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Steel structure water-based fireproof coating and preparation method thereof

A technology for fire retardant coatings and steel structures, applied in the direction of fire retardant coatings, coatings, etc., can solve the problems of building stability damage, loss of load-bearing capacity of steel, deformation or collapse, etc., to achieve excellent fire performance, not easy to fall off, excellent fire performance Effect

Pending Publication Date: 2020-01-17
LUYANG ENERGY SAVING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to data, when a structural steel project reaches 538°C within 5 minutes of being exposed to fire, the steel begins to lose its load-bearing capacity, and the exposed steel structure may be deformed or collapsed in a high-temperature fire sink with a fire resistance limit of less than 0.25h. The stability of the building is compromised with catastrophic consequences
However, the fire retardant coatings are all pure organic components, using an organic binder, which is easy to fall off after the fire protection fails, and the safety is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0061] The present invention provides a method for preparing a steel structure water-based fireproof coating described in the above technical solution, comprising:

[0062] It is obtained by mixing inorganic powder, inorganic fiber, inorganic binder, organic binder, organic expansion agent, wetting agent, dispersant, moisturizing agent, tackifier and defoamer, and stirring.

[0063] In the present invention, the above is preferably carried out in the batching tank. The present invention does not limit the stirring, and the stirring and mixing well known to those skilled in the art can be sufficient.

[0064] According to the present invention, the mass ratio of the inorganic powder, inorganic fiber, inorganic binder, organic binder, organic expansion agent, wetting agent, dispersant, humectant, antifreeze, and defoamer is (500-800 ):(4~10):(300~500):(20~50):(90~110):(1~2):(2~3):(8~13):(4~6): (1~2); preferably (500~750): (5~9): (320~480): (25~45): (92~108): (1~2): (2~3): (9~1...

Embodiment 1

[0072] Sequentially put 4kg of ceramic fiber standard spinning cotton with a diameter of 3-4μm, 100kg of 325 mesh expanded perlite, 400kg of 325 mesh ultrafine alumina powder, 300kg of polymerized silica gel, 20kg of acrylic emulsion, 70kg of melamine phosphate, and 20kg of dipentaerythritol. , X4051kg, PAE2kg, vaseline 8kg, rosin 4kg, and polydimethylsiloxane 1kg were added to the batching pool, stirred and mixed to obtain a steel structure water-based fireproof coating. The fire-resistant coating in the above examples is made into a coating sample with a thickness of 2mm ± 0.20mm, and the fire-resistant performance test is performed according to GB / T9978, and the fire-resistant duration is 1.15h; according to GB / T14907-2002, the bond strength is detected, and its The bonding strength is 0.5Mpa.

Embodiment 2

[0074]Sequentially put 7kg of ceramic fiber standard spinning cotton with a diameter of 3-4μm, 195kg of 325 mesh expanded perlite, 455kg of 325 mesh ultrafine alumina powder, 400kg of polymerized silica gel, 35kg of acrylic emulsion, 78kg of melamine phosphate, and 22kg of dipentaerythritol. , X405 1.5kg, PAE 2.5kg, vaseline 10.5kg, rosin 5kg, and polydimethylsiloxane 1.5kg were added to the batching tank, stirred and mixed to obtain a steel structure water-based fireproof coating. The fire-resistant coating in the above examples is made into a coating sample with a thickness of 2mm ± 0.20mm, and the fire-resistant performance test is performed according to GB / T9978, and the fire-resistant duration is 1.35h; according to GB / T14907-2002, the bond strength is detected, and its Bond strength is 0.6 5Mpa.

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Abstract

The invention provides a steel structure water-based fireproof coating. The water-based fireproof coating comprises the following components in parts by weight: 500-800 parts of inorganic powder; 4-10parts by weight of inorganic fiber; 300-500 parts by weight of an inorganic binder; 20-50 parts by weight of an organic binder; 90-110 parts by weight of an organic expanding agent; 1-2 parts by weight of a wetting agent; 2-3 parts by weight of a dispersant; 8-13 parts by weight of a humectant; 4-6 parts by weight of a tackifier and 1-2 parts by weight of a defoaming agent; wherein the inorganicpowder comprises expanded perlite and ultrafine alumina powder; wherein the organic expanding agent is prepared from melamine phosphate and dipentaerythritol. The inorganic-organic composite steel structure fireproof coating is high in strength and good in surface appearance. Due to the fact that the inorganic binding agent capable of being used for binding metal materials is used, the binding strength is high, and falling is not prone to happening under instantaneous high temperature. The fireproof performance of the inorganic material is added with the high-temperature expansion characteristic of the organic expansion material, so that the fireproof performance of the coating is excellent.

Description

technical field [0001] The invention relates to the technical field of fireproof material preparation, in particular to a water-based fireproof coating for steel structures and a preparation method thereof. Background technique [0002] Steel structures are used in a wide variety of applications, but there are three major threats to their use: instability, fire and corrosion. Instability can be solved at design time, and passive technology is required for protection against fire and corrosion. According to data, when a structural steel project reaches 538°C within 5 minutes of being exposed to fire, the steel begins to lose its load-bearing capacity, and the exposed steel structure may be deformed or collapsed in a high-temperature fire sink with a fire resistance limit of less than 0.25h. The stability of the building is compromised, with catastrophic consequences. The method of using fire retardant coatings for flame retardancy is considered to be one of the effective me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/18C09D7/61C09D7/63C09D7/65
CPCC09D1/00C09D5/185C09D7/61C09D7/63C09D7/65C09D7/70
Inventor 傅超岳耀辉王成龙鹿明邱华
Owner LUYANG ENERGY SAVING MATERIALS CO LTD
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