CN115772358A - A kind of water-based epoxy zinc-rich heavy-duty anti-corrosion primer and preparation method thereof - Google Patents

Abstract

The invention relates to a water-based epoxy zinc-rich heavy-duty anti-corrosion primer, comprising material A and material B, the weight ratio of material A and material B is 3:1-8:1; the material A includes The following components counted: 5-15 parts of pure water-based epoxy emulsifier, 2-8 parts of propylene glycol methyl ether, 1-5 parts of co-emulsifier, 0.2-1.5 parts of anti-settling agent, 70-100 parts of zinc powder; The B material includes the following components in parts by weight: 80-100 parts of water-based epoxy resin, 7-10 parts of water, 0.1-1 part of defoamer, and 0.5-1.5 parts of thickener. The invention can solve the problem of changing the epoxy zinc-rich heavy-duty anti-corrosion coating from oil to water, can completely replace the oily epoxy zinc-rich primer, and is safer to manufacture and more environmentally friendly to use.

Description

A kind of water-based epoxy zinc-rich heavy-duty anti-corrosion primer and preparation method thereof

technical field

The invention relates to the field of epoxy zinc-rich coatings, in particular to a water-based epoxy zinc-rich heavy-duty anti-corrosion primer and a preparation method thereof.

Background technique

At present, epoxy zinc-rich coatings are mostly oil-based coatings, which have the common disadvantages of oil-based coatings. If they are not friendly to the environment, they will cause environmental pollution and make the production environment dangerous.

Facing the urgent demand of oil-to-water conversion, there is an urgent need to provide a water-based epoxy zinc-rich coating.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a water-based epoxy zinc-rich heavy-duty anti-corrosion primer and its preparation method, which can solve the problem of changing the epoxy zinc-rich heavy-duty anti-corrosion coating from oil to water, and can completely replace the oil-based epoxy coating. Oxygen-rich zinc primer, safer to make and more environmentally friendly to use.

The purpose of the present invention is achieved through the following technical solutions:

A water-based epoxy zinc-rich heavy-duty anti-corrosion primer, including material A and material B, the weight ratio of material A and material B is 3:1-8:1;

Described A material comprises the following components in parts by weight:

Pure water-based epoxy emulsifier 5-15 parts Propylene glycol methyl ether 2-8 parts Co-emulsifier 1-5 parts

Anti-settling agent 0.2-1.5 parts Zinc powder 70-100 parts

The B material includes the following components in parts by weight:

Water-based epoxy resin 80-100 parts water 7-10 parts defoamer 0.1-1 part thickener 0.5-1.5 parts.

Further, the weight ratio of the A material to the B material is 5:1;

The parts by weight of each component of the A material are:

10 parts of pure water-based epoxy emulsifier 3 parts of propylene glycol methyl ether 1.5 parts of co-emulsifier

Anti-sedimentation agent 0.5 parts Zinc powder 85 parts

The parts by weight of each component of the B material are:

Water-based epoxy resin 90 parts water 9.1 parts defoamer 0.2 parts thickener 0.7 parts.

Further, the zinc powder is zinc phosphate.

Further, the co-emulsifier includes wetting agent, foam clearing agent and dispersant.

Further, the thickener includes a high-shear thickener and a low-shear thickener.

A preparation method of a water-based epoxy zinc-rich heavy-duty anti-corrosion primer, which is used to prepare the above-mentioned water-based epoxy zinc-rich heavy-duty anti-corrosion primer. The preparation method of the A material comprises the following steps:

S101: adding propylene glycol methyl ether to the pure water-based epoxy emulsifier and then stirring to obtain the first material;

S102: stirring the anti-sedimentation agent;

S103: Stir the first material, co-emulsifier and anti-sedimentation agent to obtain a second material;

S104: adding zinc powder to the second material for dispersion;

The preparation method of described B material comprises the following steps:

S201: After stirring the water-based epoxy resin, add water and continue stirring to disperse to obtain a third material;

S202: adding an antifoaming agent to the third material and reacting for a period of time after stirring to obtain the fourth material;

S203: Add the thickener to the fourth material and then stir to complete the dispersion reaction.

Further, the step S203 includes the following sub-steps:

(1) Add high-shear thickener to the fourth material, stir and disperse for 5 minutes;

(2) Add low-shear thickener and continue to stir and disperse for 10-15 minutes.

Further, the co-emulsifier is prepared after stirring and reacting the foam clearing agent, dispersant and wetting agent.

The beneficial effects of the present invention are:

The invention can solve the problem of changing the epoxy zinc-rich heavy-duty anti-corrosion paint from oil to water, can completely replace the oily epoxy zinc-rich primer, and is safer to manufacture and more environmentally friendly to use. .

Detailed ways

Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

Embodiment one:

A water-based epoxy zinc-rich heavy-duty anti-corrosion primer, including material A and material B, the weight ratio of material A and material B is 5:1;

Described A material comprises the following components in parts by weight:

10 parts of pure water-based epoxy emulsifier 3 parts of propylene glycol methyl ether 1.5 parts of co-emulsifier

Anti-sedimentation agent 0.5 parts Zinc powder 85 parts

The zinc powder is zinc phosphate.

The co-emulsifiers include:

0.5 parts of wetting agent 0.2 parts of foam clearing agent 0.8 parts of dispersant

The B material includes the following components in parts by weight:

90 parts of water-based epoxy resin 9.1 parts of water 0.2 part of defoamer 0.7 part of thickener The thickener includes 0.35 parts of high-shear thickener and 0.35 part of low-shear thickener

The abbreviation of propylene glycol methyl ether is DPM.

A preparation method of a water-based epoxy zinc-rich heavy-duty anti-corrosion primer, which is used to prepare the above-mentioned water-based epoxy zinc-rich heavy-duty anti-corrosion primer. The preparation method of the A material comprises the following steps:

S101: adding propylene glycol methyl ether to the pure water-based epoxy emulsifier and then stirring to obtain the first material;

Add pure water-based epoxy emulsifier to the container at 800 rpm and stir for 20 minutes; then add propylene glycol methyl ether and stir for 5 minutes to obtain a film-forming material;

S102: stirring the anti-sedimentation agent;

Add the anti-settling agent at 1000 rpm, stir for 5 minutes, and obtain the paint carrier.

S103: Stir the first material, co-emulsifier and anti-sedimentation agent to obtain a second material;

At 800 rpm, stir in sequence to pour the first material, co-emulsifier and anti-sedimentation agent into the container.

S104: adding zinc powder to the second material for dispersion;

Slowly add zinc powder, disperse at 600 rpm for 15 minutes after adding, and then complete the packaging of material A.

The co-emulsifier is prepared after stirring and reacting foam clearing agent, dispersant and wetting agent.

specifically. Add foam clearing agent, dispersant, and wetting agent to the container at 1000 rpm for emulsification, and react for 10 minutes after adding. Achieve film assist performance.

The preparation method of described B material comprises the following steps:

S201: After stirring the water-based epoxy resin, add water and continue stirring to disperse to obtain the third material;

First add water-based epoxy resin to the container, stir at 800 speed for 10 minutes, then slowly add water, continue to stir and disperse for 15 minutes, and obtain a film-forming material;

S202: adding an antifoaming agent to the third material and reacting for a period of time after stirring to obtain the fourth material;

Increase the rotational speed of the container in step S201 to 1000, slowly add the defoamer, and react for 15 minutes after the addition is complete, so as to obtain the auxiliary performance of the coating film.

S203: adding a thickener to the fourth material and then stirring to complete the dispersion reaction;

The step S203 includes the following sub-steps:

(1) Add high-shear thickener to the fourth material, stir and disperse for 5 minutes;

(2) Add low-shear thickener and continue to stir and disperse for 10-15 minutes.

Reduce the speed of the container to 800, add high-shear thickener, disperse for 5 minutes, add low-shear thickener, continue to disperse for 10-15 minutes, check the viscosity, the viscosity is 65-70 (Stormer viscometer) .

When adding high-shear thickener and low-shear thickener, it must be added slowly to observe the viscosity change.

Carry out a spray board test on material B, and complete the packaging of material B after passing the test.

Construction ratio: A material: B material = 5:1

Package product:

1) Anti-corrosion coating for intermediate coating of water-based mica iron

2) Water-based acrylic PU top coat

3) Water-based polyurethane PU top coating

4) Water-based fluorocarbon PU topcoat

A raw material selection:

Raw material selection of material B:

Water-based epoxy resin Bogao Chemical Company provides defoamer American Air Chemicals provides thickener (high-shear thickener and low-shear thickener) American Dow Company provides a kind of water-based epoxy zinc-enriched made in this embodiment The product characteristics of heavy-duty anti-corrosion primer coating are as follows:

Main Specifications:

The specific construction method of a kind of water-based epoxy zinc-rich heavy-duty anti-corrosion primer that the present embodiment makes:

Substrate pretreatment is carried out in accordance with national metal pretreatment standards

Coating construction is adjusted according to construction viscosity 55-65 (4 cups of coating)

Construction methods Airless spraying, hand spray gun spraying, electrostatic hand spraying, mechanical spraying, automatic spraying

Drying conditions: natural drying at room temperature, surface drying for 40 minutes, hard drying for 24 hours. Bake at 90 degrees for 40 minutes.

A water-based epoxy zinc-rich heavy-duty anti-corrosion primer made in this embodiment can solve the problem of oil-based epoxy zinc-rich heavy-duty anti-corrosion paint, and can completely replace oily epoxy zinc-rich primer. It is safer to make and easier to use. Environmental friendly.

Embodiment two:

A water-based epoxy zinc-rich heavy-duty anti-corrosion primer, including material A and material B, the weight ratio of material A and material B is 3:1;

Described A material comprises the following components in parts by weight:

5 parts of pure water-based epoxy emulsifier 2 parts of propylene glycol methyl ether 1 part of co-emulsifier

Anti-settling agent 0.2 parts Zinc powder 70 parts

The B material includes the following components in parts by weight:

80 parts of water-based epoxy resin, 7 parts of water, 0.1 part of defoamer, 0.5 part of thickener.

The zinc powder is zinc phosphate.

The co-emulsifiers include wetting agents, foam cleaners and dispersants.

The thickeners include high-shear thickeners and low-shear thickeners.

A preparation method of a water-based epoxy zinc-rich heavy-duty anti-corrosion primer, which is used to prepare the above-mentioned water-based epoxy zinc-rich heavy-duty anti-corrosion primer. The preparation method of the A material comprises the following steps:

S101: adding propylene glycol methyl ether to the pure water-based epoxy emulsifier and then stirring to obtain the first material;

S102: stirring the anti-sedimentation agent;

S103: Stir the first material, co-emulsifier and anti-sedimentation agent to obtain a second material;

S104: adding zinc powder to the second material for dispersion;

The preparation method of described B material comprises the following steps:

S201: After stirring the water-based epoxy resin, add water and continue stirring to disperse to obtain a third material;

S202: adding an antifoaming agent to the third material and reacting for a period of time after stirring to obtain the fourth material;

S203: Add the thickener to the fourth material and then stir to complete the dispersion reaction.

The step S203 includes the following sub-steps:

(1) Add high-shear thickener to the fourth material, stir and disperse for 5 minutes;

(2) Add low-shear thickener and continue to stir and disperse for 10-15 minutes.

The co-emulsifier is prepared after stirring and reacting foam clearing agent, dispersant and wetting agent.

Embodiment three:

A water-based epoxy zinc-rich heavy-duty anti-corrosion primer, including material A and material B, the weight ratio of material A and material B is 8:1;

Described A material comprises the following components in parts by weight:

15 parts of pure water-based epoxy emulsifier 8 parts of propylene glycol methyl ether 5 parts of co-emulsifier

Anti-sedimentation agent 1.5 parts Zinc powder 100 parts

The B material includes the following components in parts by weight:

Water-based epoxy resin 100 parts water 10 parts defoamer 1 part thickener 1.5 parts.

The zinc powder is zinc phosphate.

The co-emulsifiers include wetting agents, foam cleaners and dispersants.

The thickeners include high-shear thickeners and low-shear thickeners.

A preparation method of a water-based epoxy zinc-rich heavy-duty anti-corrosion primer, which is used to prepare the above-mentioned water-based epoxy zinc-rich heavy-duty anti-corrosion primer. The preparation method of the A material comprises the following steps:

S101: adding propylene glycol methyl ether to the pure water-based epoxy emulsifier and then stirring to obtain the first material;

S102: stirring the anti-sedimentation agent;

S103: Stir the first material, co-emulsifier and anti-sedimentation agent to obtain a second material;

S104: adding zinc powder to the second material for dispersion;

The preparation method of described B material comprises the following steps:

S201: After stirring the water-based epoxy resin, add water and continue stirring to disperse to obtain the third material;

S202: adding an antifoaming agent to the third material and reacting for a period of time after stirring to obtain the fourth material;

S203: Add the thickener to the fourth material and then stir to complete the dispersion reaction.

The step S203 includes the following sub-steps:

(1) Add high-shear thickener to the fourth material, stir and disperse for 5 minutes;

(2) Add low-shear thickener and continue to stir and disperse for 10-15 minutes.

The co-emulsifier is prepared after stirring and reacting foam clearing agent, dispersant and wetting agent.

The above-mentioned embodiments only express the specific implementation manner of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims (8)

1. The water-based epoxy zinc-rich heavy-duty anticorrosive primer coating is characterized by comprising the following components in parts by weight: the material comprises a material A and a material B, wherein the weight ratio of the material A to the material B is 3:1-8:1;

the material A comprises the following components in parts by weight:

5-15 parts of pure water epoxy emulsifier, 2-8 parts of propylene glycol methyl ether and 1-5 parts of co-emulsifier

0.2-1.5 parts of anti-settling agent, 70-100 parts of zinc powder

The material B comprises the following components in parts by weight:

80-100 parts of water-based epoxy resin, 7-10 parts of water, 0.1-1 part of defoaming agent and 0.5-1.5 parts of thickening agent.

2. The water-based epoxy zinc-rich heavy-duty anti-corrosion primer coating as claimed in claim 1, is characterized in that: the weight ratio of the material A to the material B is 5:1;

the material A comprises the following components in parts by weight:

pure waterborne epoxy emulsifier 10 parts propylene glycol methyl ether 3 parts coemulsifier 1.5 parts

0.5 part of anti-settling agent and 85 parts of zinc powder

The material B comprises the following components in parts by weight:

90 parts of water-based epoxy resin, 9.1 parts of water, 0.2 part of defoaming agent and 0.7 part of thickening agent.

3. The water-based epoxy zinc-rich heavy-duty anti-corrosion primer coating as claimed in claim 1, is characterized in that: the zinc powder is zinc phosphate.

4. The water-based epoxy zinc-rich heavy-duty anti-corrosion primer coating as claimed in claim 1, is characterized in that: the auxiliary emulsifier comprises a wetting agent, a foam cleaning agent and a dispersing agent.

5. The water-based epoxy zinc-rich heavy-duty prime coating as claimed in claim 1, characterized in that: the thickener includes a high shear thickener and a low shear thickener.

6. A preparation method of a water-based epoxy zinc-rich heavy-duty prime coat paint, which is used for preparing the water-based epoxy zinc-rich heavy-duty prime coat paint disclosed by claim 1, and is characterized in that:

the preparation method of the material A comprises the following steps:

s101: adding propylene glycol methyl ether into the pure water epoxy emulsifier and stirring to obtain a first material;

s102: stirring the anti-settling agent;

s103: stirring the first material, the auxiliary emulsifier and the anti-settling agent to obtain a second material;

s104: adding zinc powder into the second material for dispersion;

the preparation method of the material B comprises the following steps:

s201: adding water into the water-based epoxy resin after stirring, continuously stirring and dispersing to obtain a third material;

s202: adding a defoaming agent into the third material, stirring and reacting for a period of time to obtain a fourth material;

s203: and adding the thickening agent into the fourth material, and stirring to complete the dispersion reaction.

7. The preparation method of the water-based epoxy zinc-rich heavy-duty prime coating according to claim 6, characterized in that: the step S203 includes the following substeps:

(1) Adding a high-shear thickening agent into the fourth material, stirring and dispersing for 5 minutes;

(2) Adding the low shear thickening agent, continuing stirring and dispersing for 10-15 minutes.

8. The preparation method of the water-based epoxy zinc-rich heavy-duty prime coating according to claim 6, characterized in that: the auxiliary emulsifier is prepared by stirring and reacting a foam cleaning agent, a dispersing agent and a wetting agent.