Shanxi Datong Steel Structure Lightweight Composite Plate Steel Structure Lightweight Strong Plate Insulation 20 times

Description :

　　Shanxi Datong Steel Structure Lightweight Composite Plate Steel Structure Lightweight Strong Plate Insulation 20 times

　　In order to meet the requirements of energy conservation, fire prevention, environmental protection, etc. in modern buildings, inorganic insulation materials with relevant advantages are increasingly becoming an important direction for the development of energy-saving materials in modern buildings Among them, foam concrete has such excellent characteristics as light weight, heat insulation, sound insulation, incombustibility and earthquake resistance, which can better meet the requirements of building energy conservation and improve building safety, and has become a hotspot of modern building energy conservation research However, due to its low strength, susceptibility to pulverization, and large drying shrinkage, its application in the field of wall materials is limited In order to solve these problems, this research uses foam concrete and calcium silicate board to compound, and develops foam concrete composite wallboard with thermal insulation, fire prevention and other functions. The research focuses on the key problems such as foam concrete pulverization during the preparation of foam concrete composite wallboard, the bonding problem between foam concrete and calcium silicate board, and the cracking problem caused by the inconsistent drying shrinkage of foam concrete and calcium silicate board. The main contents include: first, the degree of pulverization of different foam concrete is tested by appearance comparison and pencil hardness method. By studying the composition of hydration products of foam concrete with different unit weights, the mechanism of ultra light foam concrete pulverization is discussed, and then the improvement of foam concrete is proposed. Measures for the pulverization of concrete The results show that the early rapid water loss of foam concrete is the main reason for its pulverization. The rapid evaporation of water delays the next step of hydration, reducing the content of hydration products, making it difficult to form a good gel structure, which makes some powder particles easy to fall off and form pulverization The lower the volume weight of foam concrete is, the higher the early water loss rate is, and the more serious the pulverization is. The water loss rate of 300kg/m3 foam concrete in the first day of molding exceeds 40%;

　　The inorganic lightweight polymer core material used in the steel skeleton lightweight board solves the problem of low strength and high water absorption of ordinary cement perlite material by adding composite polymer materials. Composite core materials have the characteristics of lightweight, high strength, thermal insulation, sound absorption, non combustion, low moisture absorption, and good material stability. They are not easily aged and have a long service life. They are a new type of inorganic lightweight energy-saving material. Advantages of 2 steel skeleton lightweight panels: 1) Lightweight: Inorganic lightweight polymer core material with a bulk density of less than 600 kg/m3, therefore, the weight of the entire panel is only 30% of that of traditional concrete materials. 2) Thermal insulation: The board has good insulation performance, low thermal conductivity, and a heat transfer coefficient of up to 0.3 W/(m2 · K), which can meet the needs of high-altitude areas. 3) Requirements for building insulation performance: The board has excellent insulation performance. When the outer side of the board is heated to 900 ℃, the temperature inside the board is only 50 ℃. Therefore, this board is an ideal building insulation material for high-temperature areas. 4) Fire resistance: The core material is made of inorganic material, which does not burn, does not burst in fire, and releases non-toxic gases. It is an excellent refractory material. The fire resistance limit of the entire board is greater than 2 hours, meeting the first level fire protection requirements of the components. 5) Waterproof: The board comes with a special polymer anti-seepage coating when it leaves the factory. The polymer anti-seepage wear-resistant coating is a specialized anti-seepage engineering coating, which has better bonding strength and wear resistance than general waterproof materials, thereby improving the service life, reducing replacement costs, and making the produced board have better anti-seepage performance, which is conducive to the protection of the finished product.

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• Steel lightweight composite panel