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Steel structure active fire retardant coating and preparation method thereo

A technology for fire-resistant coatings and steel structures, applied in fire-resistant coatings, anti-fouling/underwater coatings, coatings, etc., can solve problems such as loss of bearing capacity, inability to continue to use, poor fire resistance of steel structures, etc., and achieve thin coating thickness , Improve the activity, the effect of superior fire resistance limit performance

Inactive Publication Date: 2013-02-06
湖北联飞翔汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The steel structure has the advantages of light weight, high strength, and convenient construction, and is being widely used in large buildings. However, the fire resistance of the steel structure is very poor, and it is easy to conduct heat. Usually, it will lose its bearing capacity at a temperature of 450-650 ° C. , a large deformation occurs, resulting in the bending of steel columns and steel structural beams, etc. and cannot continue to be used

Method used

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  • Steel structure active fire retardant coating and preparation method thereo
  • Steel structure active fire retardant coating and preparation method thereo
  • Steel structure active fire retardant coating and preparation method thereo

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Put 40 grams of ferrite tourmaline powder, 30 grams of ferrite powder, 8 grams of quartz porphyry powder, 20 grams of Suzhou soil powder, and 2 grams of silicate inorganic antibacterial material powder containing 0.5% silver. Mill in a ball mill for 4 hours, mix evenly, so that the particle size of the powder reaches 325 mesh; spray 0.8 g of water evenly on the above powder, press the powder with a press to form a ceramic blank with a diameter of 50 mm and a thickness of 6 m body; the green body was sintered at 930°C for 4 hours to obtain a ceramic sintered body; the ceramic sintered body was crushed, pulverized, and ground to produce a ceramic powder material with a median diameter (D50) of 3.4 microns.

Embodiment 2

[0031] 35 grams of iron lithium tourmaline powder, 42 grams of strontium ferrite powder, 5 grams of marble porphyry powder, 15 grams of Suzhou soil powder, 3 grams of borate inorganic antibacterial material powder containing 1.0% silver, Put it in a ball mill and mill it for 6 hours, mix evenly, so that the particle size of the powder reaches 325 mesh; spray 1.2 grams of water evenly on the above powder, press the powder with a press, and make a ceramic with a diameter of 50mm and a thickness of 6m The green body is sintered at 1150°C for 1.5 hours to obtain a ceramic sintered body; the ceramic sintered body is crushed, pulverized, and ground to produce a ceramic powder material with a median diameter (D50) of 1.2 microns .

Embodiment 3

[0033] 22 grams of quartz powder, 45 grams of NdFeB powder, 3 grams of cerium ytterbium phosphate powder, 27 grams of Suzhou soil powder, 3 grams of phosphate inorganic antibacterial material powder containing 0.5% silver and 0.5% cerium , put it in a ball mill and mill it for 4 hours, mix evenly, so that the particle size of the powder reaches 325 mesh; spray 0.8 g of clear water evenly in the above powder, and press the powder with a press to make a powder with a diameter of 50 mm and a thickness of 6 m. Ceramic sheet green body; sinter the green body at 1050°C for 2.5 hours to obtain a ceramic sintered body; crush, pulverize and grind the ceramic sintered body to make a ceramic powder with a median diameter (D50) of 1.93 microns Material.

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Abstract

The invention discloses a steel structure active fire retardant coating which comprises the following components in percentage by weight: 1-10% of ceramic powder material, 30-48% of acrylic resin, 15-23% of ammonium polyphosphate, 9-15% of pentaerythritol, 7-11% of melamine, 1-5% of titanium dioxide and 12-22% of solvent gasoline No.200. A preparation method provided by the invention is simple, and the fire retardant coating is prepared by adding a certain amount of ceramic powder material with bioactivity function based on the existing fire retardant coating. Because the ceramic powder material has activation function, the activity of the coating is improved, so that the fire retardant coating has better fire endurance performance than the existing fire retardant coating, and the required coating thickness is also thinner.

Description

technical field [0001] The invention relates to the technical field of coatings, and more specifically relates to an ultra-thin intumescent steel structure active fireproof coating and a preparation method thereof. Background technique [0002] The steel structure has the advantages of light weight, high strength, and convenient construction, and is being widely used in large buildings. However, the fire resistance of the steel structure is very poor, and it is easy to conduct heat. Usually, it will lose its bearing capacity at a temperature of 450-650 ° C. , a large deformation occurs, resulting in the bending of steel columns and steel structural beams, etc. and cannot continue to be used. Therefore, it must be treated with fire prevention. The common measures are to use heat insulation and refractory materials to block, such as outer cladding, water jacket, fireproof coating, etc., and coating fireproof coating on the steel surface is the simplest and most effective way a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D5/18C09D5/14C09D7/12
Inventor 陈海平李建林沈瑞洲余义
Owner 湖北联飞翔汽车科技有限公司
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