CN109098302B - An intumescent metal fire blocking board - Google Patents

Abstract

The invention discloses an intumescent metal fireproof blocking board, which comprises a base material, a high-expansion fireproof coating and a fireproof coating layer stacked in sequence, and the base material is a galvanized steel sheet; the high-expansion fireproof coating Coated on the base material, the high-expansion fireproof coating is composed of a colloidal resin, a flame retardant and a diluent; the fireproof coating layer is coated on the high-expansion fireproof coating. The intumescent metal fireproof blocking board of the invention uses galvanized steel sheet as the base material, which ensures the strength of the fireproof blocking board, improves the load-bearing capacity, and avoids secondary damage caused by the collapse of buildings; no flying flocs are generated in the production process, reducing the Environmental pollution and damage to workers'health; the blocking plate is coated with a fireproof layer based on galvanized steel sheet, with less damage and low defective rate, which reduces the production cost; the thickness of the plate is very thin, which saves the installation space and reduces the transportation cost.

Description

An intumescent metal fire blocking board

technical field

The invention relates to the technical field of fire blocking, in particular to an intumescent metal fire blocking board.

Background technique

At a time when the demand for land is becoming more and more severe, the modern construction industry is separated from the traditional brick and wood structure, and the whole building is poured with concrete to increase the height of the building. Once a fire breaks out in the building, the fire will be transferred through the joints of the curtain wall, cable penetrations and various pipes, further expanding the fire. The difficulty of escape of personnel poses a great threat to the life safety of residents. Therefore, in order to effectively limit the spread of the fire and the toxic fumes generated in the fire, so as to protect the safety of personnel and equipment in areas other than the fire source, fire blocking technology has emerged as the times require. At present, the fire blocking boards used in the market are mainly mineral wool boards and rock wool boards. Such fire blocking boards are limited by their own materials during use, have insufficient strength, limited load-bearing capacity, and are squeezed by heavy objects. It is easy to collapse and cause secondary damage; mineral wool boards and rock wool boards produce flying flocs during the production process, which are easy to migrate in the environment and cause air pollution, and at the same time threaten the life and health of workers; both mineral wool boards and rock wool boards are It is formed by the bonding of granular materials with viscose. Due to the large pores between the particles, it is easy to be damaged in the production process, the defective rate is high, and the production cost is high; when the mineral wool board and rock wool board are used for fire blocking The thickness is large, the installation space is large and the transportation cost is high.

SUMMARY OF THE INVENTION

Aiming at the problems existing in the prior art that the strength is not strong enough to be easily collapsed, the production of flying floes to pollute the environment and threaten the life and health of workers, the high production cost of easy breakage, and the large thickness and installation space, and the high transportation cost, the present invention discloses an intumescent metal fireproof A plugging board, which includes a substrate, a high-expansion fireproof coating and a fireproof cladding layer stacked in sequence, and the base material is a galvanized steel sheet; Resin, flame retardant and diluent; fire cladding layer is coated with high expansion fire retardant coating.

Further, the thickness of the intumescent metal fire blocking board is between 1.7 and 2.3 mm.

Further, the high expansion fireproof coating is composed of 40% by mass of colloidal resin, 53.5% of flame retardant and 6.5% of diluent.

Further, the colloidal resin is an acrylate copolymer resin.

Further, the flame retardant is composed of low temperature expandable graphite, magnesium hydroxide, aluminum hydroxide, zinc borate, ammonium polyphosphate and monopentaerythritol.

Further, the diluent is ethyl acetate.

Further, the intumescent metal fire blocking board is connected with the building through anchor bolts.

Further, the fireproof coating layer is aluminum foil glass fiber cloth.

Compared with the prior art, the present invention can obtain the following technical effects:

The intumescent metal fireproof blocking board of the invention uses galvanized steel sheet as the base material, which ensures the strength of the fireproof blocking board, improves the load-bearing capacity, and avoids secondary damage caused by the collapse of the building; no flying flocs are generated during the production process, reducing the Environmental pollution and damage to workers' health; the blocking plate is coated with a fireproof layer based on galvanized steel, with less damage and low defective rate, which reduces production costs; the thickness of the plate is very thin, which saves installation space and reduces transportation cost.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the attached image:

FIG. 1 is a schematic structural diagram of an intumescent metal fireproof blocking board of the present invention.

Detailed ways

Various embodiments of the present invention will be shown in the drawings below, and for the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the invention, these practical details are unnecessary. In addition, for the purpose of simplifying the drawings, some well-known structures and components will be shown in a simple schematic manner in the drawings.

It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, rear, etc., are only used to explain the relative positional relationship between the various components in a specific posture as shown in the accompanying drawings, Movement conditions, etc., if the specific posture changes, the directional indication also changes accordingly.

In addition, descriptions such as “first”, “second”, etc. in the present invention are only for the purpose of description, and do not refer to the meaning of order or sequence, nor are they used to limit the present invention. The components or operations are described by the same technical terms, and should not be construed as indicating or implying their relative importance or implying the quantity of the indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that the combination of technical solutions does not exist. , is not within the scope of protection required by the present invention.

The invention provides an intumescent metal fire blocking board, which is applied to the technical field of fire blocking, and isolates the fire source from the outside when a building is on fire, so as to prevent the fire expansion from threatening the life and health of personnel. Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of an intumescent metal fireproof blocking board of the present invention. As shown in the figure, the intumescent metal fireproof blocking board of the present invention includes a substrate 1 , a high expansion fireproof coating 2 and a fireproof coating layer 3 stacked in sequence. The base material 1 is a galvanized steel sheet, the high expansion fireproof coating 2 is coated on the base material 1, and the high expansion fireproof coating 2 is composed of a colloidal resin, a flame retardant and a diluent. The fireproof cladding layer 3 is coated on the high expansion fireproof coating 2 to prevent the high expansion fireproof coating 2 from directly contacting the environment, causing damage to the high expansion fireproof coating 2, thereby affecting the fireproof performance.

The present invention uses galvanized steel sheet as the base material 1 to ensure the strength of the intumescent metal fireproof blocking board of the present invention, improve the load-bearing capacity, and will not cause secondary damage to the environment and personnel due to insufficient strength of the sheet due to heavy collapse; Zinc will form a dense protective layer on the surface of the steel. When the galvanized layer is damaged, the galvanized layer can prevent the corrosion of the substrate 1 and protect the substrate 1 through cathodic protection. The process will not cause the disintegration of the galvanized steel sheet, with less damage and low defective rate.

The thickness of the intumescent metal fireproof sealing board of the present invention is between 1.7 and 2.3 mm. Compared with the existing sealing boards made of mineral wool boards and rock wool boards, the intumescent metal fireproofing sealing board of the present invention has The thickness of the blocking board is very thin. On the premise of ensuring the fireproof performance and the strength of the blocking board, the installation space is saved, and the amount of the blocking board that can be transported at one time is greatly increased during the transportation process, which reduces the transportation cost.

The high-expansion fireproof coating 2 of the present invention is composed of 40% by mass of colloidal resin, 53.5% of flame retardant and 6.5% of diluent. The viscosity of the colloidal resin is very high. Dilute the colloidal resin, and stir and mix the colloidal resin and the flame retardant. The flame retardant adheres to the colloidal resin to form a flame retardant micelle, and the flame retardant micelle is firmly connected by the strong adhesive force of the jelly resin, and the volume continues to increase to form a fireproof coating.

The colloidal resin of the high-expansion fireproof coating 2 in the present invention is an acrylate copolymer resin, and the acrylate copolymer resin has strong adhesive force, excellent heat resistance, chemical resistance and water resistance, and can be well adapted to the fireproof layer. Production requirements.

The flame retardant of the high-expansion fireproof coating 2 in the present invention is composed of low-temperature expandable graphite, magnesium hydroxide, aluminum hydroxide, zinc borate, ammonium polyphosphate and monopentaerythritol. Fire factor. Among them, the low-temperature expandable graphite has a low initial expansion temperature, and has the characteristics of large expansion volume and small mass loss after heating. It expands when heated at a lower temperature, changing from the original scale shape to the worm shape, forming a low-density thermal insulation. layer, effectively insulates and reduces heat conduction. When magnesium hydroxide and aluminum hydroxide are thermally decomposed at high temperature, bound water is generated, which is non-polluting to the environment. The generated bound water absorbs environmental heat, reduces the temperature of the surface of the substrate, and reduces the heat introduced into the adjacent space through the substrate. It reduces the possibility of spontaneous combustion in the adjacent space due to the increase in temperature; at the same time, the generated flammable gas is cooled in combination with the heat absorption process of water, so as to prevent the generated flammable gas from burning at high temperature and cause an explosion and expand the danger; magnesium hydroxide and The aluminum oxide or magnesium oxide produced by the decomposition of aluminum hydroxide will form a stable coating on the surface of the substrate to further block the conduction of heat. Zinc borate is decomposed by heat to generate bound water, which absorbs heat to reduce the ambient temperature while diluting the oxygen in the air, which inhibits the fire in the fire zone. Zinc borate decomposes to form boron oxide, which forms a coating on the surface of the substrate. The layer can effectively inhibit the generation of flammable gas and prevent oxidation reaction and thermal decomposition reaction. Ammonium polyphosphate and monopentaerythritol can be combined to obtain an intumescent flame retardant. The two expand in volume when heated to form a thermal insulation layer and block heat transmission. The flame retardants used in the high-expansion fireproof coating 2 in the present invention are all halogen-free flame retardants, no toxic and harmful gas is generated during the decomposition process, and no secondary injury to trapped persons is caused.

In the present invention, the diluent used in the high-expansion fireproof coating 2 is ethyl acetate. Ethyl acetate has excellent solubility and can be used as a diluent, and when it is decomposed by heat, carbon dioxide is generated, which effectively suppresses the fire in the fire zone.

The intumescent metal fireproof blocking plate of the invention is connected with the building through the anchor bolt, which is convenient for loading and unloading, and will not cause damage to the building. Compared with the traditional installation method, no glue is required, and the installation effect is not affected by temperature.

In the present invention, the fireproof coating layer 3 is an aluminum foil glass fiber cloth, and the aluminum foil glass fiber cloth has the properties of water resistance, oil resistance, acid and alkali resistance, and protects the high expansion fireproof coating 2, prevents failure, and prolongs the use of the high expansion fireproof coating 2. life.

To sum up, in one or more embodiments of the present invention, the intumescent metal fireproof blocking board of the present invention uses galvanized steel sheet as the base material, which ensures the strength of the fireproof blocking board, improves the load-bearing capacity, and avoids building Secondary damage caused by collapse; no flying flocs are produced during the production process, reducing environmental pollution and damage to workers’ health; the blocking plate is coated with a fireproof layer based on galvanized steel, with less damage and a low defective rate, reducing the Production cost; the thickness of the plate is very thin, which saves the installation space and reduces the transportation cost.

The above description is merely an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and variations of the present invention are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims (1)

1. An expansion type metal fireproof plugging plate is characterized by comprising a base material (1), a high-expansion fireproof coating (2) and a fireproof coating layer (3) which are sequentially stacked, wherein the base material (1) is a galvanized steel plate; the high-expansion fireproof coating (2) is coated on the base material (1), and the high-expansion fireproof coating (2) consists of colloidal resin, 53.5% of flame retardant and 6.5% of diluent in percentage by mass; the flame retardant consists of low-temperature expandable graphite, magnesium hydroxide, aluminum hydroxide, zinc borate, ammonium polyphosphate and monopentaerythritol, and the diluent is ethyl acetate; the fireproof coating layer (3) is coated on the high-expansion fireproof coating layer (2);

wherein, the thickness of the expansion type metal fireproof plugging plate is between 1.7 and 2.3 millimeters; the colloidal resin is acrylate copolymerized resin; the expansion type metal fireproof plugging plate is connected with a building through an anchor bolt; the fireproof coating layer (3) is aluminum foil glass fiber cloth;

the flame retardant is adhered to the colloidal resin to form a flame-retardant micelle, the flame-retardant micelle is firmly connected through the strong adhesive force of the colloidal resin, the amount of the flame-retardant micelle is continuously increased, and a fireproof coating is formed; the low-temperature expandable graphite has low initial expansion temperature, large expansion volume after being heated, and is expanded by heating at low temperature, and the original scaly shape is changed into a worm shape to form a low-density heat insulation layer; carbon dioxide is generated when the ethyl acetate is heated and decomposed.

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