Preparation process for fireproof coating of outdoor steel structure

Abstract

The invention discloses a preparation process for a fireproof coating of an outdoor steel structure. The preparation process comprises the following steps: adding 26 parts of water, 0.2 part of silicone oil, 9 parts of pentaerythritol, 24 parts of calcium carbonate, 4 parts of ethylene glycol, 6 parts of titanium dioxide, 18 parts of melamine and 16 parts of ammonium polyphosphate into a dispersing tank; stirring the materials for 20 minutes; grinding, and screening the ground materials with a 120-mesh sieve; adding 60 parts of acrylic emulsion, 33 parts of organic silicon modified styrene-acrylic emulsion, 0.5 part of a mold inhibitor, 15 parts of melamine phosphate, 2 parts of chlorinated paraffin, 0.3 part of a flatting agent and 0.4 part of a preservative, intensively mixing the materials, and then discharging the mixture, so as to obtain the fireproof coating of the high-weather-resistance outdoor ultrathin steel structure. According to the preparation process disclosed by the invention, the selected and used acrylic emulsion is high in adhesive force, slow in expansion rate, long in time of duration, high in expansion multiplying power, much in carbide, uniform in cells, compact in expansion layer and high in rigidity, so that the acrylic emulsion is good in fireproof effect, and suitable for being used as the fireproof coating film forming matter of the ultrathin steel structure.

Description

technical field [0001] The invention belongs to the technical field of paint preparation, in particular to a preparation method of an outdoor steel structure fireproof paint preparation process. Background technique [0002] Ultra-thin fireproof coatings for steel structures refer to fireproof coatings for steel structures with a thickness of no more than 3mm. This kind of fireproof coating expands and foams when exposed to fire to form a dense fireproof and heat insulation layer. It is a core variety developed in recent years. This kind of coating is especially suitable for the fire protection and decoration requirements of light steel roof trusses and ball joint steel grids of buildings such as airports, convention centers, cultural and sports venues, etc. Due to the ultra-thin coating of this type of fire retardant coating, the amount of fire retardant coating used in the project is greatly reduced compared with thicker and thinner steel structures, thereby reducing the t...

AI Technical Summary

Problems solved by technology

[0003] At present, the fireproof coatings for steel structures have the problems of poor storage stability, poor physical and chemical properties of coatings, and poor decoration. Moreover, the adhesion between coatings and steel structures is not strong when exposed to fire.