Magnesium oxychloride and magnesium oxysulfate compound cement foam fire door core board and preparation method thereof

Abstract

The invention provides a magnesium oxychloride and magnesium oxysulfate compound cement foam fire door core board and a preparation method thereof. The core board comprises the following raw materials: magnesium oxide, an anhydrous magnesium chloride solution, a magnesium sulfate solution, desulfurization gypsum, superfine carbon fiber, superfine micro-silica, a cationic polyacrylamide solution, ferrous sulfate and an efficient foaming agent, between which the ratio is 100:60:66.6:2:0.8:0.5:0.5:0.5:0.5. The method comprises the following steps: uniformly mixing the anhydrous magnesium chloride solution and the magnesium sulfate solution, adding the anhydrous magnesium chloride solution and the magnesium sulfate solution into a stirring machine, adding the cationic polyacrylamide solution and a ferrous sulfate solution into the stirring machine, and adding superfine carbon fiber, lightly calcined magnesium oxide, desulfurization gypsum, superfine microsilica and a foaming solution in sequence while performing stirring; pushing a stack of moulds, in which foaming slurry is poured, into a curing stove, curing the moulds for 8-10h, and then performing demoulding; and after demoulding, performing moisture preservation and temperature control curing and water control curing respectively until the moisture content is less than or equal to 10%. The core board provided by the invention is environmentally friendly and light, has high-strength and favorable high temperature resistance and meets the national requirements for fire prevention and safety.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a composite foamed fireproof door core board composed of magnesium oxychloride cement and magnesium oxysulfide cement and a preparation method thereof. Background technique [0002] At present, with the development of the national real estate industry, the demand for fireproof building materials is getting wider and higher, and the requirements are getting higher and higher. Fire doors have multiple functions and practicability such as closure, fire resistance, partition, safety, heat preservation, and sound insulation. Fire doors implement a license system. The production of fire doors must obtain a production license issued by the State Fire Protection Administration. The fire door core board is an essential core material for fire doors. It needs to be type-tested by relevant departments in terms of combustion performance and safety performance. As a res...

AI Technical Summary

Problems solved by technology

In addition, rock wool board is not an environmentally friendly product, and the rock wool dust produced by the product after aging is harmful to the human body

Another one is that it cannot satisfy the bonding of high-grade fire doors with flower shapes because of its material problems.

The magnesium oxysulfide cement foam door core board, due to its material characteristics, cannot be produced in an environment where the temperature is lower than 15°C, and is not suitable for the production conditions in Northeast China.