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Fireproof powder paint for super-thin steel structure and preparation method thereof

A powder coating and steel structure technology, applied in powder coatings, fire-retardant coatings, epoxy resin coatings, etc., can solve the problem that film-forming substances do not have flame retardant effect, seep, migrate, volatilize, and fail to achieve fire resistance and flame retardant. problems, to achieve the effect of overcoming aging decay, good film-forming performance and strong adhesion

Inactive Publication Date: 2007-10-24
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The existing intumescent fire retardant coatings, whether they are water-based, solvent-based or powder-based, all use additive flame retardant systems. Leakage, migration, volatilization, etc. will occur after the fire, and it will not achieve the due effect of fire prevention and flame retardancy in the event of a fire, and there will be aging attenuation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0043] The preparation method of the present invention prepares materials according to the above-mentioned formula, and its steps are:

[0044] (1) Add sodium hydroxide and water to the dissolving kettle, stir and dissolve completely, add tetrabromobisphenol A and stir and heat to 75°C to dissolve tetrabromobisphenol A completely, filter while hot, and add the filtrate to the reactor to cool When it reaches 45~50℃, add epichlorohydrin, slowly increase the temperature to 80℃, react at 80~85℃ for 1 hour, increase the temperature to 90~95 to react to the softening point, add water to cool down and stir, and separate the waste water layer. Wash with hot water for 2 to 4 times. After it is neutral and free of salt, wash with distilled water. Dehydrate first under normal pressure. When the liquid temperature rises above 115°C, reduce pressure to 20.26kPa and gradually increase the temperature to 125~140℃, after the dehydration is completed, the material is discharged and cooled to obtai...

Embodiment 1

[0049](1) Weigh 5.9 kg of sodium hydroxide and 15.0 kg of water into the dissolving kettle. After stirring to dissolve completely, add 66.0 kg of tetrabromobisphenol A, stir and raise the temperature to 75°C to dissolve tetrabromobisphenol A completely, while it is hot Filter, add the filtrate to the reaction kettle and cool to 50°C, add 13.1kg of epichlorohydrin, slowly raise the temperature to 80°C, react at 80-85°C for 1 hour, raise the temperature to 90-95 and react until the softening point is 85-95 ℃, add water to cool down and stir, let stand for 30 minutes to release the waste water layer, and then wash with hot water for 2 to 4 times, until neutral and salt-free, wash with distilled water and first dehydration at normal pressure, when the liquid temperature rises to 115 ℃, The pressure is reduced to 20.26kPa, and the temperature is gradually increased to 125-140°C. After the dehydration is completed, the material is discharged and cooled to obtain a light yellow solid tet...

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Abstract

The invention discloses a method preparing for an ultra-thin inflatable steel structure fire-proof powder paint; which comprises the following parts: 45%-60% tetrabromo-bisphenol A epoxide resin, 2. 2%-3% dicyandiamide, 15%-21% ammonium polyphosphate, 10%-14% melamine, 5%-7% dipentaerythritol, 0. 5%-2% levelling agent, 0. 3%-0. 5% benzoin, 5%-10% titanium dioxide. The invention comprises the following steps: adding natrium hydroxydatum and water to the autoclave; adding tetrabromo-bisphenol A; mixing and heating at 75 Deg. C; adding colature to the autoclave; cooling to 45-55 Deg. C; adding epichlorohydrin; reacting at 80-85 Deg. C; heating to 90-95 at softening point; adding water; cooling; mixing; washing with the hot water; dewatering at the atmosphere pressure; heating to 125-140 Deg. C; getting the stramineous solid tetrabromo-bisphenol A epoxide resin; Mixing tetrabromo-bisphenol A epoxide resin, dicyandiamide and levelling agent at the high speed; mixing benzoin, titanium dioxide, ammonium polyphosphate, melamine, dipentaerythritol; melting and squeezing the materials after mixing; pelleting the melted materials; disintegrating and grading after cooling and bruising; getting the fire-proof powder paint.

Description

Technical field [0001] The invention relates to a coating composition, in particular to a fireproof coating. Background technique [0002] Fire-resistant coatings can be divided into water-based, solvent-based and powder-based types according to their forms. They are divided into intumescent and non-intumescent types according to the fire protection mechanism. According to the thickness of the coating, they can be divided into thick coating (8-50mm) and thin coating (3-7mm). ) And ultra-thin type (no more than 3mm). [0003] The fire resistance limit of the thick coating type is 0.5-3 hours. It is mainly composed of the non-flammable cementitious material cement base, inorganic heat insulation material and flame retardant. It can effectively reduce the flame propagation rate in the initial stage of combustion, but the fire intensity It will lose its effect when it is strong, and it is often used in occasions with low fire protection requirements and poor decoration. [0004] Thin...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D5/03C09D5/18
Inventor 杨保平崔锦峰周应萍王青宁郭军红
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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