insulation lining of the space suit developed by NASA. It has the characteristics of low thermal conductivity, low density, high flexibility, and fire and water resistance. Its thermal conductivity at room temperature is 0.018W/(K · m) and it is absolutely waterproof. Its insulation performance is 3-8 times that of traditional materials.
The insulation lining has characteristics such as low thermal conductivity, low density, high flexibility, and fire and water resistance.
Lightweight, generally 10-96kg/m3, felt below 20kg/m3, medium hard board between 24-48kg/m3, and hard board between 48-96kg/m3. Among them, 48kg/m3 can be used as a ceiling, with a softening point of around 500 ° C and insulation of 300 ° C. It is widely used in the United States, k=0.9。
Calcium silicate insulation products were successfully developed in China in the 1970s, with high compressive strength, low thermal conductivity, easy construction, and reusable characteristics. They are widely used in power systems.
Most of the production in China is carried out in small workshops, and four production lines have been introduced from the United States successively. The process technology is advanced, with instant spinning into fibers and dry needle punched felt. The quality is stable and can withstand temperatures of 800-1250 ° C.
Characteristics: Acidity derivative of 2.0 or above, high temperature resistance, generally used for chemical pipelines at temperatures over 1000 ° C, this material must be used. The melting temperature is around 2000 ° C.
The main products are polystyrene foam plastic and polyurethane foam plastic, but there are problems in the application in the construction field. Commonly used for steel wire mesh sandwich panels and color steel plate composite sandwich panels, although there are certain limitations, they have developed rapidly. With the increasingly strict requirements for building fire protection materials, new issues have been raised for the application of this material.
Thermal insulation materials can collect excess heat, release it smoothly and timely, with small gradient changes, effectively reducing losses, and can balance room temperature and winter insulation. Overcoming inherent deficiencies such as wall cracks, condensation, mold, and peeling in the decoration of new and old buildings; And it is safe and reliable to bond with the substrate as a whole, with good flexibility and no cavities, avoiding tearing and detachment under negative wind pressure. Effectively overcome problems such as rib and corner outward warping deformation and brick detachment after panel splicing. Organic compounds in the material react with free acids present in the main wall substrate to form compounds that penetrate into the micropores of the main wall, forming a community that ensures dry adhesion and improves wet adhesion retention, resulting in excellent adhesion. By selecting raw materials such as floating beads and brucite fibers (tubular fibers), a closed hydrophobic microporous cavity structure is formed in the structure, which serves as a carrier for phase change materials and ensures their long-term practicality.