Flame-retardant core material and preparation method thereof

Abstract

The invention provides a flame-retardant core material. The flame-retardant core material is at least prepared from the following components in parts by weight: 10-15 parts of caustic calcined magnesia powder, 10-15 parts of aluminum hydroxide, 10-20 parts of refractory ceramics, 30-50 parts of an expaned flame-retardant material containing silicon, nitrogen and phosphorus, 10-15 parts of attapulgite, 3-8 parts of tricresyl phosphate, 5-10 parts of carboxymethyl cellulose, 1-2 parts of a dispersant, 1.5-2 parts of a defoamer, 30-50 parts of solvent naphtha, and 5-15 parts of dimethyl siliconeoil. The invention further provides a preparation method of the flame-retardant core material. The flame-retardant core material is simple in preparation processes, easy to realize large-scale production and good in flame-retardant effects.

Description

technical field [0001] The invention belongs to the field of flame-retardant materials, and in particular relates to a flame-retardant core material and a preparation method thereof. Background technique [0002] A fire door is a door that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. It is a fire-resistant partition with certain fire resistance located in fire compartments, evacuation stairwells, vertical shafts, etc. In addition to the function of ordinary doors, fire doors also have the function of preventing the spread of fire and smoke. It can prevent the spread of fire within a certain period of time and ensure the evacuation of people. [0003] The fire door core board is the material filled in the fire door. As the core material of the steel fire door, one is aluminum silicate cotton board. The production process requires high temperature sintering to make cotton, which has the defects of hi...

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Problems solved by technology

[0003] The fire door core board is the material filled in the fire door. As the core material of the steel fire door, one is aluminum silicate cotton board. The production process requires high temperature sintering to make cotton, which has the defects of high energy consumption and environmental pollution. , especially its board is formed by the added organic binder, not only is not waterproof, its binder produces a lot of harmful smoke in case of fire, it has been banned; the other is perlite board, although it has non-combustible, light weight, sound insulation , heat insulation and other advantages, but expanded perlite is a substance with a small density and is easy to generate dust during the production process. Severe dust pollution will cause damage to human health. At the same time, its strength is very poor. Some data show that its transportation The damage rate during installation and installation is as high as 30%, which not only increases the cost of use, but also affects the fireproof, heat preservation and sound insulation effects of the board due to its fragility; there is also a vermiculite fireproof board, which not only has perlite-like The brittle defect of slate also has the problem of complex process and higher price than the above two kinds of plates; another is the mixed molding of magnesite material and foaming agent, which is the material selected by most fire door enterprises now, but its existence Problems such as easy deformation, back brine, hardness drop, etc.

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