Fireproof door core plate material and preparation process thereof

Abstract

The invention belongs to an inner filling material of a fireproof door, and particularly relates to a fireproof door core plate material for fireproofing and heat insulation and a preparation processthereof. The fireproof door core plate material is prepared from the following raw materials in parts by weight: 300 to 400 parts of Alpha type High-strength gypsum, 3 to 6 parts of tert-acetic emulsion, 0.2 to 1 part of polyvinyl alcohol, 0.05 to 0.1 part of gypsum retarders, 20 to 40 parts of foaming agent water solution, 0.5 to 2 parts of fiber and 100 to 140 parts of water, wherein the weightratio of the foaming agent in the foaming agent water solution to the water in the foaming agent water solution is 1:(70 to 90). The fireproof door core plate material has the advantage that the adverse influence caused by a fireproof door core plate on the quality of a fireproof door can be avoided.

Description

technical field [0001] The invention belongs to an inner filling material for a fire door, and in particular relates to a fire door core plate material used for fire prevention and heat insulation and a preparation process thereof. Background technique [0002] The fire door is filled with a fire door core board, and its main function is to be used for fire prevention and heat insulation. At present, the core board materials of fire doors mainly include magnesite technical materials and high-strength cement foam materials. [0003] Magnesite technical materials are materials made from magnesite materials such as magnesium chloride and magnesium oxide as gelling materials, and expanded perlite as the medium or foaming process. Expanded perlite is a kind of natural acidic glassy volcanic lava. The magnesite technology material with it as the medium has the advantages of good fire resistance and high strength, but it is easy to absorb water, has a high density and is easy to r...

AI Technical Summary

Problems solved by technology

Because wood and plywood are prone to mildew after being exposed to moisture, the fire door core board made of magnesite technology materials will adversely affect the quality of fire doors made of wood and plywood materials

In addition, magnesium chloride and magnesium oxide are used as cementitious materials, which are inherently unstable, require high ambient temperature, and have poor workmanship. Especially for magnesium oxide, there are many small-scale production enterprises, and the active ingredients cannot be guaranteed, which will lead to fire doors. The quality of the core plate material is unstable, which leads to the unstable quality of the fire door

Chloride ions in magnesium chloride and magnesium oxide are highly corrosive to steel, which can easily cause corrosion of steel fire doors, which will also adversely affect the quality of fire doors.

[0004] High-strength cement foam material is a material formed by foaming high-strength cement slurry. Its advantage is that the material is easy to obtain, but its disadvantage is that it is brittle and easy to crack when exposed to heat, which affects the fireproof performance and adversely affects the quality of fire doors. immature craft

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