Fireproof door core and preparation method thereof

Abstract

The invention discloses a fireproof door core and a preparation method thereof, relating to the field of fireproof door cores. The fireproof door core is prepared from the following raw materials in parts by weight: 16-22 parts of polystyrene fireproof particles, 3-7 parts of expanded vermiculite powder, 8-13 parts of polypropylene fiber, 6-11 parts of hollow glass powder, 10-17 parts of sepiolitefiber, 4-9 parts of kieselguhr, 4-9 parts of talcum powder, 8-13 parts of polyvinyl chloride paste resin, 12-18 parts of water glass, 1-2 parts of a foaming agent, 2-4 parts of a fire retardant and 1.2-2.4 parts of a silane coupling agent. By the coordination effects among the raw materials, the fireproof door core has a good fireproof effect, meanwhile, the raw materials have a good thermal preservation effect and good thermal insulation and sound insulation performance, and is high in size stability and strong in mechanical impact force resistance.

Description

technical field [0001] The invention relates to the field of fire door cores, in particular to a fire door core and a preparation method thereof. Background technique [0002] The fire door core board is the material filled in the fire door. One of the commonly used fire door core boards in the prior art 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, which is not only not waterproof, but also produces a large amount of harmful smoke in case of fire, which has been banned. The other is perlite board. Although it has better thermal insulation and fire protection performance, its strength is very poor. According to some data, the damage rate in the process of transportation and installation is as high as 30%, which not only increases the cost of use, but also affects the quality...

AI Technical Summary

Problems solved by technology

[0002] The fire door core board is the material filled in the fire door. One of the commonly used fire door core boards in the prior art 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 adding organic binder, not only not waterproof, but also its binder will produce a lot of harmful smoke in case of fire, which has been banned

The other is perlite board. Although it has better thermal insulation and fire protection performance, its strength is very poor. According to some data, the damage rate in the process of transportation and installation is as high as 30%, which not only increases the cost of use, but also affects the quality of the board due to its fragility. Fireproof, thermal insulation and sound insulation effects of the board

There is another kind of vermiculite fireproof board, which not only has brittle defects similar to perlite slate, but also has the problems of complicated process and higher price than the above two boards

In addition, since the above-mentioned fire door core filling materials are made of panels first, and then filled between the door panels, there will inevitably be gaps between the core filling materials and the door panels, which will reduce its fireproof performance.

[0003] Chinese patent CN101407401B discloses a floating bead fireproof door core board, which is made of the following raw materials in proportions by weight: 30-50 parts of coal ash, 20-30 parts of carbon stone powder, 10-30 parts of floating beads 20 parts, 5-12 parts of magnesium chloride, 4-8 parts of polyester glue, 2-4 parts of alum, 1-2 parts of potassium permanganate, 1-2 parts of ferrous sulfate, have good fire prevention effect, and the production of fire doors The quality is stable, but there are disadvantages of poor adhesion and poor dimensional stability.

The white cement fireproof door core board produced by the present invention has low bulk density, high strength, low moisture content, low cost (lower than magnesite cement board), good fireproof performance (A1 grade fireproof), excellent sound absorption performance, energy saving and environmental protection , and completely put an end to the phenomenon of "returning halogen" and "returning frost". However, white cement is used as the binder in the present invention, which has the disadvantages of easy cracking and large shrinkage

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