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Thick-type steel structure fireproof coating and preparation method thereof

A fire-resistant coating and steel structure technology, applied in fire prevention, building components, etc., can solve the problems of increasing steel structure load, low thermal conductivity of coating, heat consumption, etc., to improve heat insulation capacity, reduce thermal conductivity, and improve fire resistance sexual effect

Active Publication Date: 2017-05-24
山东三木建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing fire retardant coatings have low heat insulation ability in the initial stage of foaming, and the fire resistance time limit and temperature resistance after foaming are not ideal.
[0005] Thick fireproof coating basically does not change in volume when it is exposed to fire. The low thermal conductivity of the coating delays the speed of heat transfer to the protected substrate. The coating itself of the fireproof coating is non-combustible and shields heat radiation. It avoids the direct attack of flame and high temperature. In addition, the process of some components in the coating reacting with each other to generate non-combustible gas is an endothermic reaction, which also consumes a lot of heat, which is beneficial to reduce the temperature of the system, but this type of coating The thermal conductivity is often large, and the heat insulation effect is poor. In order to obtain a certain fire and heat insulation effect, it often needs to reach a certain thickness to meet a certain fire and heat insulation performance requirements.
And it increases the load of the steel structure, and makes the construction very difficult, especially when facing the complex outline of the steel structure

Method used

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  • Thick-type steel structure fireproof coating and preparation method thereof
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Examples

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Effect test

Embodiment 1

[0058] S0: A thick steel structure fireproof coating is composed of the following composition by weight percentage: Portland cement 30%, fly ash 8%, refractory clay 11%, calcium carbonate 20%, hydrophobic silicon dioxide gas condensation Glue 5%, expanded perlite 23%, air-entraining agent sodium lauryl sulfate 0.03%, water-retaining agent hydroxypropyl methylcellulose 0.4%, flame retardant aluminum hydroxide 1%, German BYK-410 contact Variable agent 0.07%, aluminum silicate fiber 1.5%.

[0059] The particle in the hydrophobic silica airgel is a spherical particle whose surface is replaced by a silyl hydrophobic group to a hydroxyl group, with a diameter of 1-100nm, and the density of the hydrophobic silica airgel is 40kg / m³, Expanded perlite is a lightweight filler with open pores and internal pores, with a bulk density of 55 kg / m³ and a particle size of less than 5mm; the fibers are aluminum silicate fibers with a diameter of less than 5mm and a length of less than 15mm.

[...

Embodiment 2

[0067] S0: A thick steel structure fireproof coating is composed of the following composition by weight percentage: Portland cement 30%, fly ash 8%, refractory clay 11%, calcium carbonate 15%, hydrophobic silicon dioxide gas condensation Glue 10%, expanded perlite 23%, air-entraining agent sodium lauryl sulfate 0.03%, water-retaining agent hydroxypropyl methylcellulose 0.4%, flame retardant aluminum hydroxide 1%, German BYK-410 contact Variable agent 0.07%, aluminum silicate fiber 1.5%.

[0068] The particle in the hydrophobic silica airgel is a spherical particle whose surface is replaced by a silyl hydrophobic group to a hydroxyl group, with a diameter of 1-100nm, and the density of the hydrophobic silica airgel is 40kg / m³, Expanded perlite is a lightweight filler with open pores and internal pores, with a bulk density of 55 kg / m³ and a particle size of less than 5mm; the fibers are aluminum silicate fibers with a diameter of less than 5mm and a length of less than 15mm.

...

Embodiment 3

[0076] S0: A thick steel structure fireproof coating is composed of the following composition by weight percentage: Portland cement 30%, fly ash 8%, refractory clay 11%, calcium carbonate 10%, hydrophobic silicon dioxide gas condensation Glue 15%, expanded perlite 23%, air-entraining agent sodium lauryl sulfate 0.03%, water-retaining agent hydroxypropyl methylcellulose 0.4%, flame retardant aluminum hydroxide 1%, German BYK-410 contact Variable agent 0.07%, aluminum silicate fiber 1.5%.

[0077] The particle in the hydrophobic silica airgel is a spherical particle whose surface is replaced by a silyl hydrophobic group to a hydroxyl group, with a diameter of 1-100nm, and the density of the hydrophobic silica airgel is 40kg / m³, Expanded perlite is a lightweight filler with open pores and internal pores, with a bulk density of 55 kg / m³ and a particle size of less than 5mm; the fibers are aluminum silicate fibers with a diameter of less than 5mm and a length of less than 15mm.

...

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Abstract

The invention relates to a steel structure fireproof coating, and particularly relates to a thick-type steel structure fireproof coating and a preparation method thereof. The thick-type steel structure fireproof coating is prepared from the following raw materials by mass percent: 1 to 50 percent of cement binding materials, 1 to 20 percent of coal ash, 1 to 30 percent of fire-resistant clay, 1 to 30 percent of calcium carbonate, 1 to 20 percent of hydrophobic silicon dioxide aerosol, 1 to 20 percent of expanded perlite, 0.01 to 2 percent of air entraining agent, 0.01 to 2 percent of water retaining agent, 0.01 to 5 percent of flame retardant agent, 0.01 to 2 percent of thixotropic agent and 0.1 to 5 percent of fibers. The coating can solve the disadvantages of the existing steel structure fireproof technology, and can greatly improve the heat insulation and fireproof capacity of the steel structure fireproof coating.

Description

technical field [0001] The invention relates to a steel structure fireproof coating, in particular to a thick steel structure fireproof coating and a preparation method thereof. Background technique [0002] As a form of high-rise building structure, steel structure is widely used in the construction industry because of its high strength, light weight, good extensibility, earthquake resistance and short construction period, especially in super high-rise and large-span Construction and other aspects have shown strong vitality. [0003] According to relevant domestic and foreign reports and the tests and statistics of relevant institutions, the fire resistance of steel structure buildings is worse than that of masonry structures and reinforced concrete structures. The most fatal weakness of steel structures is that the fire resistance of steel is very poor. The internal crystals of steel The structure is very sensitive to temperature. The mechanical strength of steel decrease...

Claims

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Application Information

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IPC IPC(8): C04B28/04E04B1/94C04B111/23C04B111/20C04B111/28
CPCC04B28/04C04B2111/00525C04B2111/00551C04B2111/20C04B2111/23C04B2111/28C04B2201/20C04B2201/50E04B1/94C04B18/08C04B14/10C04B14/28C04B14/064C04B14/185C04B24/16C04B24/383C04B22/06C04B2103/0085C04B14/4656
Inventor 王建新陶书杰郭娜娜
Owner 山东三木建材科技有限公司
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