Aqueous weather-resisting polysiloxane coating

Abstract

The invention discloses aqueous weather-resisting polysiloxane coating. The aqueous weather-resisting polysiloxane coating is composed of a component A and a component B, wherein the weight ratio of the component A to the component B is 10 to (0.5 to 1.5); the component A is prepared from the following raw materials in parts by weight: 20 to 40 parts of modified polysiloxane resin, 15 to 30 parts of aqueous fluorocarbon resin, 5 to 20 parts of aqueous weather-resisting alicyclic epoxy resin, 5 to 15 parts of precipitated barium sulfate, 5 to 10 parts of calcined kaolin, 15 to 30 parts of nano material, 1 to 2 parts of hydroxypropyl methyl cellulose, 1 to 2 parts of de-foaming agent, 1 to 2 parts of wetting agent, 1 to 2 parts of dispersant, 1 to 2 parts of flatting agent and 15 to 30 parts of water; the component B is prepared from the following raw materials in parts by weight: 5 to 10 parts of aqueous polyurethane curing agent, 1 to 4 parts of aminosilane curing agent, 10 to 18 parts of propylene glycol monomethyl ether acetate and 0.2 to 0.8 parts of catalyst. The aqueous weather-resisting polysiloxane coating is environmentally friendly and has excellent adhering force and antiseptic property, and long service life.

Description

technical field [0001] The invention relates to the technical field of polysiloxane coatings, in particular to a water-based weather-resistant polysiloxane coating. Background technique [0002] At present, in terms of steel structures, on the one hand, most of the anti-rust coatings used are solvent-based anti-corrosion coatings, which contain a large amount of organic solvents that will be released during production and construction, which will cause harm to the health of workers and pollute the environment. On the other hand, in bridge steel structure products, due to the influence of construction environment, workpiece surface treatment, product use environment, etc., the anti-corrosion coatings used generally have defects such as poor adhesion, poor corrosion resistance, and short service life, resulting in The steel structure of the bridge has a large potential safety hazard, resulting in serious loss and waste of manpower and material resources. Contents of the inve...

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Problems solved by technology

[0002] At present, in terms of steel structures, on the one hand, most of the anti-rust coatings used are solvent-based anti-corrosion coatings, which contain a large amount of organic solvents that will be released during production and construction, which will cause harm to the health of workers and pollute the environment. On the other hand, in bridge steel structure products, due to the influence of construction environment, workpiece surface treatment, product use environment, etc., the anti-corrosion coatings used generally have defects such as poor adhesion, poor corrosion resistance, and short service life, resulting in The steel structure of the bridge has great potential safety hazards, resulting in serious loss and waste of manpower and material resources