Water-based high-weather-resistance fair-faced concrete protective coating system and preparation method thereof

Abstract

The invention discloses a water-based high-weather-resistance fair-faced concrete protective coating system and a preparation method thereof, and belongs to the technical field of building materials.The protective coating system is a composite coating system of a water-borne epoxy resin cured coating, a water-borne fluorocarbon resin cured coating, a water-borne fluorocarbon resin cured coating containing color paste and a water-borne fluorocarbon resin cured coating with high fluorine content. The protective coating system is simple in construction process, green and environment-friendly; the excellent performances of strong bonding force, good corrosion resistance, good weather resistance, long service life and the like are realized. According to the fair-faced concrete protective coating, the intrinsic aesthetic feeling of fair-faced concrete can be reserved, the protective effects of super-strong weather resistance, super-strong bonding force and no peeling or falling after long-term use can be provided, the service life of a concrete structure is further prolonged, and the fair-faced concrete protective coating is suitable for long-acting protection of various fair-faced concrete buildings.

Description

technical field [0001] The invention discloses a protective coating, in particular to a water-based high-weather-resistant fair-faced concrete protective coating system and a preparation method thereof, and relates to the technical field of building materials. Background technique [0002] Fair-faced concrete is the most advanced form of expression in concrete. It shows its charm in more and more buildings with its elegant plain face, and has a simple, natural and calm artistic effect. Fair-faced concrete has been popularized from cast-in-place projects such as airports, roads and bridges to the field of civil prefabricated buildings. With the increasing application of fair-faced concrete, the problem of surface protection has become more and more prominent. [0003] Fair-faced concrete directly uses the natural surface effect of concrete as a finish, and there is no longer any coating, tiles, stones and other materials. Therefore, the protection of fair-faced concrete has t...

AI Technical Summary

Problems solved by technology

The permeable structure mainly adopts cement-based permeable crystalline and organosilicon permeable materials. The permeable system provides hydrophobic effect within 2-5mm of the concrete surface and has a certain waterproof and impervious ability, but the protection durability of this system is limited, and Poor recoatability

A kind of concrete protective coating system disclosed by CN201872393U comprises silane permeable layer, silane hybrid elastic breathable isolation layer, surface decoration layer, the concrete protective coating system disclosed in this patent has gas permeability, and can not isolate gas corrosion medium such as carbon dioxide, sulfur dioxide The intrusion and corrosion of concrete, etc., have limited protective effect on concrete, and the UV aging resistance of silane is worse than that of fluorocarbon materials, which makes the service life of the system shorter

CN102976788A discloses a coating for clear-water concrete surface protection composed of primer, intermediate paint and topcoat. The coatings used in this system are all single-component products, which are essentially thermoplastic film-forming without curing agent reaction crosslinking. The adhesion of the layer is average, the cohesive strength and hardness are low, the corrosion resistance and aging resistance are insufficient, and the fluorine content of the key performance index of the fluorocarbon polymer emulsion topcoat is not specified, and the UV aging resistance of the system cannot be guaranteed

CN103146302A provides the paint and construction technology for fair-faced concrete protection, and the paint used is also a single-component product, which has the same problem as above, and does not make clear requirements for the quality inspection of the construction site, and the quality of the construction site cannot be effectively supervised As a result, actual projects often fail to achieve the designed protection effect

Images