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Aqueous bromine-carbon epoxy resin steelwork fire-proof paint and preparation thereof

A technology of bromocarbon epoxy resin and fireproof coating, which is applied in the direction of epoxy resin coating, fireproof coating, coating, etc., can solve the problems of short fire resistance limit, limited application, small molecular weight, etc., and achieve long-lasting fireproof and flame retardant , Overcoming aging attenuation, good film-forming performance

Inactive Publication Date: 2010-12-22
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Existing intumescent fire retardant coatings all adopt additive flame retardant system, and the film-forming material does not have flame retardant effect, while the additive flame retardant system has a small relative molecular weight, after forming a coating, the flame retardant system will seep, migrate, Phenomena such as volatilization, in the event of a real fire, it will not have the due effect of fire prevention and flame retardancy, and there will be aging attenuation
At the same time, the film-forming substance used in this type of fire-resistant coating is not well matched with the fire-proof additive, the expansion rate is low, and the fire-resistant limit is short, which limits the application.

Method used

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Examples

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preparation example Construction

[0098] The preparation method of water-based bromocarbon epoxy resin steel structure fireproof coating of the present invention prepares materials according to the above-mentioned formula, and its steps are:

[0099] (1) Add sodium hydroxide and water into a beaker, stir and dissolve to obtain an aqueous sodium hydroxide solution; add tetrabromobisphenol A into a three-necked flask, then add epichlorohydrin, stir, and heat up to 70-75°C to make Tetrabromobisphenol A is completely dissolved, cooled to 50-55°C, and starts to add aqueous sodium hydroxide solution dropwise, the amount added is 2 / 3 of the total amount of aqueous sodium hydroxide solution, and the temperature rises to 55°C within 3-4 hours. React at ~60°C for 4 hours, raise the temperature to 65~70°C, add dropwise the remaining sodium hydroxide aqueous solution, drop it within 1 hour, react at 68~73°C for 3~4 hours, add benzene and water to cool down, and carry out static layering , let go of the water layer, wash w...

Embodiment 1

[0108] (1) Add 47.2g of sodium hydroxide and 110.4g of water into a beaker, stir and dissolve to obtain an aqueous solution of sodium hydroxide; 317.6g of tetrabromobisphenol A is added in a three-necked flask, and 324.8g of epichlorohydrin is added in the bottle to carry out Stir, heat up to 70-75°C to completely dissolve tetrabromobisphenol A, cool to 50-55°C, start adding 178g of sodium hydroxide aqueous solution dropwise, finish dropping within 3-4 hours, and heat up to 55-60°C React for 4 hours, raise the temperature to 65-70°C, add dropwise the remaining sodium hydroxide aqueous solution, drop it off within 1 hour, react at 68-73°C for 3-4 hours, add benzene and water to cool down, carry out static layering, and let go The water layer is washed with water to neutrality, and dehydrated under normal pressure first. When the liquid temperature rises above 110°C, the pressure is reduced to 20kPa, and the temperature is gradually raised to 125-140°C. When no liquid is distille...

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Abstract

The invention provides an aqueous bromine carbon epoxy resin fire-resistant coating for steel structure and preparation method thereof, comprising first component and second component, wherein the first component uses aquos bromine carbon epoxy resin latex as film forming material, uses ammonium polyphosphate, melamine and di-pentaerythritol as flameretardant system, and uses water as disperse medium system; and the second component is produced by modifying polyethylene polyamine by tetrabromobisphenol A epoxy resin. The polymerization of flameretardant element Br can conquer the problem thatthe ageing effect of the present fire resistant coating attenuates. The fire-resistant coating is aquos coating and the VOC is reduced. The composite cosolvent is glycol ethers or propylene glycol ethers, therefore the environment is friendly. The fire-resistant coating uses charateristic mode flameretardant polymer resin as base material to reduce flameretardant additive system, thus the fire-resistant coating has strong adhesion, good film-forming properties, excellent expansion and high hardness of carbon layer.

Description

technical field [0001] The invention relates to a coating composition, in particular to a water-based bromocarbon epoxy resin steel structure fireproof coating. Background technique [0002] According to the form, fire-resistant coatings can be divided into water-based, solvent-based and powder-based; according to the fire-proof mechanism, they can be divided into intumescent and non-expandable; ) and ultra-thin (less than 3mm). [0003] Water-based ultra-thin fireproof coatings have the advantages of safety, non-toxicity, energy saving and environmental friendliness. They are often intumescent, mainly composed of water-based base materials (including ordinary styrene-acrylic emulsion, pure acrylic emulsion, chlorine partial emulsion and silicon-acrylic emulsion), fireproof Flame retardant system (ammonium polyphosphate, melamine and pentaerythritol) and pigments and fillers. The fire-resistant coating expands and foams when exposed to fire, forming a dense fire-proof carb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/18C09D7/12B05D7/14
Inventor 杨保平崔锦峰周应萍郭军红韩培亮姚向民刘诗鑫崔定伟
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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