CN111621177A - Low-VOC cold zinc spraying coating and preparation method thereof - Google Patents
Low-VOC cold zinc spraying coating and preparation method thereof Download PDFInfo
- Publication number
- CN111621177A CN111621177A CN202010528844.9A CN202010528844A CN111621177A CN 111621177 A CN111621177 A CN 111621177A CN 202010528844 A CN202010528844 A CN 202010528844A CN 111621177 A CN111621177 A CN 111621177A
- Authority
- CN
- China
- Prior art keywords
- parts
- ingredient
- zinc coating
- epoxy resin
- cold spray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to the field of heavy-duty anticorrosive coatings, in particular to a low-VOC cold zinc spraying coating and a preparation method thereof. The cold spray zinc coating comprises a first ingredient and a second ingredient, wherein the first ingredient comprises 2-4 parts of modified epoxy resin, 1-2 parts of binder, 1-2 parts of reactive diluent, 0.05-0.2 part of rheological additive, 100-200 parts of zinc powder and 10-20 parts of composite environment-friendly solvent. And the second ingredient comprises 1-2 parts of epoxy curing agent. The preparation method comprises the following steps: dissolving a binder in a composite environment-friendly solvent, adding modified epoxy resin, an active diluent, a rheological aid and zinc powder at the rotating speed of 600-; and uniformly mixing the first ingredient and the second ingredient to obtain the cold spray zinc coating. The cold spray zinc coating has the advantages that the volume solid content is over 60 percent, the VOC content is low, and the adhesive force is strong through adding the modified epoxy resin.
Description
Technical Field
The invention relates to the field of heavy-duty anticorrosive coatings, in particular to a low-VOC cold zinc spraying coating and a preparation method thereof.
Background
The traditional anticorrosive paint mainly adopts the barrier protection principle, the service life is generally different from 2 to 8 years, and a great amount of anticorrosive renovation projects exist every year. The cost of corrosion prevention after multiple investment is more than that of steel, and the cost is not fresh. In the field of heavy corrosion resistance, more and more manufacturers begin to adopt cathode protection materials (hot galvanizing, hot zinc spraying, zinc-rich coating, external anode and the like) for composite protection, and in most occasions, the cathode protection materials have better corrosion resistance. Hot galvanizing is an effective metal corrosion prevention mode, but the construction difficulty is high, and the defects of high energy consumption, high pollution and the like are brought, and the hot galvanizing is gradually replaced by cold spraying. Then, the volume solid content of cold spray zinc in the current market is lower by about 30-50%, the VOC content is high, and the requirements of environmental protection are not met.
Disclosure of Invention
Technical problem to be solved
In view of the defects and shortcomings of the prior art, the invention provides the cold spray zinc coating with low VOC content and high volume solid content, and can realize one-time thick coating;
correspondingly, the invention also provides a preparation method of the cold spray zinc coating.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
the low-VOC cold zinc spraying coating comprises a first ingredient and a second ingredient, wherein the first ingredient comprises the following components in parts by weight: 2-4 parts of modified epoxy resin, 1-2 parts of binder, 1-2 parts of active diluent, 0.05-0.2 part of rheological additive, 100-200 parts of zinc powder and 10-20 parts of composite environment-friendly solvent;
the ingredient II comprises the following components in parts by weight: 1-2 parts of epoxy curing agent.
Further, the ingredient I comprises the following components in parts by weight: 3 parts of modified epoxy resin, 1.5 parts of binder, 1.5 parts of active diluent, 0.15 part of rheological additive, 150 parts of zinc powder and 15 parts of composite environment-friendly solvent;
and 1.5 parts of epoxy curing agent in the second ingredient.
Further, the modified epoxy resin is formed by modifying bisphenol A and bisphenol F epoxy resin through organic silicon; the solid content of the modified epoxy resin is 100 percent, the viscosity is 500-1500cps/25 ℃, and the epoxy equivalent is 100-200 g/equiv.
Further, the binder is MMA/BMA copolymer.
Further, the reactive diluent is an epoxy reactive diluent, preferably one or a combination of more than two of C12-C14 fatty glycidyl ether, butyl glycidyl ether and polypropylene glycol diglycidyl ether.
Furthermore, the rheological additive is one or the combination of more than two of fumed silica, bentonite, modified urea solvent and wax powder.
Further, the composite environment-friendly solvent comprises butanol, xylene and benzyl alcohol in a weight ratio of 40-80: 10-40: 5-10.
Furthermore, the epoxy curing agent is one or the combination of more than two of a modified alicyclic amine curing agent, a modified polyamide curing agent and a cardanol modified amine curing agent.
The invention also provides a preparation method of the low VOC cold spray zinc coating, which comprises the following steps:
s1 preparation of ingredient one: dissolving a binder in a composite environment-friendly solvent, dispersing at the rotating speed of 600-;
s2, uniformly mixing the obtained first ingredient and the second ingredient to obtain the low-VOC cold spray zinc coating.
The invention also provides application of the low-VOC cold spray zinc coating in a metal base material, wherein the obtained first ingredient and the second ingredient are uniformly mixed, filtered by a 100-mesh and 200-mesh filter screen and then directly sprayed on the metal base material.
(III) advantageous effects
1. According to the invention, the volume solid content of the cold spray zinc coating is more than 60% by adding the modified epoxy resin, and the cold spray zinc coating is diluted and dissolved by the interaction among the active diluent, the composite environment-friendly solvent and the modified epoxy resin, so that the zinc powder is better wetted, the use of VOC components is reduced, and the zinc powder has stronger adhesive force by the modified epoxy resin and the binder.
2. The invention is a bi-component coating, the epoxy curing agent is used as a second ingredient, and when the coating is used, the epoxy curing agent realizes the curing of a mixture prepared by modified epoxy resin, a binder, an active diluent, a rheological additive and zinc powder, so that the coating has higher crosslinking density, better adhesive force and salt spray resistance and higher solid content.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention by way of specific embodiments thereof.
The metal substrate treatment in the following examples and examples was carried out as per the requirements of HG _ T4845-2015 cold-applied zinc paint (all coated surfaces were cleaned, dried and free of contamination, sand-blasted to Sa21/2 grade before painting, surface roughness 40-75 μm, oil stains on the surface, weld spatter and grind weld and sharp corners before rust removal).
[ first embodiment ] to provide a toner
The low-VOC cold zinc spraying coating comprises a first ingredient and a second ingredient, wherein the first ingredient comprises the following components in parts by weight: 2-4 parts of modified epoxy resin, 1-2 parts of binder, 1-2 parts of active diluent, 0.05-0.2 part of rheological additive, 100-200 parts of zinc powder and 10-20 parts of composite environment-friendly solvent;
the ingredient II comprises the following components in parts by weight: 1-2 parts of epoxy curing agent.
The key point in this embodiment is the modified epoxy resin in the first ingredient, the reactive diluent, and the modified curing agent in the second ingredient. The modified epoxy resin is added into the cold spray zinc coating to reduce the VOC content in the cold spray zinc coating, improve the volume solid content to be more than 60%, have no influence on the adhesive force, and have higher adhesive force and salt spray resistance, thereby realizing one-time thick coating, obviously improving the working efficiency and obviously reducing the labor cost required by repeated spraying; the cold spray zinc coating obtained by mixing the first ingredient and the second ingredient has lower VOC content due to higher volume solid content, the content of other substances is reduced, and the addition of VOC is reduced.
Preferably, the ingredient I comprises the following components in parts by weight: 3 parts of modified epoxy resin, 1.5 parts of binder, 1.5 parts of active diluent, 0.15 part of rheological additive, 150 parts of zinc powder and 15 parts of composite environment-friendly solvent;
and 1.5 parts of epoxy curing agent in the second ingredient.
In order to improve the interaction between the modified epoxy resin and other components and improve the adhesive force of the cold spray zinc coating, the modified epoxy resin is preferably bisphenol A and bisphenol F epoxy resin which are modified by organic silicon; the solid content of the modified epoxy resin is 100 percent, the viscosity is 500-1500cps/25 ℃, and the epoxy equivalent is 100-200 g/equiv.
Further, the binder is MMA/BMA copolymer. MMA is methyl methacrylate, BMA is butyl methacrylate, and the BMA is thermoplastic bonding resin, so that better base material adhesion is provided for the coating, and the adhesion of the coating is further improved.
Further, the reactive diluent is an epoxy reactive diluent, preferably one or a combination of more than two of C12-C14 fatty glycidyl ether, butyl glycidyl ether and polypropylene glycol diglycidyl ether. The epoxy reactive diluent can react with a curing agent to form a film, so that the VOC is further reduced while the flexibility is improved.
Furthermore, the rheological additive is one or the combination of more than two of fumed silica, bentonite, modified urea solvent and wax powder.
Further, the composite environment-friendly solvent comprises butanol, xylene and benzyl alcohol in a weight ratio of 40-80: 10-40: 5-10.
Furthermore, the epoxy curing agent is one or the combination of more than two of a modified alicyclic amine curing agent, a modified polyamide curing agent and a cardanol modified amine curing agent.
The modified epoxy resin is formed by modifying low-molecular bisphenol A epoxy resin, low-molecular bisphenol F epoxy resin and low-molecular polysiloxane, and provides a wetting agent with good flexibility, substrate wettability and zinc powder for the coating, so that a higher pigment ratio can be achieved. The epoxy curing agent is a second ingredient, is a single component, has low viscosity, and has the characteristics of higher glass transition temperature and higher bonding strength after being mixed with the modified epoxy resin, thereby achieving the characteristics of higher adhesive force, higher salt spray performance and the like.
[ second embodiment ] to provide a medicine for treating diabetes
The embodiment provides a preparation method of a low-VOC cold-spraying zinc coating, which comprises the following steps:
s1 preparation of ingredient one: dissolving a binder in a composite environment-friendly solvent, dispersing at the rotating speed of 200-mesh-type 600r/min, adding corresponding parts by weight of modified epoxy resin, an active diluent, a rheological aid and zinc powder, increasing the rotating speed to 600-mesh-type 1200r/min, uniformly dispersing, and filtering by using a 100-mesh-type 200-mesh filter screen to obtain a first ingredient;
s2, uniformly mixing the obtained first ingredient and the second ingredient, and filtering the mixture through a 100-mesh and 200-mesh filter screen to obtain the low-VOC cold spray zinc coating.
Only the cold spray zinc coating obtained by the method indexes of the embodiment has stronger bonding strength, higher adhesive force and higher salt fog property.
[ third embodiment ]
The present embodiment provides a use of the low VOC cold spray zinc coating obtained in the first and second embodiments in a metal substrate,
when in use, the obtained first ingredient and the second ingredient are mixed uniformly, filtered by a 100-mesh and 200-mesh filter screen and then directly sprayed on the treated metal base material.
In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below. While the following shows exemplary embodiments of the invention, it should be understood that the invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Example 1
The low VOC cold spray zinc coating comprises a first ingredient and a second ingredient,
the first ingredient is prepared from the following components in parts by weight: 4 parts of modified epoxy resin, 1 part of MMA/BMA copolymer, 2 parts of active diluent (which is formed by mixing butyl glycidyl ether and polypropylene glycol diglycidyl ether according to the volume ratio of 1: 1), 0.05 part of modified urea solvent (which is formed by mixing fumed silica and bentonite according to the weight ratio of 2: 1), 200 parts of zinc powder and 10 parts of composite environment-friendly solvent (which is formed by mixing butanol, xylene and benzyl alcohol according to the weight ratio of 80: 10); the ingredient II comprises the following components in parts by weight: 1 part of epoxy curing agent (prepared by mixing modified alicyclic amine curing agent and modified polyamide curing agent according to the weight ratio of 2: 3).
Dissolving an MMA/BMA copolymer in a composite environment-friendly solvent, dispersing at the rotating speed of 600r/min, adding corresponding parts by weight of modified epoxy resin, an active diluent, a modified urea solvent and zinc powder, and increasing the rotating speed to 600r/min to uniformly disperse to obtain a first ingredient;
when in use, the obtained first ingredient and the second ingredient are uniformly mixed and then filtered by a 200-mesh filter screen to obtain the low-VOC cold spray zinc coating which is directly sprayed on the treated metal base material.
Wherein, the modified epoxy resin is formed by modifying bisphenol A and bisphenol F epoxy resin by organic silicon; the solid content of the modified epoxy resin is 100 percent, the viscosity is 500-1500cps/25 ℃, and the epoxy equivalent is 100-200 g/equiv.
Example 2
The low VOC cold spray zinc coating comprises a first ingredient and a second ingredient,
the first ingredient is prepared from the following components in parts by weight: 2.5 parts of modified epoxy resin, 2 parts of MMA/BMA copolymer, 1 part of butyl glycidyl ether, 0.08 part of fumed silica, 120 parts of zinc powder and 12 parts of composite environment-friendly solvent (mixture of butanol, xylene and benzyl alcohol according to the weight ratio of 50: 30: 7); the ingredient II comprises the following components in parts by weight: 1.5 parts of cardanol modified amine curing agent.
Dissolving an MMA/BMA copolymer in a composite environment-friendly solvent, dispersing at the rotating speed of 500r/min, adding corresponding parts by weight of modified epoxy resin, butyl glycidyl ether, fumed silica and zinc powder, and increasing the rotating speed to 800r/min to uniformly disperse to obtain a first ingredient;
when the coating is used, the obtained first ingredient and the cardanol modified amine curing agent in the corresponding weight part in the second ingredient are uniformly mixed and filtered by a 150-mesh filter screen to obtain the low-VOC cold spray zinc coating, and the low-VOC cold spray zinc coating is directly sprayed on a treated metal base material.
Wherein, the modified epoxy resin is formed by modifying bisphenol A and bisphenol F epoxy resin by organic silicon; the solid content of the modified epoxy resin is 100 percent, the viscosity is 500-1500cps/25 ℃, and the epoxy equivalent is 100-200 g/equiv.
Example 3
The low VOC cold spray zinc coating comprises a first ingredient and a second ingredient,
the first ingredient is prepared from the following components in parts by weight: 2 parts of modified epoxy resin, 2 parts of MMA/BMA copolymer, 1 part of reactive diluent (which is formed by mixing aliphatic glycidyl ether, butyl glycidyl ether and polypropylene glycol diglycidyl ether according to the volume ratio of 1: 2: 5), 0.2 part of rheological additive (which is formed by mixing fumed silica, bentonite, a modified urea solvent and wax powder according to the volume ratio of 4: 1: 5: 3), 100 parts of zinc powder and 20 parts of composite environment-friendly solvent (which is formed by mixing butanol, xylene and benzyl alcohol according to the weight ratio of 40: 5); the ingredient II comprises the following components in parts by weight: 2 parts of epoxy curing agent (which is formed by mixing modified alicyclic amine curing agent, modified polyamide curing agent and cardanol modified amine curing agent according to the weight ratio of 3: 2: 6).
Dissolving an MMA/BMA copolymer in a composite environment-friendly solvent, dispersing at the rotating speed of 200r/min, adding corresponding parts by weight of modified epoxy resin, an active diluent, a rheological aid and zinc powder, increasing the rotating speed to 1200r/min, and uniformly dispersing to obtain a first ingredient;
when in use, the obtained first ingredient and the second ingredient are uniformly mixed and then filtered by a 100-mesh filter screen to obtain the low VOC cold spray zinc coating which is directly sprayed on the treated metal base material.
Wherein, the modified epoxy resin is formed by modifying bisphenol A and bisphenol F epoxy resin by organic silicon; the solid content of the modified epoxy resin is 100 percent, the viscosity is 500-1500cps/25 ℃, and the epoxy equivalent is 100-200 g/equiv.
Example 4
The low VOC cold spray zinc coating comprises a first ingredient and a second ingredient,
the first ingredient is prepared from the following components in parts by weight: 3 parts of modified epoxy resin, 1 part of MMA/BMA copolymer, 2 parts of polypropylene glycol diglycidyl ether, 0.1 part of rheological additive (which is formed by mixing fumed silica, modified urea solvent and wax powder according to the weight ratio of 1: 1), 100 parts of zinc powder and 20 parts of composite environment-friendly solvent (which is formed by mixing butanol, xylene and benzyl alcohol according to the weight ratio of 50: 10); the ingredient II comprises the following components in parts by weight: 1.5 parts of modified polyamide curing agent (modified alicyclic amine curing agent, modified polyamide curing agent and cardanol modified amine curing agent).
Dissolving an MMA/BMA copolymer in a composite environment-friendly solvent, dispersing at the rotating speed of 200r/min, adding corresponding parts by weight of modified epoxy resin, polypropylene glycol diglycidyl ether, a rheological aid and zinc powder, and increasing the rotating speed to 1200r/min to uniformly disperse to obtain a first ingredient;
when in use, the obtained first ingredient and the modified polyamide curing agent in the second ingredient in corresponding weight parts are uniformly mixed and filtered by a 150-mesh filter screen to obtain the low-VOC cold zinc spraying coating, and the low-VOC cold zinc spraying coating is directly sprayed on a treated metal base material.
Wherein, the modified epoxy resin is formed by modifying bisphenol A and bisphenol F epoxy resin by organic silicon; the solid content of the modified epoxy resin is 100 percent, the viscosity is 500-1500cps/25 ℃, and the epoxy equivalent is 100-200 g/equiv.
Experiments show that: the low-VOC cold-spray zinc coating obtained in the embodiments 1-4 of the invention has higher volume solid content, high dry film zinc content, higher adhesive force and salt fog resistance, wherein the embodiment 1 of the invention has the highest adhesive force and salt fog resistance, the volume solid content of the embodiment 2 is higher than that of the embodiment 1, and the volume solid content of the embodiment 1 is higher than that of the embodiment 3.
The cold spray zinc coating obtained in example 1 was compared with a commercially available cold spray zinc coating to obtain data as shown in table 1.
TABLE 1
From the data in table 1: all the performances of the embodiment 1 of the invention are obviously higher than the technical indexes, particularly the VOC content is one half of that of the conventional cold spray zinc, and the cold spray zinc obtained by combining the components in the embodiment 1 of the invention through the preparation method has high performances, particularly high adhesive force, high salt mist resistance and the like.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The low-VOC cold-spray zinc coating is characterized by comprising a first ingredient and a second ingredient, wherein the first ingredient comprises the following components in parts by weight: 2-4 parts of modified epoxy resin, 1-2 parts of binder, 1-2 parts of active diluent, 0.05-0.2 part of rheological additive, 100-200 parts of zinc powder and 10-20 parts of composite environment-friendly solvent;
the ingredient II comprises the following components in parts by weight: 1-2 parts of epoxy curing agent.
2. The low VOC cold spray zinc coating of claim 1 wherein ingredient one comprises the following components in parts by weight: 3 parts of modified epoxy resin, 1.5 parts of binder, 1.5 parts of active diluent, 0.15 part of rheological additive, 150 parts of zinc powder and 15 parts of composite environment-friendly solvent;
the ingredient II comprises the following components in parts by weight: 1-2 parts of epoxy curing agent.
3. The low VOC cold spray zinc coating of claim 1 or 2, wherein: the modified epoxy resin is formed by modifying bisphenol A and bisphenol F epoxy resin through organic silicon; the solid content of the modified epoxy resin is 100 percent, the viscosity is 500-1500cps/25 ℃, and the epoxy equivalent is 100-200 g/equiv.
4. The low VOC cold spray zinc coating of claim 1 or 2, wherein: the binder is a MMA/BMA copolymer.
5. The low VOC cold spray zinc coating of claim 1 or 2, wherein: the reactive diluent is an epoxy reactive diluent, and is preferably one or a combination of more than two of C12-C14 fatty glycidyl ether, butyl glycidyl ether and polypropylene glycol diglycidyl ether.
6. The low VOC cold spray zinc coating of claim 1 or 2, wherein: the rheological additive is one or the combination of more than two of fumed silica, bentonite, modified urea solvent and wax powder.
7. The low VOC cold spray zinc coating of claim 1 or claim 2, wherein the environment-friendly composite solvent comprises butanol, xylene and benzyl alcohol in a weight ratio of 40-80: 10-40: 5-10.
8. The low VOC cold spray zinc coating of claim 1 or 2, wherein: the epoxy curing agent is one or the combination of more than two of a modified alicyclic amine curing agent, a modified polyamide curing agent and a cardanol modified amine curing agent.
9. The method of preparing a low VOC cold spray zinc coating according to claim 1 or 2, comprising the steps of:
s1 preparation of ingredient one: dissolving a binder in a composite environment-friendly solvent, dispersing at the rotating speed of 600-;
s2, uniformly mixing the obtained first ingredient and the second ingredient to obtain the low-VOC cold-sprayed zinc coating.
10. Use of a low VOC cold spray zinc coating according to claim 1 or 2 on a metal substrate, wherein: and uniformly mixing the obtained first ingredient and the second ingredient, filtering the mixture by a 100-mesh and 200-mesh filter screen, and directly spraying the mixture on the metal base material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010528844.9A CN111621177A (en) | 2020-06-11 | 2020-06-11 | Low-VOC cold zinc spraying coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010528844.9A CN111621177A (en) | 2020-06-11 | 2020-06-11 | Low-VOC cold zinc spraying coating and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111621177A true CN111621177A (en) | 2020-09-04 |
Family
ID=72257349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010528844.9A Pending CN111621177A (en) | 2020-06-11 | 2020-06-11 | Low-VOC cold zinc spraying coating and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111621177A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116285570A (en) * | 2023-02-22 | 2023-06-23 | 沈阳工业大学 | Epoxy resin modified cold zinc spraying coating and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381334A (en) * | 1976-11-10 | 1983-04-26 | Pratt & Lambert, Inc. | Zinc-rich powders |
| CN102559002A (en) * | 2010-12-10 | 2012-07-11 | 深圳市嘉达高科产业发展有限公司 | High-zinc-content mono-component epoxy anti-corrosive paint |
| CN102618132A (en) * | 2012-03-19 | 2012-08-01 | 天长市巨龙车船涂料有限公司 | Primer-topcoat cold-spray zinc coating and preparation method for same |
| CN104031528A (en) * | 2014-06-25 | 2014-09-10 | 上海涂料有限公司技术中心 | Solvent-free organic silicon modified epoxy anti-corrosive coating material and preparation method thereof |
| CN104140735A (en) * | 2014-03-23 | 2014-11-12 | 成都拜迪新材料有限公司 | High-specific-weight high-zinc-content heavy-duty epoxy zinc-rich primer and preparation method thereof |
| CN104804609A (en) * | 2014-01-27 | 2015-07-29 | 福建百花化学股份有限公司 | Two-component high zinc epoxy priming paint and preparation method thereof |
| CN110144160A (en) * | 2019-05-21 | 2019-08-20 | 江阴市大阪涂料有限公司 | A kind of high solid low surface treatment epoxy zinc rich primer and the preparation method and application thereof |
-
2020
- 2020-06-11 CN CN202010528844.9A patent/CN111621177A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381334A (en) * | 1976-11-10 | 1983-04-26 | Pratt & Lambert, Inc. | Zinc-rich powders |
| CN102559002A (en) * | 2010-12-10 | 2012-07-11 | 深圳市嘉达高科产业发展有限公司 | High-zinc-content mono-component epoxy anti-corrosive paint |
| CN102618132A (en) * | 2012-03-19 | 2012-08-01 | 天长市巨龙车船涂料有限公司 | Primer-topcoat cold-spray zinc coating and preparation method for same |
| CN104804609A (en) * | 2014-01-27 | 2015-07-29 | 福建百花化学股份有限公司 | Two-component high zinc epoxy priming paint and preparation method thereof |
| CN104140735A (en) * | 2014-03-23 | 2014-11-12 | 成都拜迪新材料有限公司 | High-specific-weight high-zinc-content heavy-duty epoxy zinc-rich primer and preparation method thereof |
| CN104031528A (en) * | 2014-06-25 | 2014-09-10 | 上海涂料有限公司技术中心 | Solvent-free organic silicon modified epoxy anti-corrosive coating material and preparation method thereof |
| CN110144160A (en) * | 2019-05-21 | 2019-08-20 | 江阴市大阪涂料有限公司 | A kind of high solid low surface treatment epoxy zinc rich primer and the preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116285570A (en) * | 2023-02-22 | 2023-06-23 | 沈阳工业大学 | Epoxy resin modified cold zinc spraying coating and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105860748A (en) | Solvent-free epoxy anticorrosive coating and preparation method thereof | |
| CN101560351B (en) | Corrosion proof impregnating varnish used for water-based metal components and manufacturing method thereof | |
| CN106010020A (en) | Two-component aqueous acrylate-epoxy resin hybrid coating | |
| CN109880484B (en) | Water-based epoxy thick paste anticorrosive paint and preparation method and application thereof | |
| CN105885644B (en) | A kind of antirusting paint and preparation method thereof | |
| CN106905816B (en) | Super-hydrophobic oleophobic coating and preparation method and use method thereof | |
| CN102702920B (en) | Aqueous polyaniline anti-corrosive paint and preparation method thereof | |
| CN103351787A (en) | High-performance rust inhibiting primer for low surface treatment of mechanical equipment and preparation method of high-performance rust inhibiting primer | |
| CN107903764A (en) | A kind of long-acting type water-thinned epoxy zinc-rich anti-corrosion primer and its coating process | |
| CN111621177A (en) | Low-VOC cold zinc spraying coating and preparation method thereof | |
| CN104725977B (en) | Double-component aqueous epoxy zinc rich primer of heavy antisepsis and preparation method thereof | |
| CN113045955A (en) | Low-surface-treatment heavy-duty anticorrosive paint and preparation method and application thereof | |
| CN109825169A (en) | One kind quick-drying zinc rich primer and its preparation method and application in anhydrous epoxy | |
| CN114106608A (en) | Low-VOC (volatile organic compound) water-based two-component epoxy zinc-rich coating and preparation method thereof | |
| CN105001727A (en) | Water-borne acrylic primer and preparation method thereof | |
| CN112375469A (en) | Solvent-free epoxy drinking water coating and preparation method thereof | |
| CN110643265A (en) | Water-based epoxy coating capable of being sprayed and dipped and preparation method thereof | |
| CN110746859A (en) | Water-based epoxy zinc-rich coating and preparation method thereof | |
| CN107083152A (en) | A kind of high solidification low viscosity hardware coating | |
| CN110628297A (en) | Solvent type epoxy coating with high solid content and salt fog resistance and preparation method thereof | |
| CN112680010A (en) | Quick-drying bi-component water-based epoxy anticorrosive paint and preparation method thereof | |
| CN109486308A (en) | A kind of stainless steel water varnish and preparation method and application | |
| CN108017967A (en) | A kind of versatility is wide, the electrophoresis ground of strong applicability decoration protective coating and preparation method thereof | |
| CN114181588A (en) | Water-based epoxy zinc-rich primer and preparation method thereof | |
| CN113042342A (en) | Low-energy-consumption steel plate color coating process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200904 |
|
| RJ01 | Rejection of invention patent application after publication |