CN117820930A - Heavy metal-free waterborne epoxy primer and preparation method thereof - Google Patents
Heavy metal-free waterborne epoxy primer and preparation method thereof Download PDFInfo
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- CN117820930A CN117820930A CN202311751970.0A CN202311751970A CN117820930A CN 117820930 A CN117820930 A CN 117820930A CN 202311751970 A CN202311751970 A CN 202311751970A CN 117820930 A CN117820930 A CN 117820930A
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- 239000004593 Epoxy Substances 0.000 title claims abstract description 81
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000000843 powder Substances 0.000 claims abstract description 34
- 239000000839 emulsion Substances 0.000 claims abstract description 22
- 239000002318 adhesion promoter Substances 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 239000008367 deionised water Substances 0.000 claims abstract description 17
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 17
- 239000002270 dispersing agent Substances 0.000 claims abstract description 17
- 239000010433 feldspar Substances 0.000 claims abstract description 17
- 239000010445 mica Substances 0.000 claims abstract description 17
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 17
- 239000002562 thickening agent Substances 0.000 claims abstract description 17
- 238000009736 wetting Methods 0.000 claims abstract description 17
- 239000000080 wetting agent Substances 0.000 claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 15
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003973 paint Substances 0.000 claims abstract description 14
- 239000000049 pigment Substances 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 239000013530 defoamer Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 10
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 9
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 8
- 229920000570 polyether Polymers 0.000 claims description 8
- 229910001385 heavy metal Inorganic materials 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000003112 inhibitor Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 4
- 229960000892 attapulgite Drugs 0.000 claims description 3
- OOCMUZJPDXYRFD-UHFFFAOYSA-L calcium;2-dodecylbenzenesulfonate Chemical compound [Ca+2].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O.CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O OOCMUZJPDXYRFD-UHFFFAOYSA-L 0.000 claims description 3
- 239000002480 mineral oil Substances 0.000 claims description 3
- 235000010446 mineral oil Nutrition 0.000 claims description 3
- 229910052625 palygorskite Inorganic materials 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 239000002518 antifoaming agent Substances 0.000 abstract description 11
- 238000009472 formulation Methods 0.000 description 19
- 239000000203 mixture Substances 0.000 description 19
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000013556 antirust agent Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 239000000440 bentonite Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- 229920006334 epoxy coating Polymers 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910017059 organic montmorillonite Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Chemical group CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Paints Or Removers (AREA)
Abstract
The invention discloses a heavy metal-free water-based epoxy primer and a preparation method thereof, belonging to the technical field of water-based paint, and comprising deionized water, a wetting dispersant, a thickener, a defoaming agent, pigment, feldspar powder, mica powder, water-based epoxy emulsion, a film forming agent, an anti-flash rust agent, a substrate wetting agent and an adhesion promoter.
Description
Technical Field
The invention relates to the technical field of water-based paint, in particular to a heavy metal-free water-based epoxy primer and a preparation method thereof.
Background
According to data, about 20% of metal products in the world cannot be recycled due to corrosion damage, so that metal corrosion prevention production work is always a research hot spot, metal corrosion prevention comprises physical isolation, electrochemical protection and the like, and epoxy coatings are one type of physical isolation. The epoxy coating uses epoxy resin as a main film forming substance, polar groups such as hydroxyl groups, ether bonds and the like in the molecular structure of the epoxy resin have good adhesive force on the surfaces of metal base materials, ceramics, glass and the like, and the epoxy resin has low curing shrinkage rate and excellent corrosion resistance, and is widely applied in the coating industry.
The traditional solvent type paint contains a large amount of volatile solvents such as benzene, alcohols, esters, ketones and the like, so that the damage to the body of workers producing and coating is large, and the environmental damage caused by the volatilization of the solvents into the atmosphere is serious. Therefore, in order to reduce the release of harmful solvents in the paint, the environmental protection department of China greatly promotes the water-based paint, and the container industry basically realizes water-based paint at present. The water paint has low organic solvent content, water as dispersing medium, no burning and explosion, and safe storage and transportation. The existing water-based paint is mostly poor in corrosion resistance, so that the application effect is greatly reduced, and the water-based paint contains heavy metals, threats to the environment and human health, and is difficult to popularize and use in a large area.
Disclosure of Invention
In order to solve the problems, the invention provides a heavy metal-free waterborne epoxy primer and a preparation method thereof, and the heavy metal-free waterborne epoxy primer meets the national environmental protection requirements, and comprises the following components:
the first object of the invention is to provide a heavy metal-free water-based epoxy primer, which is technically characterized by comprising, by weight, 13.5-22.5 parts of deionized water, 0.8-2.0 parts of a wetting dispersant, 0.3-1.0 parts of a thickener, 0.3-0.8 parts of a defoamer, 10-15 parts of a pigment, 4-15 parts of feldspar powder, 3-6 parts of mica powder, 30-45 parts of a water-based epoxy emulsion, 1.6-2.4 parts of a film former, 0.3-0.6 parts of a flash rust inhibitor, 0.2-0.5 parts of a base material wetting agent and 0.3-1.0 parts of an adhesion promoter.
In order to better solve the technical problems, the wetting dispersant in the heavy metal-free waterborne epoxy primer formula system is at least one of alkylphenol ethoxylates, calcium dodecyl benzene sulfonate and propylene glycol block polyether.
In order to better solve the technical problems, the thickener in the formula system of the heavy metal-free water-based epoxy primer is at least one of organic bentonite, organic montmorillonite and attapulgite.
In order to better solve the technical problems, the defoaming agent in the heavy metal-free waterborne epoxy primer formula system is at least one of an organosilicon defoaming agent, a polymer defoaming agent and a mineral oil defoaming agent.
In order to better solve the technical problems, the viscosity of the aqueous epoxy emulsion in the formula system of the heavy metal-free aqueous epoxy primer is 300-3000 mPa.s at 25 ℃; the pH value of the aqueous epoxy emulsion is 6.5-7.5.
In order to better solve the technical problems, the anti-flash rust agent in the heavy metal-free waterborne epoxy primer formula system is at least one of nitrite and organic complex.
In order to better solve the technical problems, the substrate wetting agent in the heavy metal-free waterborne epoxy primer formula system is polyether siloxane.
In order to better solve the technical problems, the adhesion promoter aqueous silane coupling agent in the heavy metal-free aqueous epoxy primer formula system is provided.
The second aim of the invention is to provide a preparation method of the heavy metal-free water-based epoxy primer, which is technically characterized by comprising the following steps:
adding deionized water, a wetting dispersant, a thickener and a defoamer into a reaction kettle, dispersing for 10-20min at the speed of 500-900rmp, and fully and uniformly stirring;
adding pigment, feldspar powder, mica powder and aqueous epoxy emulsion into the reaction kettle in the first step, dispersing for 10-30min at the speed of 1200-1400rmp, and sanding all materials to the fineness of below 50 mu m;
and thirdly, transferring the materials in the reaction kettle in the second step into a paint mixing cylinder, adding a film forming agent, a flash rust inhibitor, a substrate wetting agent and an adhesion promoter, dispersing at a speed of 1200-1400rmp for 10-20min, mixing with deionized water, and filtering with a 100-mesh filter screen to obtain the heavy metal-free water-based epoxy primer.
Compared with the prior art, the heavy metal-free waterborne epoxy primer and the preparation method thereof can achieve the following beneficial effects:
the heavy metal-free water-based epoxy primer comprises deionized water, a wetting dispersant, a thickener, a defoamer, a pigment, feldspar powder, mica powder, water-based epoxy emulsion, a film forming agent, an anti-flash rust agent, a base material wetting agent and an adhesion promoter, is environment-friendly and human-friendly due to the fact that no heavy metal is introduced, and can effectively enhance the hardness and wear resistance of a coating film by introducing the feldspar powder and the mica powder into a dispensing system, can fill tiny pits and defects on the surface of the coating, enables the surface of the coating to be smoother, enables the coating to have better gloss and texture, can improve the crack resistance of the coating, enables the coating to be more stable and durable in the use process, reduces the cost of the coating, and improves the competitiveness of products.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below in connection with specific embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
A heavy metal free waterborne epoxy primer includes 18kg deionized water, 1.4kg wetting dispersant, 0.6kg thickener, 0.5kg defoamer, 12.5kg pigment, 10kg feldspar powder, 4.5kg mica powder, 38kg waterborne epoxy emulsion, 1.5kg film former, 0.45kg anti-rust agent, 0.35kg substrate wetting agent and 0.6kg adhesion promoter.
Further, the wetting dispersant in the heavy metal-free waterborne epoxy primer formulation system of the embodiment is alkylphenol ethoxylate.
Further, the thickener in the heavy metal-free waterborne epoxy primer formulation system of the embodiment is organic bentonite.
Further, the defoaming agent in the heavy metal-free waterborne epoxy primer formulation system of the embodiment is an organosilicon defoaming agent.
Further, the viscosity of the aqueous epoxy emulsion in the heavy metal-free aqueous epoxy primer formulation system of the embodiment is 1700 mPa.s at 25 ℃; the pH value of the aqueous epoxy emulsion is 7.0.
Furthermore, the anti-flash rust agent in the heavy metal-free waterborne epoxy primer formula system of the embodiment is nitrite.
Further, the substrate wetting agent in the heavy metal-free waterborne epoxy primer formulation system of the embodiment is polyether siloxane.
Further, in the heavy metal-free waterborne epoxy primer formulation system of the embodiment, the adhesion promoter is a waterborne silane coupling agent.
According to the formula system, the preparation method of the heavy metal-free waterborne epoxy primer comprises the following steps of:
adding deionized water, a wetting dispersant, a thickener and a defoamer into a reaction kettle, dispersing for 15min at the speed of 700rmp, and fully and uniformly stirring;
adding pigment, feldspar powder, mica powder and aqueous epoxy emulsion into the reaction kettle in the first step, dispersing for 20min at the speed of 1300rmp, and sanding all materials to the fineness of below 50 mu m;
and thirdly, transferring the materials in the reaction kettle in the second step into a paint mixing cylinder, adding a film forming agent, an anti-flash rust agent, a substrate wetting agent and an adhesion promoter, dispersing at a speed of 1300rmp for 15min, mixing with deionized water, and filtering with a 100-mesh filter screen to obtain the heavy metal-free waterborne epoxy primer.
Example 2
A heavy metal free waterborne epoxy primer includes 13.5kg deionized water, 0.8kg wetting dispersant, 0.3kg thickener, 0.3kg defoamer, 10kg pigment, 4kg feldspar powder, 3kg mica powder, 30kg waterborne epoxy emulsion, 1.6kg film former, 0.3kg anti-rust agent, 0.2kg substrate wetting agent and 0.3kg adhesion promoter.
Further, the wetting dispersant in the heavy metal-free waterborne epoxy primer formulation system of the embodiment is calcium dodecyl benzene sulfonate.
Further, the thickener in the heavy metal-free waterborne epoxy primer formulation system of the embodiment is organic montmorillonite.
Furthermore, the defoaming agent in the heavy metal-free waterborne epoxy primer formulation system of the embodiment is a compound defoaming agent.
Further, the viscosity of the aqueous epoxy emulsion in the heavy metal-free aqueous epoxy primer formulation system of the embodiment is 300 mPas at 25 ℃; the pH of the aqueous epoxy emulsion was 6.5.
Furthermore, the anti-flash rust agent in the heavy metal-free waterborne epoxy primer formulation system of the embodiment is an organic complex.
Further, the substrate wetting agent in the heavy metal-free waterborne epoxy primer formulation system of the embodiment is polyether siloxane.
Further, in the heavy metal-free waterborne epoxy primer formulation system of the embodiment, the adhesion promoter is a waterborne silane coupling agent.
According to the formula system, the preparation method of the heavy metal-free waterborne epoxy primer comprises the following steps of:
adding deionized water, a wetting dispersant, a thickener and a defoamer into a reaction kettle, dispersing for 20min at the speed of 500rmp, and fully and uniformly stirring;
adding pigment, feldspar powder, mica powder and aqueous epoxy emulsion into the reaction kettle in the first step, dispersing for 30min at the speed of 1200rmp, and sanding all materials to the fineness of below 50 mu m;
and thirdly, transferring the materials in the reaction kettle in the second step into a paint mixing cylinder, adding a film forming agent, an anti-flash rust agent, a substrate wetting agent and an adhesion promoter, dispersing for 20min at the speed of 1200rmp, mixing with deionized water, and filtering with a 100-mesh filter screen to obtain the heavy metal-free waterborne epoxy primer.
Example 3
A heavy metal free waterborne epoxy primer includes 22.5kg deionized water, 2.0kg wetting dispersant, 1.0kg thickener, 0.8kg defoamer, 15kg pigment, 15kg feldspar powder, 6kg mica powder, 45kg waterborne epoxy emulsion, 2.4kg film former, 0.6kg anti-rust agent, 0.5kg substrate wetting agent and 1.0kg adhesion promoter.
Further, the wetting dispersant in the heavy metal-free waterborne epoxy primer formulation system of the embodiment is propylene glycol block polyether.
Further, the thickener in the heavy metal-free waterborne epoxy primer formulation system of the embodiment is attapulgite.
Furthermore, the defoaming agent in the heavy metal-free waterborne epoxy primer formula system of the embodiment is a mineral oil defoaming agent.
Further, the viscosity of the aqueous epoxy emulsion in the heavy metal-free aqueous epoxy primer formulation system of the embodiment is 3000 mPas at 25 ℃; the pH of the aqueous epoxy emulsion was 7.5.
Furthermore, the anti-flash rust agent in the heavy metal-free waterborne epoxy primer formulation system of the embodiment is at least one of nitrite and organic complex.
Further, the substrate wetting agent in the heavy metal-free waterborne epoxy primer formulation system of the embodiment is polyether siloxane.
Further, in the heavy metal-free waterborne epoxy primer formulation system of the embodiment, the adhesion promoter is a waterborne silane coupling agent.
According to the formula system, the preparation method of the heavy metal-free waterborne epoxy primer comprises the following steps of:
adding deionized water, a wetting dispersant, a thickener and a defoamer into a reaction kettle, dispersing for 10min at the speed of 900rmp, and fully and uniformly stirring;
adding pigment, feldspar powder, mica powder and aqueous epoxy emulsion into the reaction kettle in the first step, dispersing for 10min at the speed of 1400rmp, and sanding all materials to the fineness of below 50 mu m;
and thirdly, transferring the materials in the reaction kettle in the second step into a paint mixing cylinder, adding a film forming agent, an anti-flash rust agent, a substrate wetting agent and an adhesion promoter, dispersing for 10min at the speed of 1400rmp, mixing with deionized water, and filtering with a 100-mesh filter screen to obtain the heavy metal-free waterborne epoxy primer.
Comparative example 1
In this comparative example, "4kg of feldspar powder and 3kg of mica powder" in the example were changed to "7kg of mica powder", and the other operations were the same as in example 1.
Comparative example 2
In this comparative example, "4kg of feldspar powder and 3kg of mica powder" in the example were changed to "7kg of feldspar powder", and the other operations were the same as in example 1.
Comparative example 3
In this comparative example, "4kg of feldspar powder and 3kg of mica powder" in the example were deleted, and the other operations were the same as in example 1.
Test examples
Performance tests were performed on the heavy metal-free waterborne epoxy primers prepared in examples 1 to 3 and comparative examples 1 to 4, and the results are shown in table 1:
TABLE 1
The foregoing is merely exemplary of the present invention and is not intended to limit the present invention. Various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are to be included in the scope of the claims of the present invention.
Claims (9)
1. The heavy metal-free waterborne epoxy primer is characterized by comprising, by weight, 13.5-22.5 parts of deionized water, 0.8-2.0 parts of a wetting dispersant, 0.3-1.0 parts of a thickener, 0.3-0.8 parts of a defoamer, 10-15 parts of a pigment, 4-15 parts of feldspar powder, 3-6 parts of mica powder, 30-45 parts of a waterborne epoxy emulsion, 1.6-2.4 parts of a film forming agent, 0.3-0.6 parts of a flash rust inhibitor, 0.2-0.5 parts of a substrate wetting agent and 0.3-1.0 parts of an adhesion promoter.
2. The heavy metal-free waterborne epoxy primer of claim 1, wherein the wetting dispersant is at least one of alkylphenol ethoxylates, calcium dodecylbenzenesulfonate and propylene glycol block polyether.
3. The heavy metal-free waterborne epoxy primer of claim 1, wherein the thickener is at least one of organobentonite, organomontmorillonite and attapulgite.
4. The heavy metal-free waterborne epoxy primer of claim 1, wherein the defoamer is at least one of a silicone defoamer, a polymer defoamer and a mineral oil defoamer.
5. The heavy metal-free waterborne epoxy primer according to claim 1, wherein the viscosity of the waterborne epoxy emulsion at 25 ℃ is 300-3000 mPa-s; the pH value of the aqueous epoxy emulsion is 6.5-7.5.
6. The heavy metal-free waterborne epoxy primer of claim 1, wherein the flash rust inhibitor is at least one of nitrite and an organic complex.
7. The heavy metal free waterborne epoxy primer of claim 1, wherein the substrate wetting agent is a polyether siloxane.
8. The heavy metal-free waterborne epoxy primer of claim 1, wherein the adhesion promoter is a waterborne silane coupling agent.
9. The preparation method of the heavy metal-free waterborne epoxy primer is characterized by comprising the following steps of:
adding deionized water, a wetting dispersant, a thickener and a defoamer into a reaction kettle, dispersing for 10-20min at the speed of 500-900rmp, and fully and uniformly stirring;
adding pigment, feldspar powder, mica powder and aqueous epoxy emulsion into the reaction kettle in the first step, dispersing for 10-30min at the speed of 1200-1400rmp, and sanding all materials to the fineness of below 50 mu m;
and thirdly, transferring the materials in the reaction kettle in the second step into a paint mixing cylinder, adding a film forming agent, a flash rust inhibitor, a substrate wetting agent and an adhesion promoter, dispersing at a speed of 1200-1400rmp for 10-20min, mixing with deionized water, and filtering with a 100-mesh filter screen to obtain the heavy metal-free water-based epoxy primer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311751970.0A CN117820930A (en) | 2023-12-19 | 2023-12-19 | Heavy metal-free waterborne epoxy primer and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311751970.0A CN117820930A (en) | 2023-12-19 | 2023-12-19 | Heavy metal-free waterborne epoxy primer and preparation method thereof |
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| Publication Number | Publication Date |
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| CN117820930A true CN117820930A (en) | 2024-04-05 |
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| CN202311751970.0A Pending CN117820930A (en) | 2023-12-19 | 2023-12-19 | Heavy metal-free waterborne epoxy primer and preparation method thereof |
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| Country | Link |
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| CN (1) | CN117820930A (en) |
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