Fire-proof and corrosion-proof dual-function paint for water-based ultrathin expansion steel structure and preparation method thereof

Abstract

The invention relates to fire-proof and corrosion-proof dual-function paint for a water-based ultrathin expansion steel structure and a preparation method thereof. Water-based epoxy emulsion and self-crosslinking silicone-acrylic emulsion are taken as film forming substances, high-polymerization ammonium polyphosphate, melamine and pentaerythritol are taken as fire-proof aid systems, titanium white, sepiolite and alumina silicate fiber which are added are taken as high temperature-resistant fillers, expansible graphite flake is particularly added and is taken as a fire-proof and corrosion-proof filler and a small number of film forming aids and water-based antifoaming agents are added simultaneously. The formed fire-proof paint has high expansion rate (about 15 times), fire endurance of up to 90 minutes (the coating thickness is 2 millimeters) and has high corrosion resistance. The preparation method of the paint is simple and environmentally-friendly and has low cost and wide application.

Description

Technical field [0001] The invention belongs to the technical field of fire-retardant coatings, and specifically relates to a water-based ultra-thin expansion steel structure fire-proof and anti-corrosion dual-functional fire-retardant coating and a preparation method thereof. Background technique [0002] There are currently two main categories of existing steel structure fire retardant coatings at home and abroad: non-intumescent fire retardant coatings and intumescent fire retardant coatings. Due to the poor fire protection and anti-corrosion of the former, they have been gradually eliminated. There are many types of intumescent steel structure fire retardant coatings, which can be divided into three categories: thick, thin and ultra-thin according to coating thickness; and can be divided into three categories: water-based, solvent-based and powder based on their material form. Among them, water-based ultra-thin intumescent steel structure fire retardant coatings have goo...

AI Technical Summary

Problems solved by technology

Although these coatings have a good fireproof effect, they contain a large amount of solvents, which are easy to cause pollution to the environment.

What's more serious is that the toxic gas generated by the combustion of halogens in the fire is likely to cause suffocation and poisoning of personnel, and is harmful to the affected and firefighters.