CN115260875A - Primer with gridding conductive characteristic anode protection effect and preparation and use methods thereof - Google Patents
Primer with gridding conductive characteristic anode protection effect and preparation and use methods thereof Download PDFInfo
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- CN115260875A CN115260875A CN202211067484.2A CN202211067484A CN115260875A CN 115260875 A CN115260875 A CN 115260875A CN 202211067484 A CN202211067484 A CN 202211067484A CN 115260875 A CN115260875 A CN 115260875A
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- gridding
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- 230000000694 effects Effects 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 31
- 238000000576 coating method Methods 0.000 claims abstract description 31
- 239000002270 dispersing agent Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000003085 diluting agent Substances 0.000 claims abstract description 17
- 239000000835 fiber Substances 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 239000002904 solvent Substances 0.000 claims abstract description 15
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 13
- -1 assistant Substances 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 24
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 23
- 239000004917 carbon fiber Substances 0.000 claims description 23
- 239000012752 auxiliary agent Substances 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 15
- 239000003973 paint Substances 0.000 claims description 13
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical group CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 12
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 239000011268 mixed slurry Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 7
- 239000003153 chemical reaction reagent Substances 0.000 claims description 6
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 5
- 229920005749 polyurethane resin Polymers 0.000 claims description 5
- 239000008096 xylene Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 3
- 239000011701 zinc Substances 0.000 abstract description 41
- 239000000843 powder Substances 0.000 abstract description 24
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 16
- 239000002002 slurry Substances 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 239000007888 film coating Substances 0.000 description 3
- 238000009501 film coating Methods 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical compound C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- 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
- C09D5/002—Priming paints
-
- 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
- C09D7/40—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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
Abstract
The invention discloses a primer with a gridding conductive characteristic anode protection effect and a preparation method and a using method thereof, wherein the primer comprises the following components in percentage by mass: the coating comprises, by mass, 30-50% of zinc powder, 15-30% of conductive fiber, 10-20% of diluent, and the balance of coating; the coating adopts a conventional coating and comprises the following components: base material, dispersant, assistant, solvent and curing agent. The invention can solve the problem of low Zn powder sacrificial anode protection efficiency in the primer in the existing anticorrosive coating system.
Description
Technical Field
The invention belongs to the field of corrosion protection, and particularly relates to a primer with a gridding conductive characteristic anode protection effect and a preparation method and a use method thereof.
Background
The Zn-rich primer has good corrosion resistance and is widely applied to the field of corrosion prevention, and is generally used as a primer for a corrosion-resistant paint film coating. Because Zn is more active than Fe, it is easy to lose electrons, and it can be combined with metal component to form primary cell to attain the protection action of sacrificial anode. In addition, based on a thermal expansion calculation formula, after Zn is added into the high-molecular paint film coating, the thermal expansion coefficient of the coating can be effectively improved and is closer to a metal matrix, so that the internal stress of the paint film layer can be reduced.
Currently, zn in commercial Zn-rich primers is mainly scattered in the coating interior in the form of particles. Although the Zn particles themselves have the function of protecting the metal member from the sacrificial anode, the particles scattered inside the paint film have poor contact with each other. When a certain area on the surface of the metal component is corroded, zn particles with poor contact property determine that the Zn particles can not form an effective loop with a matrix, and a galvanic cell is difficult to form between the Zn particles and the metal component, so that the Zn particles can not achieve the expected sacrificial anode protection effect. At present, the conventional method for improving the sacrificial anode effect of Zn particles is to increase the content of Zn powder, for example, the inner wall of the storage tank has been increased to 85%, but too many Zn particles will reduce the adhesion of the primer, and further cause the primer layer to fall off. Therefore, the Zn particle sacrificial anode needs to be significantly improved by connecting Zn particles in other ways while not increasing or even decreasing the content of Zn particles to form an effective loop.
Disclosure of Invention
Aiming at the problems of the existing Zn-rich primer material, the invention provides a primer with a gridding conductive characteristic anode protection effect and a preparation and use method thereof, and the invention can solve the problem of low Zn powder sacrificial anode protection efficiency in the primer in the existing anticorrosive coating system.
The above object of the present invention is achieved by the following technical means:
a priming paint with the anode protection function of gridding conductive characteristics comprises, by mass, 30% -50% of zinc powder, 15% -30% of conductive fibers, 10% -20% of a diluent, and the balance of a coating;
the components of the coating comprise: base material, dispersant, assistant, solvent and curing agent.
Preferably, the conductive fiber is carbon fiber.
Preferably, the carbon fiber is nano carbon fiber and/or submicron carbon fiber.
Preferably, the diameter of the conductive fiber is 500nm-1000nm, the length of the conductive fiber is 15 μm-40 μm, and the particle size of the zinc powder is 1-10 μm.
Preferably, the diluent is butanol or xylene.
Preferably, the coating comprises the following components in parts by mass: 49-63 parts of base material, 3-5 parts of dispersing agent, 2-3 parts of auxiliary agent, 2-3 parts of solvent and 7-9 parts of curing agent.
Preferably, the base material is epoxy resin or polyurethane resin, the dispersing agent is acrylate, the auxiliary agent is a mixture formed by mixing tetraethoxysilane, titanium oxide, aluminum oxide and silicon oxide according to a mass ratio of 1.
The preparation method of the primer with the gridding conductive characteristic anode protection effect comprises the following steps:
uniformly stirring the base material, zinc powder, conductive fibers, an auxiliary agent, a dispersing agent and a solvent to obtain mixed slurry A;
adding a curing agent into the mixed slurry A while stirring, and stirring until all reagents are completely and uniformly dispersed to obtain mixed slurry B;
and adding a diluent into the mixed slurry B while stirring, adjusting to construction viscosity, standing and curing to obtain the primer with the gridding conductive characteristic anode protection effect.
Preferably, the time for standing and curing is 0.5-1 hour.
The application method of the primer with the gridding conductive feature anode protection function comprises the following steps:
and coating the primer with the gridding conductive characteristic anode protection effect on the surface of the workpiece to be coated, forming a coating on the surface of the workpiece to be coated, standing until the coating is dried.
The invention has the following beneficial effects:
according to the invention, on the basis of the traditional Zn-rich primer, the conductive fiber is added, so that the Zn powder content is reduced. The fine conductive fibers enable Zn powder and metal components to form a sacrificial anode protection loop which is continuously conducted. Even if the Zn powder in a certain region is consumed completely, the communicated loop can still take the Zn powder in other regions as the anode to continue to protect the region, so that after the conductive fiber is added, the sacrificial anode effect of the Zn powder can be continuously and efficiently exerted, and the short-range and long-range dual sacrificial anode protection effect of the Zn powder can be realized. The protection effect of the Zn powder sacrificial anode can be greatly improved, and the corrosion resistance effect of a paint film is improved; and the Zn powder content in the traditional Zn-rich primer can be reduced, so that the cost is reduced. Meanwhile, the compatibility problem of the Zn powder and a base material (such as epoxy resin) can be improved by reducing the content of the Zn powder, and the probability of generating pores in a paint film coating in the construction process is reduced. The purposes of improving the corrosion resistance of the primer and prolonging the service life of an anticorrosive coating system are achieved.
Detailed Description
The present invention is further described with reference to the following examples.
The primer with the gridding conductive characteristic anode protection function comprises zinc powder, conductive fibers, a diluent and a conventional coating, and specifically comprises, by mass, 30% -50% of the zinc powder, 15% -30% of the conductive fibers, 10% -20% of the diluent, and the balance of the coating; the conductive fiber is carbon fiber, the diameter of the carbon fiber adopted in the following embodiment of the invention is 500nm-1000nm, the length is 15 μm-40 μm, and the particle size of the zinc powder is 1-10 μm. The carbon fibers may be one or a mixture of nano carbon fibers and sub-micron carbon fibers. The diluent is butanol or xylene.
The coating comprises the following components in parts by mass: 49-63 parts of base material, 3-5 parts of dispersing agent, 2-3 parts of auxiliary agent, 2-3 parts of solvent and 7-9 parts of curing agent. The base material adopts epoxy resin or polyurethane resin, the dispersing agent adopts acrylic ester, the auxiliary agent adopts a mixture formed by mixing tetraethoxysilane, titanium oxide, aluminum oxide and silicon oxide according to the mass ratio of 1.
The preparation method of the primer with the gridding conductive characteristic anode protection effect comprises the following steps:
step 1: adding the base material, zn powder, carbon fiber, auxiliary agent, dispersant and solvent into a clean container according to the formula proportion, and stirring for 1-1.5 hours at the rotating speed of 100-200 rpm;
step 2: adding a curing agent into the slurry obtained in the step 1 while stirring, and stirring until all reagents are completely and uniformly dispersed;
and step 3: and (3) adding a diluent into the slurry obtained in the step (2) while stirring, adjusting the viscosity to the construction viscosity, standing for curing for 0.5-1 hour, and completing the preparation of the primer with the gridding conductive characteristic anode protection effect.
When the primer with the gridding conductive characteristic anode protection function is used, the primer slurry is uniformly sprayed, rolled or brushed on a metal workpiece to be coated to form a coating on the surface of the workpiece to be coated, and then the primer slurry is kept stand until the coating is dried. When in use, the dry film thickness of the primer layer is controlled to be 60-80 μm.
The invention mainly aims at harsh service environment with high corrosivity characteristic, and uses carbon fiber as a lead to effectively connect Zn powder to form an intercommunicated sacrificial anode protection Zn powder net, thereby realizing high-efficiency sacrificial anode protection of the Zn powder, and simultaneously, the gridded communicated Zn powder can also realize short-range and long-range dual sacrificial anode protection. In addition, the gridding design can effectively improve the sacrificial anode effect of the Zn powder, reduce the Zn powder content in the primer and improve the density of the primer layer. The acrylic ester dispersing agent is added into the base material, so that the distribution uniformity of the carbon fiber and the Zn powder can be improved, and the purpose of interconnecting internet gridding sacrificial anodes is achieved. Compared with the traditional Zn-rich primer, the primer material has the advantages of medium Zn content, certain carbon fiber and dispersing agent, can realize the preparation of the primer with high sacrificial anode protection effect, and achieves the purpose of prolonging the service life of the anticorrosive coating.
Example 1
The primer of the embodiment comprises the following components in percentage by mass: 30% of zinc powder, 15% of carbon fiber, 10% of butanol serving as a diluent and the balance of paint; the coating comprises the following components in parts by mass: 49 parts of base material epoxy resin, 3 parts of dispersant acrylate, 2 parts of auxiliary agent, 2 parts of solvent xylene and 7 parts of curing agent polyamide resin.
The preparation and application method of the primer of the embodiment comprises the following steps:
step 1: adding epoxy resin into a clean container, adding Zn powder, carbon fiber, a dispersing agent, an auxiliary agent and a solvent while stirring, and stirring at the rotating speed of 100rpm for 1.5 hours;
step 2: adding a curing agent into the slurry obtained in the step 1 while stirring, and stirring until all reagents are completely and uniformly dispersed;
and step 3: adding a diluent into the slurry obtained in the step 2, adjusting the viscosity to the construction viscosity, and standing for half an hour for curing;
and 4, step 4: and (4) spraying the slurry obtained in the step (3) on an iron plate.
And 5: and (4) standing and airing the test piece in the step 4 at room temperature, wherein the thickness of a dry film is 60 micrometers. The immersion results after the artificial preparation of the paint film layer with 2mm defects are shown in table 1.
Example 2
The primer of the embodiment comprises the following components in percentage by mass: 40% of zinc powder, 20% of carbon fiber, 15% of diluent butanol and the balance of coating; the coating comprises the following components in parts by mass: 55 parts of base material epoxy resin, 4 parts of dispersant acrylate, 2.5 parts of auxiliary agent, 2.5 parts of solvent xylene and 8 parts of curing agent polyamide resin.
The preparation and application method of the primer of the embodiment comprises the following steps:
step 1: adding epoxy resin into a clean container, adding Zn powder, carbon fiber, a dispersing agent, an auxiliary agent and a solvent while stirring, and stirring at the rotating speed of 200rpm for 1 hour;
and 2, step: adding the curing agent into the slurry obtained in the step 1 while stirring, and stirring until all reagents are completely and uniformly dispersed;
and step 3: adding a diluent into the slurry obtained in the step 2, adjusting the viscosity to the construction viscosity, and standing for half an hour for curing;
and 4, step 4: and (4) spraying the slurry obtained in the step (3) on an iron plate.
And 5: and (4) standing and airing the test piece in the step 4 at room temperature, wherein the thickness of the dry film is 70 mu m. The immersion results after the artificial preparation of the paint film layer with 2mm defects are shown in the table 2.
Example 3
The primer of the embodiment comprises the following components in percentage by mass: 50% of zinc powder, 30% of carbon fiber, 20% of butanol serving as a diluent and the balance of paint; the coating comprises the following components in parts by mass: 63 parts of base material polyurethane resin, 5 parts of dispersant acrylate, 3 parts of auxiliary agent, 3 parts of solvent tetrahydronaphthalene and 9 parts of curing agent isocyanate.
The preparation and application method of the primer of the embodiment comprises the following steps:
step 1: adding polyurethane resin into a clean container, adding Zn powder, carbon fiber, a dispersing agent, an auxiliary agent and a solvent while stirring, and stirring at the rotating speed of 150rpm for 1.5 hours;
step 2: adding a curing agent into the slurry obtained in the step 1 while stirring, and stirring until all reagents are completely and uniformly dispersed;
and 3, step 3: adding a diluent into the slurry obtained in the step 2, adjusting the viscosity to the construction viscosity, and standing for curing for 1 hour;
and 4, step 4: and (4) spraying the slurry obtained in the step (3) on an iron plate.
And 5: and (5) standing and airing the test piece obtained in the step (4) at room temperature, wherein the thickness of a dry film is 80 micrometers. The immersion results after the artificial preparation of the paint film layer with 2mm defects are shown in table 3.
TABLE 1
TABLE 2
TABLE 3
The above examples show that the process of the invention is simple and feasible, and the coating prepared according to the component proportion of the invention has the performances of high corrosion resistance, high sacrificial anode protection effect, low porosity and the like, and can meet the requirements of long service life and long overhaul period of the primer.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention. In addition to the above examples, the present invention may be variously embodied. All technical solutions formed by equivalent substitutions fall within the scope of the claimed invention.
Claims (10)
1. The primer with the gridding conductive characteristic anode protection function is characterized by comprising, by mass, 30% -50% of zinc powder, 15% -30% of conductive fibers, 10% -20% of a diluent, and the balance of a coating;
the components of the coating comprise: base material, dispersant, assistant, solvent and curing agent.
2. The primer with anodic protection of meshed conductive features of claim 1, wherein the conductive fibers are carbon fibers.
3. The primer with anodic protection of meshed conductive features of claim 2, wherein the carbon fibers are nano carbon fibers and/or sub-micron carbon fibers.
4. The primer with anodic protection of meshed conductive features of claim 1, wherein the conductive fibers have a diameter of 500nm to 1000nm and a length of 15 μm to 40 μm, and the zinc powder has a particle size of 1 to 10 μm.
5. The primer with anodic protection of meshed conductive features of claim 1, wherein the diluent is butanol or xylene.
6. The primer with the anodic protection effect on the gridded conductive features according to claim 1, wherein the paint comprises the following components in parts by mass: 49-63 parts of base material, 3-5 parts of dispersing agent, 2-3 parts of auxiliary agent, 2-3 parts of solvent and 7-9 parts of curing agent.
7. The primer with the anodic protection effect on the gridding conductive feature according to claim 6, wherein the base material is epoxy resin or polyurethane resin, the dispersing agent is acrylate, the auxiliary agent is a mixture of tetraethoxysilane, titanium oxide, aluminum oxide and silicon oxide which are mixed according to a mass ratio of 1.
8. The method for preparing the primer with the anodic protection effect on the gridded conductive features according to any one of claims 1 to 7, which is characterized by comprising the following steps of:
uniformly stirring the base material, zinc powder, conductive fibers, an auxiliary agent, a dispersing agent and a solvent to obtain mixed slurry A;
adding a curing agent into the mixed slurry A while stirring, and stirring until all reagents are completely and uniformly dispersed to obtain mixed slurry B;
and adding a diluent into the mixed slurry B while stirring, adjusting to construction viscosity, standing and curing to obtain the primer with the gridding conductive characteristic anode protection effect.
9. The method for preparing a primer with anodic protection of meshed conductive features according to claim 8, wherein the standing and curing time is 0.5-1 hour.
10. The use of a primer with anodic protection of meshed conductive features according to any one of claims 1 to 7, comprising the following steps:
and coating the primer with the gridding conductive characteristic anode protection effect on the surface of the workpiece to be coated to form a coating on the surface of the workpiece to be coated, and then standing until the coating is dried.
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| CN202211067484.2A CN115260875A (en) | 2022-09-01 | 2022-09-01 | Primer with gridding conductive characteristic anode protection effect and preparation and use methods thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9215502D0 (en) * | 1992-07-21 | 1992-09-02 | Ici Plc | Cathodic protection system and a coating and coating composition therefor |
| US6019833A (en) * | 1990-10-22 | 2000-02-01 | Ppg Industries Ohio, Inc. | Light colored conductive coating and method and composition for application thereof |
| CN108384427A (en) * | 2018-02-08 | 2018-08-10 | 湖州科博信息科技有限公司 | A kind of zinc-rich anticorrosion polyurethane coating |
| CN111073463A (en) * | 2019-12-23 | 2020-04-28 | 南京航空航天大学 | Low-zinc heavy-duty anticorrosive paint and preparation method thereof |
| CN114621654A (en) * | 2022-03-29 | 2022-06-14 | 北京碧海云智新材料技术有限公司 | Water-based epoxy zinc-rich primer and preparation method and application thereof |
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2022
- 2022-09-01 CN CN202211067484.2A patent/CN115260875A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6019833A (en) * | 1990-10-22 | 2000-02-01 | Ppg Industries Ohio, Inc. | Light colored conductive coating and method and composition for application thereof |
| GB9215502D0 (en) * | 1992-07-21 | 1992-09-02 | Ici Plc | Cathodic protection system and a coating and coating composition therefor |
| CN108384427A (en) * | 2018-02-08 | 2018-08-10 | 湖州科博信息科技有限公司 | A kind of zinc-rich anticorrosion polyurethane coating |
| CN111073463A (en) * | 2019-12-23 | 2020-04-28 | 南京航空航天大学 | Low-zinc heavy-duty anticorrosive paint and preparation method thereof |
| CN114621654A (en) * | 2022-03-29 | 2022-06-14 | 北京碧海云智新材料技术有限公司 | Water-based epoxy zinc-rich primer and preparation method and application thereof |
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Application publication date: 20221101 |