Insulation and insulation materials and aerogels were first applied to the spacesuit insulation lining developed by NASA. It has the characteristics of low thermal conductivity, low density, high flexibility, fire prevention and waterproof. Its thermal conductivity at room temperature is 0.018W/(K.m) and absolutely waterproof. Its thermal insulation performance is 3-8 times that of traditional materials. [1-2]
Insulation lining has the characteristics of low thermal conductivity, low density, high flexibility, fire prevention and waterproof.
Light weight, generally 10-96 kg/m3, 20 kg/m3 below felts, 24-48 kg/m3 for medium-hard board, 48-96 kg/m3 for hard board, of which 48 kg/m3 can be used as ceilings, softening point is about 500 degrees C, heat preservation 300 degrees C, the United States use a larger amount, k = 0.9.
Calcium silicate insulation products were developed successfully in the 1970s in China. They have the characteristics of high compressive strength, low thermal conductivity, convenient construction and reusable. They are widely used in power systems.
Most of the production lines in China are small workshops. Later, four production lines have been introduced from the United States. They have advanced technology, fast-dissolving and quick-twisting fibers, and dry needle-punched felt. The quality is stable, and they can withstand 800-1250 degrees C of temperature.
Characteristics: Acidity derivative over 2.0, high temperature resistance, general chemical pipeline 1000 C, must use this material. The dissolution temperature is about 2000 degree C.
The main products are polystyrene foam plastics and polyurethane foam plastics, but there are some problems in the application of building industry. Most of them are used in steel wire mesh sandwich plate and color steel plate composite sandwich plate. Although there are some limitations, they are developing rapidly. With the stricter and stricter requirements of building fire protection on materials, a new subject is put forward for the application of this material.
Thermal insulation materials can collect more waste heat, release it timely and smoothly, and the gradient change is small. It can effectively reduce the loss. Room temperature can be tended, and winter thermal insulation can play a balanced role. In the decoration of new and old buildings, it overcomes the inherent shortcomings of wall cracks, condensation, mildew and peeling, and it is safe and reliable to bond with the base as a whole, with good randomness and no cavity, so as to avoid negative wind pressure tearing and peeling. It can effectively overcome the problems such as the back ribs of plate splicing and the falling off of the deformed tiles with out warping of the Yang angle. The organic matter in the material reacts with the free acid existing in the main wall basement to form a compound, infiltrates into the micro-pore of the main wall, forms a community, ensures the dry cohesion, and improves the wet cohesion retention rate, which has excellent cohesion. Using floating beads, brucite fibers (tubular fibers) and other raw materials, a closed hydrophobic micro-porous cavity structure is formed in the structure, which can be used as the carrier of phase change materials to ensure the long-term practicability of phase change materials.