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

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 that the 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...

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.