Magnesium oxide inorganic foamed fireproof board and manufacture method thereof

Abstract

The invention provides a magnesium oxide inorganic foamed fireproof board and a manufacture method thereof. The magnesium oxide inorganic foamed fireproof board is prepared from magnesium oxide, calcium sulfate hemihydrate, polypropylene ultrafine fibers, perlite, an efficient improvement additive, a solution and a water-soluble forming agent. The manufacture method of the magnesium oxide inorganic foamed fireproof board comprises: pouring the above raw materials into a template coated with a releasing agent, and tamping and flattening the template; maintaining the template at the temperatureof 35 DEG C for 8-10 hours and stripping; and stacking and standing the template for 72 hours, sawing the template and polishing the template to obtain the fireproof board. The fireproof board can bemodified to form inorganic gelled materials, has the characteristics of high strength, light weight, low cost and high refractoriness, has a chloride ion content of 1%, an air-dry shrinkage of 0.4 mm / m, a bulk density of 300-330 kg / m<3> and a fire resistance limit of 180 minutes, can be subjected to dry carving, saves magnesium chloride by 20%, reduces the cost by 20% compared with similar products, can eliminate the anti-halogen properties of magnesium oxychloride cement, guarantees the reaction temperature equilibrium, and belongs to pollution-free products which are popularized and developed by the fireproof department of the ministry of the public security in China.

Description

technical field [0001] The invention belongs to the technical field of building materials and products, and in particular relates to an inorganic foamed light-weight fireproof board made of silicon and magnesium for energy saving and fireproofing and a preparation method thereof. Background technique [0002] With the improvement of people's living standards and quality of life, the fire protection requirements of public places and the consideration of personal and material safety, the requirements for the fire performance of building materials are getting higher and higher. For example, the door is an indispensable part of the composition of the building. It has multiple functions such as closure, safety, heat preservation, and sound insulation, as well as practical and decorative features. It also emerged as the times require, and has been increasingly valued by the relevant parties in the country and society. [0003] Although the fire doors produced at the beginning wer...

AI Technical Summary

Problems solved by technology

[0004] At present, domestic fireproof board manufacturers mostly use aluminum silicate cotton board, expanded perlite board, vermiculite board, polyurethane foam board, and sulphoaluminate cement board as the fire door core board, but due to the high quality of these materials, resulting in The weight of the fire door is too large, the load of the door is too heavy, the service life is shortened, the production and use costs are too high, and some materials have poor fire resistance, some materials have low strength and heavy damage, and some have complicated manufacturing processes and the price is too high ; It was even found that some materials actually contain toxic and harmful substances, which pose a potential threat to the human body and the environment, and have been banned from use. Therefore, the promotion and use of the above-mentioned fire door core panels have been restricted to a certain extent.