Steel structure fireproof coiled material with function layer and preparing method thereof

Abstract

The invention relates to a steel structure fireproof coiled material with a function layer and a preparing method of the steel structure fireproof coiled material, and belongs to the field of fireproof materials. The fireproof coiled material consists of a fireproof layer and a function layer, wherein the fireproof layer consists of high molecular solid resin, expansion type fire retardants, dispersion auxiliary agents and enhancing auxiliary agents, the function layer is manufactured by additionally adding functional filling materials on the basis of the materials of the fireproof layer, and the two layers are respectively subjected to mixing, extrusion pelleting, casting tabletting, re-compounding casting and coiling into coiled materials. The steel structure fireproof coiled material can be continuously produced on a production line, the materials are processed into the coiled materials with the required thickness in one step, the production efficiency is high, the equipment is simple, the production process is safe and environment-friendly, industrial pollution such as waste water and waste gas do not exist, the fireproof coiled material can be used for producing sheet materials with different thickness according fireproof design requirements, and fireproof design requirements under different conditions can be met. The coiled material can be fast pasted on the surface of a steel structure in the use process, the fireproof design thickness can be realized through one-step pasting, the multi-time repeated brushing and coating is not needed, the work efficiency is high, the work procedures are simple, and the construction is environment-friendly and convenient.

Description

technical field [0001] The invention belongs to the technical field of fireproof materials, and in particular relates to a steel structure fireproof coil and a preparation method thereof. Background technique [0002] With the rapid development of my country's economic construction, steel structure buildings have become increasingly It is widely used in various large-space industrial plants and civil buildings. Although the steel structure itself is a non-combustible material, its yield stress and tensile strength decrease sharply to 50% to 60% of the original value when it is above 600°C, so its fire resistance limit is only 15 minutes, which cannot meet the design fire resistance limit requirements. In order to overcome the deficiencies in fire protection of steel structure materials in practical applications, fire protection treatment must be carried out, the purpose of which is to increase the fire resistance of steel structures to at least the limit range specified in t...

AI Technical Summary

Problems solved by technology

Solvent-based coatings have good hardness, gloss, water resistance, and chemical corrosion resistance, but they use organic solvents as dispersants, which will volatilize in large quantities during production and construction, pollute the environment, cause harm to the human body, and waste energy. The safety hazard is great; the paint film has poor air permeability and hydrophobicity. If it is applied on a wet base, it is prone to peeling and peeling off; as time goes on, the coating becomes harder and more fragile, such as Cracks occur when the wall expands with heat and contracts with cold

Water-based coatings use water as a solvent, which is environmentally friendly, safe, and convenient to use. The coating has relatively good air permeability, and the water vapor inside the base layer can diffuse outward, but there are also disadvantages such as poor water resistance and poor hardness of the coating.

The most important thing is that both water-based and solvent-based fireproof coatings for steel structures have long construction periods, repeated painting, complicated procedures, inconvenient on-site construction, waste liquid, waste gas and other pollution during production, and difficult brushing thickness. Mastering, resulting in uneven coating thickness, poor decoration, serious construction loss and other shortcomings

[0004] If you want to add a functional layer to the fireproof coating layer, such as UV protection, etc., it can increase the life of the fireproof coating layer and improve the effect of the fireproof coating layer, which cannot be realized at all with the current fireproof coating layer or construction technology.

[0005] Fireproof coiled materials in the existing market are not suitable for wrapping steel structures, and cannot meet the needs of steel structure fireproof performance

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