A fire-proof and anti-corrosion function integrated coating for steel structure and preparation method thereof

Abstract

The invention provides steel structure fireproof anticorrosion function integrated coating and a preparing method thereof. The coating is prepared by compounding benzoic acid functionalized graphene, water-borne epoxy resin, a water-borne curing agent and water. The benzoic acid functionalized graphene is prepared from graphene and para aminobenzoic acid. The preparing method adopts a hydrothermal method to prepare the graphene and further functionalizes the graphene to generate the benzoic acid functionalized graphene as a nanofiller, and the benzoic acid functionalized graphene is compounded with the water-borne epoxy resin to form the steel structure fireproof anticorrosion function integrated coating, which has the characteristics of small filler use level, environment friendliness in a preparing process and low energy consumption. In the preparing method, the filler and the water-borne epoxy resin have better compatibility, and the crosslinking density of a coating is further increased, so that the thermal barrier property and corrosion resistance of the epoxy resin are furthest improved, more ideal flame-retardant and anticorrosion effects are achieved, the prevalent defects of poor barrier property and short anticorrosion period of the current water-borne anticorrosion coating are overcome, and better application prospect and practical significance are realized.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a coating with integrated fireproofing and anticorrosion functions for steel structures and a preparation method thereof. Background technique [0002] Steel structure is one of the more common structural forms in modern construction engineering, and it is the most revolutionary new development and application of architecture after reinforced concrete. Compared with traditional buildings, steel structure buildings have higher strength and better earthquake resistance due to the use of steel plates or section steel instead of reinforced concrete. [0003] At present, China's steel structure construction engineering technology is becoming more and more mature, and it is widely used in high-rise buildings. Diwang Building in Shenzhen, Jinmao Building in Pudong, Shanghai, Jingguang Center, Bird's Nest, CCTV New Building, Water Cube, etc. Large buildings are designed with steel stru...

AI Technical Summary

Problems solved by technology

However, due to the poor thermal barrier and anti-corrosion properties of ordinary water-based epoxy anti-corrosion coatings, its development has been hindered to a certain extent.

People usually introduce inorganic or organic particles to compound them, but because nano-inorganic particles are easy to agglomerate and have poor compatibility with organic resins, stress cracking and protection defects are easy to occur at the particle aggregation, and a good complementary effect of modification cannot be achieved.

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