Chlorine magnesium cement compound foaming insulation board and preparation method thereof

Abstract

The invention discloses a chlorine magnesium cement compound foaming insulation board and a preparation method thereof. The chlorine magnesium cement compound foaming insulation board is made from the following raw materials: magnesium oxide, magnesium chloride, water, coal ash, water-retaining agent, water repellent, modifying agent, fiber, polyphenyl granules and foaming agent. The preparation method comprises the following steps of pouring the magnesium oxide, the coal ash, the water-retaining agent, the water repellent and the fiber into a mixer to form a dry powder material; adding the magnesium chloride and the modifying agent into water to form a liquid material, and adding the dry powder material into the liquid material to form a mixture; pouring the polyphenyl granules into the mixture, mixing until mixture liquid wraps up the polyphenyl granules evenly so as to obtain a paste; adding the foaming agent to manufacture a foam paste; pouring the foam paste into a mould, wherein glass fiber grid cloth is paved at the bottom of the mould; after the mould is filled, paving a layer of glass fiber grid cloth on the upper layer of the foam paste, pressing and moulding the foam paste; and finally hardening, form stripping and maintaining. The chlorine magnesium cement compound foaming insulation board disclosed by the invention has the characteristics of lighter weight, heat insulation, durability, fire resistance and environment protection, and also has excellent mechanical properties.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a magnesium chloride cement composite foam insulation board and a preparation method thereof. Background technique [0002] The promotion and application of building energy-saving wall insulation technology and products in my country started in the mid-1980s. After years of development, my country's building energy-saving external wall insulation market has developed into an industry with various types, diverse technical structures, and huge product demand. [0003] At present, the commonly used external wall insulation materials mainly include polystyrene board, polyurethane foam material, phenolic board, rock wool board, foamed cement board, etc. Currently commonly used external wall insulation materials generally have the following problems: [0004] 1. Polystyrene boards and polyurethane foam materials have poor durability and poor fire resistance. It is difficult to meet C...

AI Technical Summary

Problems solved by technology

[0004] 1. Polystyrene boards and polyurethane foam materials have poor durability and poor fire resistance. It is difficult to meet Class A fire protection requirements, and there are serious safety hazards. In recent years, many fires caused by building external insulation materials have been caused by polystyrene boards and polystyrene. The ammonia grease foaming material was caught on fire, causing serious casualties and property losses;

[0005] 2. Phenolic boards have disadvantages such as high rigidity, easy breakage, easy pulverization, low bonding strength, and poor dimensional stability;

[0006] 3. Rock wool, mineral wool, and glass wool have high water absorption, low tensile strength, poor wind pressure resistance, are not environmentally friendly, and have certain harm to the human body;

[0007] 4. Foamed cement board has poor dimensional stability and high brittleness. It is easily damaged during transportation and use, and it is not easy to make large sizes. There are too many board seams during construction, which is easy to crack and seep water; in addition, the supply of ordinary Portland cement in my country is tight. , the price of cement keeps rising, so using ordinary portland cement as glue to produce cement boards, the production cost is also rising