Water-based transparent anticorrosive paint, preparation method and application method thereof

Abstract

The invention discloses a water-based transparent anticorrosive paint, a preparation method and an application method thereof. The preparation method thereof comprises the following steps: firstly, utilizing an emulsifier to emulsify epoxy resin into an epoxy resin micro-fine emulsion; then adding various auxiliaries, rust-proofing pigments and water, and utilizing a high-speed disperser to evenly disperse the mixture; and finally grinding the dispersed mixture into the water-based transparent anticorrosive paint with the fineness less than 30 mu m by utilizing a sand mill. The application method thereof comprises: adding a water-based epoxy hardener into the water-based transparent anticorrosive paint in the mass ratio of 2:1. The water-based transparent anticorrosive paint is matched with the water-based epoxy hardener for use; and after being covered on ferrous metal, being subjected to chemical reaction and being crosslinked to form a film, the water-based transparent anticorrosive paint has strong adhesive force, good rust prevention, water resistance, oil resistance and other performances, and can maintain the primary color of metal.

Description

technical field

[0001] The invention relates to the technical field of chemical industry, in particular to a water-based transparent anticorrosion paint and its preparation and application method. technical background

[0002] my country is a big steel country and also a big country that produces seamless steel pipes. Many seamless steel pipes are exported to other countries and regions. Since the seamless steel pipe is easy to oxidize and rust in the natural state, it has a lot of influence on its appearance and quality. The strength has a great influence, and the anti-corrosion treatment of seamless steel pipes includes phosphating, passivation, coating, etc., of which coating accounts for a large proportion. At present, most of them are painted with solvent-based coatings. Solvent-based coatings contain a large amount of organic solvents, which pollute the environment and have a serious impact on the health of operators. Moreover, there are environmental protection probl...

Examples

preparation example Construction

[0035] The preparation method of above-mentioned water-based transparent anticorrosion coating comprises the steps: A, the preparation of emulsifier: carry out with bisphenol A type epoxy resin and Polyethylene Glycol according to the mol ratio of epoxy group and hydroxyl be the ratio of 1: 1 After mixing, put it into a flask with a stirring device, heat up to 80-90°C to melt the raw materials, stir and mix evenly, add the catalyst boron trifluoride etherate complex dropwise in a proportion of 0.005%-0.03% of the total amount of materials, at 80 React at ~90°C for 1 hour, discharge the material, cool at room temperature to obtain a polymer emulsifier, and then follow the formula of polymer emulsifier: benzylphenol polyoxyethylene ether formaldehyde condensate: phenol formaldehyde condensate sulfonic acid sodium salt = 2:1 : 1 ratio mixes and makes epoxy resin emulsifier; B, the preparation of epoxy resin emulsion: utilize the method for high-speed dispersion, epoxy resin is emu...

Embodiment 1

[0042] The formula used to prepare the water-based transparent anti-corrosion paint is: 30% epoxy resin emulsion; 50% transparent anti-rust pigment; 3% auxiliary agent; 17% water. Among them, the main components of the transparent antirust pigment are aluminum dihydrogen phosphate and aluminum tripolyphosphate; the epoxy resin emulsion is an epoxy emulsion obtained after emulsifying with bisphenol A epoxy resin; the auxiliary agents are dispersants and defoamers , Anti-flash rust agent, leveling agent, anti-settling agent, anti-fungal agent and thickener.

[0043]The preparation method of water-based transparent anticorrosion coating: A, the preparation of emulsifier: bisphenol A type epoxy resin and Polyethylene Glycol are mixed according to the mol ratio of epoxy group and hydroxyl and then add the ratio of 1: 1 with In the flask of the stirring device, heat up to 80°C to melt the raw materials, stir and mix evenly, add the catalyst boron trifluoride etherate complex dropwis...

Embodiment 2

[0047] The formula used to prepare the water-based transparent anticorrosion paint is: 40% epoxy resin emulsion; 35% transparent antirust pigment; 5% additive; 20% water. Among them, the main component of the transparent anti-rust pigment is aluminum tripolyphosphate; the epoxy resin emulsion is an epoxy emulsion obtained after emulsifying with bisphenol A epoxy resin; the auxiliary agents are dispersant, defoamer, anti-flash rust agent , leveling agent, anti-settling agent, anti-fungal agent and thickener.

[0048] The preparation method of water-based transparent anticorrosion coating: A, the preparation of emulsifier: bisphenol A type epoxy resin and Polyethylene Glycol are mixed according to the mol ratio of epoxy group and hydroxyl and then add the ratio of 1: 1 with In the flask of the stirring device, heat up to 90°C to melt the raw materials, stir and mix evenly, add the catalyst boron trifluoride etherate complex dropwise in a proportion of 0.005% of the total amount ...

technical field

[0001] The invention relates to the technical field of chemical industry, in particular to a water-based transparent anticorrosion paint and its preparation and application method. technical background

[0002] my country is a big steel country and also a big country that produces seamless steel pipes. Many seamless steel pipes are exported to other countries and regions. Since the seamless steel pipe is easy to oxidize and rust in the natural state, it has a lot of influence on its appearance and quality. The strength has a great influence, and the anti-corrosion treatment of seamless steel pipes includes phosphating, passivation, coating, etc., of which coating accounts for a large proportion. At present, most of them are painted with solvent-based coatings. Solvent-based coatings contain a large amount of organic solvents, which pollute the environment and have a serious impact on the health of operators. Moreover, there are environmental protection probl...

Examples

preparation example Construction

[0035] The preparation method of above-mentioned water-based transparent anticorrosion coating comprises the steps: A, the preparation of emulsifier: carry out with bisphenol A type epoxy resin and Polyethylene Glycol according to the mol ratio of epoxy group and hydroxyl be the ratio of 1: 1 After mixing, put it into a flask with a stirring device, heat up to 80-90°C to melt the raw materials, stir and mix evenly, add the catalyst boron trifluoride etherate complex dropwise in a proportion of 0.005%-0.03% of the total amount of materials, at 80 React at ~90°C for 1 hour, discharge the material, cool at room temperature to obtain a polymer emulsifier, and then follow the formula of polymer emulsifier: benzylphenol polyoxyethylene ether formaldehyde condensate: phenol formaldehyde condensate sulfonic acid sodium salt = 2:1 : 1 ratio mixes and makes epoxy resin emulsifier; B, the preparation of epoxy resin emulsion: utilize the method for high-speed dispersion, epoxy resin is emu...

Embodiment 1

[0042] The formula used to prepare the water-based transparent anti-corrosion paint is: 30% epoxy resin emulsion; 50% transparent anti-rust pigment; 3% auxiliary agent; 17% water. Among them, the main components of the transparent antirust pigment are aluminum dihydrogen phosphate and aluminum tripolyphosphate; the epoxy resin emulsion is an epoxy emulsion obtained after emulsifying with bisphenol A epoxy resin; the auxiliary agents are dispersants and defoamers , Anti-flash rust agent, leveling agent, anti-settling agent, anti-fungal agent and thickener.

[0043]The preparation method of water-based transparent anticorrosion coating: A, the preparation of emulsifier: bisphenol A type epoxy resin and Polyethylene Glycol are mixed according to the mol ratio of epoxy group and hydroxyl and then add the ratio of 1: 1 with In the flask of the stirring device, heat up to 80°C to melt the raw materials, stir and mix evenly, add the catalyst boron trifluoride etherate complex dropwis...

Embodiment 2

[0047] The formula used to prepare the water-based transparent anticorrosion paint is: 40% epoxy resin emulsion; 35% transparent antirust pigment; 5% additive; 20% water. Among them, the main component of the transparent anti-rust pigment is aluminum tripolyphosphate; the epoxy resin emulsion is an epoxy emulsion obtained after emulsifying with bisphenol A epoxy resin; the auxiliary agents are dispersant, defoamer, anti-flash rust agent , leveling agent, anti-settling agent, anti-fungal agent and thickener.

[0048] The preparation method of water-based transparent anticorrosion coating: A, the preparation of emulsifier: bisphenol A type epoxy resin and Polyethylene Glycol are mixed according to the mol ratio of epoxy group and hydroxyl and then add the ratio of 1: 1 with In the flask of the stirring device, heat up to 90°C to melt the raw materials, stir and mix evenly, add the catalyst boron trifluoride etherate complex dropwise in a proportion of 0.005% of the total amount ...