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Weather-resistant and fire-proof nanometer coating for expanding ultrathin steel structure and production thereof

A nano-coating and steel structure technology, applied in the direction of fire-resistant coatings, coatings, etc., can solve the problems of inconvenient construction and high toxicity, and achieve the effects of convenient construction, stable storage, and good fire-proof and heat-insulating performance

Inactive Publication Date: 2005-10-12
中科纳米涂料技术(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional ultra-thin fireproof coatings for steel structures are applied outdoors, and a layer of polyurethane coating must be added on it. When the polyurethane coating burns, it emits HCN gas, which is very toxic, and adding a fireproof layer on the fireproof coating will bring inconvenience to the construction.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0039] 1. Preparation of mother liquor of nanocomposite flame retardant

[0040] After the surface-modified nano-scale flame retardant is uniformly dispersed and stored stably, it can not only greatly improve the strength and fire resistance of the foam carbon layer, but also improve the mechanical properties, weather resistance and water resistance of the coating film.

[0041] For solvent-based paints, the introduction of the nanoparticle phase can be added during the resin synthesis stage, or added during the preparation of the paint. The present invention adopts the addition during the preparation of the paint. The method of dispersion can be ultrasonic, high-speed stirring, ball milling or high-speed nozzle dispersion. Regardless of the preparation method, the effect of dispersing nanoparticles by mechanical force alone is very limited, so the surface of nanoparticles must be modified to improve the interaction with monomers, coating resins or organic solvents. compatibi...

Embodiment 1

[0079] 1. Preparation of mother liquor of nanocomposite flame retardant

[0080] Add 2 parts of nano-titanium dioxide, 3 parts of nano-silicon dioxide and 3 parts of nano-magnesium hydroxide into 80 parts of acetone for ultrasonic dispersion (temperature T = 40 ° C) for 10 minutes, and then add KH570 type which accounts for 1% of the total amount of the above-mentioned nanoparticles Siloxane coupling agent, account for the Disperbyk180 macromolecule dispersant of above-mentioned nano particle total amount 1% and 962 acrylic resins (M n =40000, M w =80000), ultrasonic (T=40°C) dispersion was carried out for 1.5h.

[0081] 2. Preparation of superfine composite flame retardant slurry

[0082] First, 10 parts of pentaerythritol, 20 parts of ammonium polyphosphate (the degree of polymerization n of ammonium polyphosphate is 900), 10 parts of melamine, and chelating organic titanate NDZ-311 accounting for 6% of the total amount of flame retardant are added to 50 parts 200 parts o...

Embodiment 2

[0100] 1. Preparation of mother liquor of nanocomposite flame retardant

[0101]Add 3 parts of nano-titanium dioxide, 4 parts of nano-silica and 4 parts of nano-magnesium hydroxide into 90 parts of acetone for ultrasonic dispersion (temperature T = 50 ° C) for 20 minutes, and then add KH560 type which accounts for 5% of the total amount of the above-mentioned nanoparticles Siloxane coupling agent, Solsperse-2000 polymer dispersant accounting for 10% of the total amount of the above-mentioned nanoparticles and 10 parts of E44 epoxy resin were ultrasonically dispersed (T=50° C.) for 1 h.

[0102] 2. Preparation of superfine composite flame retardant slurry

[0103] First, 12 parts of dipentaerythritol, 24 parts of ammonium polyphosphate (the degree of polymerization n of ammonium polyphosphate is 800), 8 parts of melamine, chelating organic titanate NDZ-311 accounting for 4% of the total flame retardant, and The KH570 type siloxane coupling agent of 2% of the total amount of fu...

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Abstract

The invention relates to the process of an inflatable ultrathin steel structural weather-fire resisting nanopaint. It is composed of acrylic resin:16-25; amine resin:5-8; epoxy modified high polymer: 5-8; nano-compound fire retardant:3-6; superfine compound fire retardant: 35-45; intensify spun glass: 4-7; smoke abatementer:2-4; chlorinated paraffin:2-4; rutile titanium white:3-5; elasticizer:2-4; antifoam agent:0.3-0.6; flow promoter:0.3-0.6; mixing solvent:15-20. The above mixture is lapped to 60um of diameter and we can get the product. The product has the good resistance of the fire, water, oil and salt.

Description

technical field [0001] The invention relates to an ultra-thin steel structure fireproof coating technology, in particular to an expansion-type ultra-thin steel structure weather-resistant fireproof nano-coating and a preparation method thereof. Background technique [0002] Conventional ultra-thin fireproof coatings for steel structures contain pentaerythritol, phosphates, amino resins and other water-soluble and easily degradable components. Flame retardants will react with components in the air due to salting out, and undergo deliquescence or chemical changes. When used outdoors, the general validity period is about 2 years, that is, the paint will fail, and the paint will fall off and crack. Once a fire breaks out, the steel structure building collapses within ten minutes, and the consequences are very serious. Conventional ultra-thin fireproof coatings for steel structures are applied outdoors and must be covered with a layer of polyurethane coating. When the polyureth...

Claims

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Application Information

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IPC IPC(8): C09D5/18C09D133/02
Inventor 王震宇韩恩厚柯伟
Owner 中科纳米涂料技术(苏州)有限公司
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