Outdoor thick steel structure fire-retardant coating

A fire retardant coating and steel structure technology, applied in the field of building materials, can solve the problems of low thermal conductivity of the coating, lower system temperature, poor thermal insulation effect, etc. Effect

Inactive Publication Date: 2015-04-22
LUOYANG DAYU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The fireproof and heat insulation principle of thick steel structure fireproof coatings coated on steel components is that the coating basically does not change in volume when the fireproof coating is exposed to fire, but the thermal conductivity of the coating is very low, which delays the heat transfer to the protected substrate The speed of fire retardant coating itself is non-combustible, which acts as a barrier to steel components and prevents heat radiation, avoiding flames and high temperatures from directly attacking steel components; and some components in the coating react with each other in case of fire to generate non-combustible gas The process is an endothermic reaction, which also consumes a lot of heat, which is beneficial to reduce the temperature of the system, so the fire prevention effect is remarkable, and it can effectively protect the steel from fire and heat insulation; The volume change forms a glaze-like protective layer, which can isolate oxygen and prevent oxygen from being in contact with the protected flammable substrate, thereby avoiding or reducing the combustion reaction. However, the thermal conductivity of the glaze-like protective layer formed by this type of coating is often higher , the heat insulation effect is poor, in order to obtain a certain fire and heat insulation effect, the thick coating type fire retardant coating generally has a thicker coating to meet a certain fire and heat insulation performance requirements

Method used

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  • Outdoor thick steel structure fire-retardant coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] An outdoor thick steel structure fireproof coating, according to the weight ratio, consists of 10% natural sepiolite wool, 5% light calcium carbonate, 30% closed-cell perlite, 1% high-strength water-resistant rubber powder, 2% hydrophobic Water agent, 44% Portland cement and 8% refractory cement are mixed.

[0035] The above is the basic fact mode of the present embodiment, which can be further optimized on the basis of the above:

[0036] The natural sepiolite velvet preferably selects natural sepiolite velvet with an outer surface area of ​​300-1000 square meters and an inner surface area of ​​500 square meters per gram;

[0037] The high-strength water-resistant rubber powder is preferably selected from KC-509 series high-strength water-resistant rubber powder;

[0038] The water-repellent agent is preferably ESASIL 300 P water-repellent agent;

[0039] The refractory cement is preferably CA-50 refractory cement, and the content ratio of monocalcium dialuminate and...

Embodiment 2

[0041] An outdoor thick steel structure fireproof coating, according to the weight ratio, consists of 20% natural sepiolite wool, 5% light calcium carbonate, 20% closed-cell perlite, 1.4% high-strength water-resistant rubber powder, 1.6% hydrophobic Water agent, 40% Portland cement and 12% refractory cement are mixed.

[0042] The above is the basic fact mode of the present embodiment, which can be further optimized on the basis of the above:

[0043] The natural sepiolite velvet preferably selects natural sepiolite velvet with an outer surface area of ​​300-1000 square meters and an inner surface area of ​​500 square meters per gram;

[0044] The high-strength water-resistant rubber powder is preferably selected from KC-509 series high-strength water-resistant rubber powder;

[0045] The water-repellent agent is preferably ESASIL 300 P water-repellent agent;

[0046] The refractory cement is preferably CA-50 refractory cement, and the content ratio of monocalcium dialuminat...

Embodiment 3

[0048] An outdoor thick steel structure fireproof coating, according to the weight ratio, consists of 15% natural sepiolite wool, 5% light calcium carbonate, 25% closed-cell perlite, 1.2% high-strength water-resistant rubber powder, 1.8% hydrophobic Water agent, 42% Portland cement and 10% refractory cement are mixed.

[0049] The above is the basic fact mode of the present embodiment, which can be further optimized on the basis of the above:

[0050] The natural sepiolite velvet preferably selects natural sepiolite velvet with an outer surface area of ​​300-1000 square meters and an inner surface area of ​​500 square meters per gram;

[0051] The high-strength water-resistant rubber powder is preferably selected from KC-509 series high-strength water-resistant rubber powder;

[0052] The water-repellent agent is preferably ESASIL 300 P water-repellent agent;

[0053] The refractory cement is preferably CA-50 refractory cement, and the content ratio of monocalcium dialuminat...

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Abstract

The invention relates to an outdoor thick steel structure fire-retardant coating and belongs to the field of building materials. The fire-retardant coating is prepared by mixing the following raw materials in percentage by weight: 10-20% of natural sepiolite fabric, 4-6% of light calcium carbonate, 20-30% of hole-closed perlite, 1-1.4% of high-strength water-resistant rubber powder, 1.6-2% of a hydrophobic agent, 40-44% of Portland cement and 8.0-12% of refractory cement. Since the fire-retardant coating is prepared by mixing natural sepiolite fabric, hole-closed perlite, light calcium carbonate and high-strength water-resistant rubber powder, polymer long chains in high-strength water-resistant rubber powder form continuous network structures which are interspersed one another, the bonding strength of the final product is significantly improved, and meanwhile, the water resistance, crack resistance, weather resistance and impact resistance of the cement-based products can also be improved and the fire-retardant coating has good chemical resistance and water resistance and hardly falls off.

Description

technical field [0001] The invention relates to the field of building materials, in particular to an outdoor thick steel structure fireproof coating. Background technique [0002] Fireproof coating is a special coating used on the surface of flammable substrates, which can reduce the flammability of the surface of the coated material, retard the rapid spread of fire, and improve the fire resistance limit of the coated material. The fire retardant coating is coated on the surface of the substrate. In addition to its flame retardant effect, it also has anti-rust, waterproof, anti-corrosion, wear-resistant, heat-resistant, coating toughness, colorability, adhesion, easy-drying and a certain gloss, etc. performance. [0003] The fireproof and heat insulation principle of thick steel structure fireproof coatings coated on steel components is that the coating basically does not change in volume when the fireproof coating is exposed to fire, but the thermal conductivity of the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06
Inventor 赵青山
Owner LUOYANG DAYU IND
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