CN114854284A - Coating, preparation method thereof and photovoltaic module - Google Patents
Coating, preparation method thereof and photovoltaic module Download PDFInfo
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- CN114854284A CN114854284A CN202210602465.9A CN202210602465A CN114854284A CN 114854284 A CN114854284 A CN 114854284A CN 202210602465 A CN202210602465 A CN 202210602465A CN 114854284 A CN114854284 A CN 114854284A
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- 238000000576 coating method Methods 0.000 title claims abstract description 51
- 239000011248 coating agent Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 125
- 239000002904 solvent Substances 0.000 claims abstract description 74
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 59
- 239000003973 paint Substances 0.000 claims abstract description 39
- 239000003822 epoxy resin Substances 0.000 claims abstract description 34
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 34
- 229920003180 amino resin Polymers 0.000 claims abstract description 33
- 229920001225 polyester resin Polymers 0.000 claims abstract description 33
- 239000004645 polyester resin Substances 0.000 claims abstract description 33
- 239000000945 filler Substances 0.000 claims abstract description 28
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 20
- 238000003756 stirring Methods 0.000 claims description 73
- 238000007665 sagging Methods 0.000 claims description 44
- 239000002518 antifoaming agent Substances 0.000 claims description 42
- 239000002270 dispersing agent Substances 0.000 claims description 42
- 239000000049 pigment Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 22
- 239000002245 particle Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 239000006224 matting agent Substances 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 2
- 239000002671 adjuvant Substances 0.000 claims 4
- 239000013530 defoamer Substances 0.000 claims 2
- 239000000654 additive Substances 0.000 claims 1
- 230000000996 additive effect Effects 0.000 claims 1
- 239000004593 Epoxy Substances 0.000 abstract description 15
- 239000011701 zinc Substances 0.000 abstract description 13
- 229910052725 zinc Inorganic materials 0.000 abstract description 13
- 230000004224 protection Effects 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 description 39
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000008096 xylene Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000006750 UV protection Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- -1 aluminum silver Chemical group 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
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- 239000007921 spray Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000003653 coastal water Substances 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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- 239000013535 sea water Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Images
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
- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/049—Protective back sheets
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention discloses a coating, a preparation method thereof and a photovoltaic module, which comprise a first primer component, a second primer component and a finish component in parts by weight; the first primer component comprises epoxy resin, a filler, graphene, a first solvent and a first auxiliary agent; the second primer component comprises a curing agent and a second solvent; the finish paint component comprises polyester resin, amino resin, a third solvent and a second auxiliary agent. The epoxy zinc-rich primer is used as a closed base layer and coated on at least one surface of the frame and the back plate to provide all-around protection so as to improve the weather resistance of the frame and the back plate in a mode of combining the epoxy zinc-rich primer which takes epoxy resin and zinc powder as main raw materials and the polyester resin and amino resin finish; the polyester resin and the amino resin finish paint can protect the epoxy zinc-rich primer from being damaged by ultraviolet rays, and the defect that the epoxy resin is not resistant to the ultraviolet rays is overcome in a targeted manner.
Description
Technical Field
The invention relates to the technical field of photovoltaic modules, in particular to a coating, a preparation method of the coating and a photovoltaic module.
Background
Photovoltaic solar power generation is an engineering technology for directly converting solar energy into electric energy by applying a photovoltaic effect principle. If the photovoltaic module is installed in an atmospheric corrosion environment, such as a C5 environment, the back plate and the frame are subjected to wind, sunlight and rain for a long time, the coatings of the frame and the back plate can generate the phenomena of non-weather resistance such as bubbling, cracking and peeling, so that the damage of the laminated part is caused, and the traditional coating cannot meet the C5 environment. Atmospheric corrosive environments are generally divided into five categories, the C1-C5 environments, the C5 very harsh corrosive environments, including industrial areas of C5-I high humidity and harsh atmosphere, coastal and seawater areas of C5-M high salinity, buildings and areas where condensation and high pollution continue to occur and exist.
The existing photovoltaic module is matched with the frame and the back plate, and under the C5 environment, the protection of the coating needs to be carried out, and the currently used coating cannot meet the requirement that the frame and the back plate in the photovoltaic module have good weather resistance in the C5 environment.
Disclosure of Invention
In view of the above, the present invention provides a coating comprising, in parts by weight, a first primer component, a second primer component, and a topcoat component;
the first primer component comprises 20-40 parts of epoxy resin, 10-40 parts of filler, 0.5-2 parts of graphene, 0-10 parts of first solvent and 0.5-5 parts of first auxiliary agent;
the second primer component comprises 3-4 parts of a curing agent and 1-2 parts of a second solvent;
the finish paint component comprises 20-40 parts of polyester resin, 10-30 parts of amino resin, 10-20 parts of third solvent and 1-7 parts of second auxiliary agent.
Optionally, the first primer component further comprises 10-40 parts of a first pigment;
the finishing coat component also comprises 10-20 parts of a second pigment.
Optionally, the first auxiliary agent comprises 0.1-1 part of first dispersing agent, 0.1-1 part of first defoaming agent, 0.1-1 part of first leveling agent, 0.1-1 part of first anti-settling agent and 0.1-1 part of first anti-sagging auxiliary agent.
Optionally, the second auxiliary agent comprises 0.1-1 part of second dispersing agent, 0.1-1 part of second defoaming agent, 0.1-1 part of second leveling agent, 0.1-1 part of second anti-settling agent, 0.1-1 part of second anti-sagging auxiliary agent and 0.5-2 parts of matting agent.
Optionally, the mass ratio of the first primer component to the second primer component is in the range of 100: 5-10.
Optionally, the particle size of the zinc powder is 500-800 meshes.
The invention also provides a coating preparation method, which comprises the following steps:
preparing a first primer component: dissolving epoxy resin in a first solvent, adding a first auxiliary agent, stirring, adding a filler, and uniformly stirring, wherein the stirring speed is 1000-2000r/min, so as to obtain a first primer component;
preparing a second primer component: uniformly stirring the curing agent and the second solvent, wherein the stirring speed is 1000-;
preparing a primer component: mixing the first primer component and the second primer component, and uniformly stirring, wherein the stirring speed is 1000-2000r/min, so as to obtain the primer component;
preparing a finish paint component: firstly, dissolving polyester resin and amino resin in a third solvent, adding a second auxiliary agent, and uniformly stirring, wherein the stirring speed is 1000-2000r/min, so as to obtain the finish paint component.
Optionally, dissolving the epoxy resin in the first solvent, adding the first auxiliary agent for stirring, adding the filler for stirring uniformly, wherein the stirring speed is 1000-2000r/min, and obtaining the first primer component comprises:
dissolving the epoxy resin in the first solvent, and adding a first dispersing agent during stirring for 30-60 min; then adding a first defoaming agent, a first leveling agent, a first anti-settling agent and a first anti-sagging auxiliary agent, and stirring for 5-15 min; finally, adding the filler and the first pigment, and stirring for 30-60 min.
Optionally, the polyester resin and the amino resin are dissolved in a third solvent, and a second auxiliary agent is added and uniformly stirred, wherein the stirring speed is 1000-2000r/min, and the obtained finish paint component comprises:
dissolving the polyester resin and the amino resin in the third solvent, and adding a second dispersing agent during stirring for 30-60 min; then adding a second defoaming agent, a second leveling agent, a second anti-settling agent, a second anti-sagging auxiliary agent and a flatting agent, and stirring for 5-15 min; and finally adding the second pigment, and stirring for 30-60 min.
The invention also provides a photovoltaic module which comprises a laminating part and a frame coated on the periphery of the laminating part;
the laminate comprises a backsheet; wherein the coating is arranged on the surface of at least one of the frame and the back plate.
Compared with the prior art, the coating provided by the invention at least realizes the following beneficial effects:
according to the embodiment, the coating provided by the invention at least achieves the following beneficial effects:
firstly, an epoxy zinc-rich primer which takes epoxy resin and zinc powder as main raw materials and a polyester resin and amino resin finish paint are combined, the epoxy zinc-rich primer is taken as a closed base layer, and the epoxy zinc-rich primer can provide all-around protection after being coated on at least one surface of a frame and a back plate so as to improve the weather resistance of the frame and the back plate; the polyester resin and amino resin finish paint can protect the epoxy zinc-rich primer from being damaged by ultraviolet rays, and the defect that the epoxy resin is not resistant to ultraviolet rays is overcome in a targeted manner;
secondly, the epoxy zinc-rich primer has a remarkable water vapor isolation effect, can protect at least one surface of the frame and the backboard from being corroded by water vapor, has excellent salt mist resistance, and can protect at least one surface of the frame and the backboard from being corroded by salt mist in a C5 environment; the polyester resin and amino resin finish paint not only protects the epoxy resin from being damaged by ultraviolet rays, but also has excellent shock resistance and extremely high hardness, is not easy to knock and scratch to cause the epoxy primer to be exposed in the air, has excellent outdoor durability, and can resist the corrosion of severe environment; in addition, the product has excellent glossiness and fullness and excellent aesthetic property, and can meet the requirements of customers on the appearance of the product.
Thirdly, the raw materials of the coating are bulk commodities, are simple and easy to obtain, have low price, and when the coating is matched with the frame and the back plate for use, the coating still can enable the product to have price advantage relative to an aluminum frame, and meet the trend and the demand of cost reduction in the photovoltaic industry.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic view of the assembly of the frame and the laminate provided by the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the following examples, the first auxiliary agent comprises 0.1-1 part of first dispersing agent, 0.1-1 part of first defoaming agent, 0.1-1 part of first leveling agent, 0.1-1 part of first anti-settling agent and 0.1-1 part of first anti-sagging auxiliary agent; the second auxiliary agent comprises 0.1-1 part of second dispersing agent, 0.1-1 part of second defoaming agent, 0.1-1 part of second leveling agent, 0.1-1 part of second anti-settling agent, 0.1-1 part of second anti-sagging auxiliary agent and 0.5-2 parts of matting agent; the first solvent is a little solvent or no solvent, specifically is a mixed solvent of xylene and n-butanol, and the mass ratio of the xylene to the n-butanol is 1-3: 1; the second solvent and the third solvent are both xylene or toluene; the filler is zinc powder with the particle size of 500-800 meshes;
example 1
The coating comprises a first primer component, a second primer component and a finish component in parts by weight;
a first primer component: 25-35 parts of epoxy resin; 15-35 parts of a filler; 1-1.5 parts of graphene; 2-8 parts of a first solvent; 0.3-0.7 part of first dispersing agent; 0.3-0.7 part of a first defoaming agent; 0.3-0.7 part of first leveling agent; 0.3-0.7 part of first anti-settling agent; 0.3-0.7 part of first anti-sagging auxiliary agent;
a second primer component: 3.2-3.8 parts of a curing agent; 1.2-1.8 parts of a second solvent;
the finish paint comprises the following components: 25-35 parts of polyester resin; 15-25 parts of amino resin; 12-18 parts of a third solvent; 0.3-0.7 part of second dispersing agent; 0.3-0.7 part of a second defoaming agent; 0.3-0.7 part of second leveling agent; 0.3-0.7 part of second anti-settling agent; 0.3-0.7 part of second anti-sagging auxiliary agent and 0.8-1.7 parts of flatting agent.
Example 2
The coating comprises a first primer component, a second primer component and a finish component in parts by weight;
a first primer component: 20 parts of epoxy resin; 10 parts of a filler; 0.5 part of graphene; 0 part of a first solvent; 0.1 part of a first dispersing agent; 0.1 part of a first defoaming agent; 0.1 part of first leveling agent; 0.1 part of a first anti-settling agent; 0.1 part of a first anti-sagging auxiliary agent;
a method of preparing a first primer component comprising the steps of: adding epoxy resin at room temperature, stirring by using a dispersion machine, adding a first dispersing agent for high-speed dispersion for 30-60min in the stirring process, and then adding a first defoaming agent, a first leveling agent, a first anti-settling agent and a first anti-sagging auxiliary agent for high-speed dispersion for 5-15 min; then adding a filler for high-speed dispersion for 30-60min, and finally adding graphene for high-speed dispersion for 30-60min, wherein the stirring speed is 1000-;
a second primer component: 3 parts of a curing agent; 1 part of a second solvent;
a method of preparing a second primer component comprising the steps of: uniformly stirring the curing agent and the second solvent by using a dispersion machine at the stirring speed of 1000-;
when the primer is used, the first primer component and the second primer component are mixed according to the mass ratio of 100: 5.
The finish paint comprises the following components: 20 parts of polyester resin; 10 parts of amino resin; 10 parts of a third solvent; 0.1 part of a second dispersing agent; 0.1 part of a second defoaming agent; 0.1 part of a second leveling agent; 0.1 part of a second anti-settling agent; 0.1 part of a second anti-sagging auxiliary agent; 0.5 part of flatting agent.
The preparation method of the finish paint component comprises the following steps: at room temperature, firstly dissolving polyester resin and amino resin in a third solvent, stirring by using a dispersion machine, firstly adding a second dispersing agent for high-speed dispersion for 30-60min in the stirring process, and then adding a second defoaming agent, a second leveling agent, a second anti-settling agent, a second anti-sagging auxiliary agent and a matting agent for high-speed dispersion for 5-15min, wherein the stirring speed is 1000-2000r/min, so as to obtain a finish paint component, wherein the stirring speed is 1000-2000r/min, so that various raw materials are dispersed in the dispersion machine at high speed, and the stirring is more uniform.
The filler is zinc powder, the particle size of the zinc powder is 500-800 meshes, can be 500-800 meshes, 600-700 meshes or 800 meshes, the higher the mesh number is, the smaller the particle size of the zinc powder is, the weather resistance can be provided by utilizing the zinc powder with the particle size of 500-800 meshes, the dense product generated by the corrosion of the zinc powder blocks the coating pores to form a shielding layer through physical isolation, so that the protection effect of the coating on steel is improved, of course, the zinc powder can also adopt a mixture of the zinc powder with the particle sizes of 1:1:1 in parts by weight of 500-600-700-800 meshes, so that the mixture forms a particle gradient, the coating pores can be filled more effectively to form the shielding layer, and the protection of the coating on the steel is improved more effectively.
The graphene can enhance the corrosion resistance of epoxy resin, reduce the using amount of zinc powder, improve the adhesive force of the primer, and perfectly combine with the finish paint while protecting the substrate.
It should be noted that: the adding sequence of the first defoaming agent, the first leveling agent, the first anti-settling agent and the first anti-sagging auxiliary agent in the first primer component and the adding sequence of the second defoaming agent, the second leveling agent, the second anti-settling agent, the second anti-sagging auxiliary agent and the matting agent in the finish paint component are not limited.
Example 3
The coating comprises a first primer component, a second primer component and a finish component in parts by weight;
a first primer component: 25 parts of epoxy resin; 15 parts of a filler; 1 part of graphene; 2 parts of a first solvent; 0.2 part of a first dispersing agent; 0.2 part of a first defoaming agent; 0.2 part of first leveling agent; 0.2 part of a first anti-settling agent; 0.2 part of a first anti-sagging auxiliary agent;
a method of preparing a first primer component comprising the steps of: dissolving epoxy resin in a first solvent at room temperature, stirring by using a dispersion machine, adding a first dispersing agent for high-speed dispersion for 30-60min in the stirring process, and then adding a first defoaming agent, a first leveling agent, a first anti-settling agent and a first anti-sagging auxiliary agent for high-speed dispersion for 5-15 min; then adding a filler for high-speed dispersion for 30-60min, and finally adding graphene for high-speed dispersion for 30-60min, wherein the stirring speed is 1000-;
a second primer component: 3.2 parts of a curing agent; 1.2 parts of a second solvent;
a method of preparing a second primer component comprising the steps of: uniformly stirring the curing agent and the second solvent by using a dispersion machine at the stirring speed of 1000-;
when the primer is used, the first primer component and the second primer component are mixed according to the mass ratio of 100: 6.
The finish paint comprises the following components: 25 parts of polyester resin; 15 parts of amino resin; 12 parts of a third solvent; 0.2 part of a second dispersing agent; 0.2 part of a second defoaming agent; 0.2 part of a second leveling agent; 0.2 part of a second anti-settling agent; 0.2 part of a second anti-sagging auxiliary agent; 0.8 part of flatting agent.
The preparation method of the finish paint component comprises the following steps: at room temperature, firstly dissolving the polyester resin and the amino resin in a third solvent, stirring by using a dispersion machine, firstly adding a second dispersing agent for high-speed dispersion for 30-60min in the stirring process, and then adding a second defoaming agent, a second leveling agent, a second anti-settling agent, a second anti-sagging auxiliary agent and a matting agent for high-speed dispersion for 5-15min, wherein the stirring speed is 1000-2000r/min, so as to obtain the finish paint component.
Example 4
The coating comprises a first primer component, a second primer component and a finish component in parts by weight;
a first primer component: 27 parts of epoxy resin; 20 parts of a filler; 1.1 parts of graphene; 4 parts of a first solvent; 0.4 part of a first dispersing agent; 0.4 part of a first defoaming agent; 0.4 part of first leveling agent; 0.4 part of first anti-settling agent; 0.4 part of first anti-sagging auxiliary agent;
the first primer component was prepared in the same manner as the first primer component in example 2;
a second primer component: 3.4 parts of a curing agent; 1.4 parts of a second solvent;
the second primer component was prepared in the same manner as the second primer component in example 2;
when the primer is used, the first primer component and the second primer component are mixed according to the mass ratio of 100:7.
The finish paint comprises the following components: 27.5 parts of polyester resin; 22.5 parts of amino resin; 14 parts of a third solvent; 0.4 part of a second dispersing agent; 0.4 part of a second defoaming agent; 0.4 part of a second leveling agent; 0.4 part of a second anti-settling agent; 0.4 part of a second anti-sagging auxiliary agent; and 1 part of a flatting agent.
The preparation method of the top coat component was the same as that of the top coat component in example 2.
Example 5
The coating comprises a first primer component, a second primer component and a finish component in parts by weight;
a first primer component: 30 parts of epoxy resin; 25 parts of a filler; 1.25 parts of graphene; 5 parts of a first solvent; 0.55 part of a first dispersing agent; 0.55 part of a first defoaming agent; 0.55 part of first leveling agent; 0.55 part of first anti-settling agent; 0.55 part of first anti-sagging auxiliary agent;
the first primer component was prepared in the same manner as the first primer component in example 2;
a second primer component: 3.5 parts of a curing agent; 1.5 parts of a second solvent;
the second primer component was prepared in the same manner as the second primer component in example 2;
when the primer is used, the first primer component and the second primer component are mixed according to the mass ratio of 100: 7.5.
The finish paint comprises the following components: 30 parts of polyester resin; 20 parts of amino resin; 15 parts of a third solvent; 0.55 part of a second dispersing agent; 0.55 part of a second defoaming agent; 0.55 part of second leveling agent; 0.55 part of second anti-settling agent; 0.55 part of second anti-sagging auxiliary agent; and 1.25 parts of a flatting agent.
The preparation method of the top coat component was the same as that of the top coat component in example 2.
Example 6
The coating comprises a first primer component, a second primer component and a finish component in parts by weight;
a first primer component: 35 parts of epoxy resin; 30 parts of a filler; 1.4 parts of graphene; 7 parts of a first solvent; 0.65 part of first dispersant; 0.65 part of a first defoaming agent; 0.65 part of first leveling agent; 0.65 part of first anti-settling agent; 0.65 part of first anti-sagging auxiliary agent;
the first primer component was prepared in the same manner as the first primer component in example 2;
a second primer component: 3.6 parts of a curing agent; 1.7 parts of a second solvent;
the second primer component was prepared in the same manner as the second primer component in example 2;
when the primer is used, the first primer component and the second primer component are mixed according to the mass ratio of 100: 8.
The finish paint comprises the following components: 35 parts of polyester resin; 25 parts of amino resin; 17 parts of a third solvent; 0.65 part of a second dispersing agent; 0.65 part of a second defoaming agent; 0.65 part of a second leveling agent; 0.65 part of a second anti-settling agent; 0.55 part of second anti-sagging auxiliary agent; and 1.25 parts of a flatting agent.
The preparation method of the top coat component was the same as that of the top coat component in example 2.
Example 7
The coating comprises a first primer component, a second primer component and a finish component in parts by weight;
a first primer component: 37 parts of epoxy resin; 35 parts of a filler; 1.65 parts of graphene; 8.5 parts of a first solvent; 0.8 part of first dispersant; 0.8 part of a first defoaming agent; 0.8 part of first leveling agent; 0.8 part of first anti-settling agent; 0.8 part of first anti-sagging auxiliary agent;
the first primer component was prepared in the same manner as the first primer component in example 2;
a second primer component: 3.8 parts of a curing agent; 1.85 parts of a second solvent;
the second primer component was prepared in the same manner as the second primer component in example 2;
when the primer is used, the first primer component and the second primer component are mixed according to the mass ratio of 100: 9.
The finish paint comprises the following components: 37 parts of polyester resin; 27 parts of amino resin; 18.5 parts of a third solvent; 0.8 part of a second dispersing agent; 0.8 part of a second defoaming agent; 0.8 part of a second leveling agent; 0.8 part of a second anti-settling agent; 0.8 part of a second anti-sagging auxiliary agent; and 1.5 parts of a flatting agent.
The preparation method of the top coat component was the same as that of the top coat component in example 2.
Example 8
The coating comprises a first primer component, a second primer component and a finish component in parts by weight;
a first primer component: 40 parts of epoxy resin; 40 parts of a filler; 2 parts of graphene; 10 parts of a first solvent; 1 part of a first dispersing agent; 1 part of a first defoaming agent; 1 part of a first leveling agent; 1 part of a first anti-settling agent; 1 part of a first anti-sagging auxiliary agent;
the first primer component was prepared in the same manner as the first primer component in example 2;
a second primer component: 4 parts of a curing agent; 2 parts of a second solvent;
the second primer component was prepared in the same manner as the second primer component in example 2;
when the primer is used, the first primer component and the second primer component are mixed according to the mass ratio of 100: 10.
The finish paint comprises the following components: 40 parts of polyester resin; 30 parts of amino resin; 20 parts of a third solvent; 1 part of a second dispersing agent; 1 part of a second defoaming agent; 1 part of a second leveling agent; 1 part of a second anti-settling agent; 1 part of a second anti-sagging auxiliary agent; and 2 parts of a flatting agent.
The preparation method of the top coat component was the same as that of the top coat component in example 2.
Example 9
The coating comprises a first primer component, a second primer component and a finish component in parts by weight;
a first primer component: 20 parts of epoxy resin; 10 parts of a filler; 10 parts of a first pigment; 0.5 part of graphene; 0 part of a first solvent; 0.1 part of a first dispersing agent; 0.1 part of a first defoaming agent; 0.1 part of first leveling agent; 0.1 part of a first anti-settling agent; 0.1 part of a first anti-sagging auxiliary agent;
a method of preparing a first primer component comprising the steps of: adding epoxy resin at room temperature, stirring by using a dispersion machine, adding a first dispersing agent for high-speed dispersion for 30-60min in the stirring process, and then adding a first defoaming agent, a first leveling agent, a first anti-settling agent and a first anti-sagging auxiliary agent for high-speed dispersion for 5-15 min; then adding a filler and a first pigment for high-speed dispersion for 30-60min, and finally adding graphene for high-speed dispersion for 30-60min, wherein the stirring speed is 1000-2000r/min, so as to obtain a first primer component;
a second primer component: 3 parts of a curing agent; 1 part of a second solvent;
a method of preparing a second primer component comprising the steps of: uniformly stirring the curing agent and the second solvent by using a dispersion machine at the stirring speed of 1000-;
when the primer is used, the first primer component and the second primer component are mixed according to the mass ratio of 100: 5.
The finish paint comprises the following components: 20 parts of polyester resin; 10 parts of amino resin; 10 parts of a second pigment; 10 parts of a third solvent; 0.1 part of a second dispersing agent; 0.1 part of a second defoaming agent; 0.1 part of a second leveling agent; 0.1 part of a second anti-settling agent; 0.1 part of a second anti-sagging auxiliary agent; 0.5 part of flatting agent.
The preparation method of the finish paint component comprises the following steps: at room temperature, firstly dissolving polyester resin and amino resin in a third solvent, stirring by using a dispersion machine, firstly adding a second dispersing agent for high-speed dispersion for 30-60min in the stirring process, then adding a second defoaming agent, a second leveling agent, a second anti-settling agent, a second anti-sagging auxiliary agent and a flatting agent for high-speed dispersion for 5-15min, and then adding a second pigment for high-speed dispersion for 30-60min, wherein the stirring speeds are all 1000-2000r/min, so as to obtain the finish paint component.
The first pigment is an antirust pigment which can be titanium dioxide, iron oxide red and sericite powder, and the antirust pigment is added to prevent metal corrosion and improve the protection effect of a paint film on the metal surface; the second pigment is aluminum silver powder or glittering powder, and is added to provide colors, so that the surface of at least one of the frame and the back plate is more attractive, the requirements of customers on the appearance of products can be met, and other pigments can be adopted besides the aluminum silver powder or the glittering powder as long as the colors can be provided.
Example 10
The coating comprises a first primer component, a second primer component and a finish component in parts by weight;
a first primer component: 30 parts of epoxy resin; 25 parts of a filler; 25 parts of a first pigment; 1.25 parts of graphene; 5 parts of a first solvent; 0.55 part of a first dispersing agent; 0.55 part of a first defoaming agent; 0.55 part of first leveling agent; 0.55 part of first anti-settling agent; 0.55 part of first anti-sagging auxiliary agent;
a method of preparing a first primer component comprising the steps of: dissolving epoxy resin in a first solvent at room temperature, stirring by using a dispersion machine, adding a first dispersing agent for high-speed dispersion for 30-60min in the stirring process, and then adding a first defoaming agent, a first leveling agent, a first anti-settling agent and a first anti-sagging auxiliary agent for high-speed dispersion for 5-15 min; then adding a filler and a first pigment for high-speed dispersion for 30-60min, and finally adding graphene for high-speed dispersion for 30-60min, wherein the stirring speed is 1000-2000r/min, so as to obtain a first primer component;
a second primer component: 3.2 parts of curing agent and 1.2 parts of second solvent;
a method of preparing a second primer component comprising the steps of: uniformly stirring the curing agent and the second solvent by using a dispersion machine at the stirring speed of 1000-;
when the primer is used, the first primer component and the second primer component are mixed according to the mass ratio of 100: 7.5.
The finish paint comprises the following components: 30 parts of polyester resin; 20 parts of amino resin; 15 parts of a second pigment; 15 parts of a third solvent; 0.55 part of a second dispersing agent; 0.55 part of a second defoaming agent; 0.55 part of second leveling agent; 0.55 part of second anti-settling agent; 0.55 part of second anti-sagging auxiliary agent; and 1.25 parts of a flatting agent.
The preparation method of the finish paint component comprises the following steps: at room temperature, firstly dissolving polyester resin and amino resin in a third solvent, stirring by using a dispersion machine, firstly adding a second dispersing agent for high-speed dispersion for 30-60min in the stirring process, then adding a second defoaming agent, a second leveling agent, a second anti-settling agent, a second anti-sagging auxiliary agent and a flatting agent for high-speed dispersion for 5-15min, and then adding a second pigment for high-speed dispersion for 30-60min, wherein the stirring speeds are all 1000-2000r/min, so as to obtain the finish paint component.
Example 11
The coating comprises a first primer component, a second primer component and a finish component in parts by weight;
a first primer component: 30 parts of epoxy resin; 30 parts of an anti-rust pigment; 25 parts of a filler; 2 parts of graphene; 1 part of a first dispersing agent; 0.5 part of a first defoaming agent; 0.5 part of first leveling agent; 0.5 part of first anti-settling agent; 0.5 part of first anti-sagging auxiliary agent; 10 parts of a first solvent;
the first primer component was prepared in the same manner as the first primer component in example 9;
a second primer component: 3 minutes of curing agent; 2 parts of a second solvent;
the second primer component was prepared in the same manner as the second primer component in example 9;
the finish paint comprises the following components: 35 parts of polyester resin; 30 parts of amino resin; 20 parts of pigment; 2 parts of a dispersing agent; 0.5 part of defoaming agent; 0.5 part of a leveling agent; 0.5 part of anti-settling agent; 0.5 part of anti-sagging auxiliary agent; 1 part of a flatting agent; 10 parts of a third solvent;
the preparation method of the topcoat composition was the same as that of the topcoat composition in example 9;
example 12
The coating comprises a first primer component, a second primer component and a finish component in parts by weight;
a first primer component: 40 parts of epoxy resin; 40 parts of a filler; 40 parts of a first pigment; 2 parts of graphene; 10 parts of a first solvent; 1 part of a first dispersing agent; 1 part of a first defoaming agent; 1 part of a first leveling agent; 1 part of a first anti-settling agent; 1 part of a first anti-sagging auxiliary agent;
the first primer component was prepared in the same manner as the first primer component in example 9;
a second primer component: 4 parts of a curing agent; 2 parts of a second solvent;
the second primer component was prepared in the same manner as the second primer component in example 9;
when the primer is used, the first primer component and the second primer component are mixed according to the mass ratio of 100: 10.
The finish paint comprises the following components: 40 parts of polyester resin; 30 parts of amino resin; 20 parts of a second pigment; 20 parts of a third solvent; 1 part of a second dispersing agent; 1 part of a second defoaming agent; 1 part of a second leveling agent; 1 part of a second anti-settling agent; 1 part of a second anti-sagging auxiliary agent; and 2 parts of a flatting agent.
The preparation of the topcoat composition was the same as that of the topcoat composition of example 9.
The coatings of examples 1-12 above were applied to a damp heat test DH2000h, a high pressure accelerated aging life test PCT96h, a high humidity UV resistance of 2500kWh and a salt spray 2000h with the following results:
the results can obtain that the coating has no phenomena of bubbling, cracking, peeling and the like after DH2000h, PCT96, high humidity ultraviolet resistance 2500kWh and salt spray 2000h tests, and can pass IEC61215 reliability tests.
According to the embodiment, the coating provided by the invention at least achieves the following beneficial effects:
firstly, an epoxy zinc-rich primer which takes epoxy resin and zinc powder as main raw materials and a polyester resin and amino resin finish paint are combined, the epoxy zinc-rich primer is taken as a closed base layer, and the epoxy zinc-rich primer can provide all-around protection after being coated on at least one surface of a frame and a back plate so as to improve the weather resistance of the frame and the back plate; the polyester resin and amino resin finish paint can protect the epoxy zinc-rich primer from being damaged by ultraviolet rays, and the defect that the epoxy resin is not resistant to ultraviolet rays is overcome in a targeted manner;
secondly, the epoxy zinc-rich primer has a remarkable water vapor isolation effect, can protect at least one surface of the frame and the backboard from being corroded by water vapor, has excellent salt mist resistance, and can protect at least one surface of the frame and the backboard from being corroded by salt mist in a C5 environment; the polyester resin and amino resin finish paint not only protects the epoxy resin from being damaged by ultraviolet rays, but also has excellent shock resistance and extremely high hardness, is not easy to knock and scratch to cause the epoxy primer to be exposed in the air, has excellent outdoor durability, and can resist the corrosion of severe environment; in addition, the product has excellent glossiness and fullness and excellent aesthetic property, and can meet the requirements of customers on the appearance of the product.
Thirdly, the raw materials of the coating are bulk commodities, are simple and easy to obtain, have low price, and when the coating is matched with the frame and the back plate for use, the coating still can enable the product to have price advantage relative to an aluminum frame, and meet the trend and the demand of cost reduction in the photovoltaic industry.
Based on the same inventive concept, the present application further provides a photovoltaic module, fig. 1 is an assembly schematic diagram of the frame and the laminated member provided by the present invention, as shown in fig. 1, a photovoltaic module 100 includes a laminated member 10 and a frame 20 covering the laminated member 10;
the laminate 10 includes a backing sheet 30; wherein the coating 40 as in embodiments 1-12 above is disposed on a surface of at least one of the bezel 20 and the backplate 30.
Specifically, after uniformly stirring the primer and the finish according to the coating formulations of examples 1 to 12, coating the primer on at least one surface of the upper frame 20 and the back plate 30 of the photovoltaic module 100 by using an electrophoresis or spraying method, and drying at normal temperature and in an environment with 20 to 60 percent of humidity; after full drying, spraying a top finish, and after spraying the top finish, drying the top finish by adopting a heating and baking method, specifically: placing the frame 20 and the back plate 30 which are sprayed with finish paint at room temperature for 10-20 min; then the frame 20 and the back plate 30 are put into an oven with the temperature of 100-140 ℃ for drying for 10-30 min; and finally, taking the dried frame 20 and the dried back plate 30 out of the oven, and polishing the surfaces, wherein the thickness of the primer dry film is 30-100um, and the thickness of the finish dry film is 20-50 um.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A coating comprising, by weight, a first primer component, a second primer component, and a topcoat component;
the first primer component comprises 20-40 parts of epoxy resin, 10-40 parts of filler, 0.5-2 parts of graphene, 0-10 parts of first solvent and 0.5-5 parts of first auxiliary agent;
the second primer component comprises 3-4 parts of a curing agent and 1-2 parts of a second solvent;
the finish paint component comprises 20-40 parts of polyester resin, 10-30 parts of amino resin, 10-20 parts of third solvent and 1-7 parts of second auxiliary agent.
2. The coating of claim 1, wherein the first primer component further comprises 10-40 parts of a first pigment;
the finishing coat component also comprises 10-20 parts of a second pigment.
3. The coating of claim 1, wherein the first adjuvant comprises 0.1-1 parts of a first dispersant, 0.1-1 parts of a first defoamer, 0.1-1 parts of a first leveling agent, 0.1-1 parts of a first anti-settling agent, and 0.1-1 parts of a first anti-sagging adjuvant.
4. The coating of claim 1, wherein the second adjuvant comprises 0.1-1 part of second dispersant, 0.1-1 part of second defoamer, 0.1-1 part of second leveling agent, 0.1-1 part of second anti-settling agent, 0.1-1 part of second anti-sagging adjuvant, and 0.5-2 parts of matting agent.
5. The coating of claim 1, wherein the mass ratio of the first primer component to the second primer component is from 100:5 to 10.
6. The coating of any one of claims 1-5, wherein the filler is zinc powder having a particle size of 500-800 mesh.
7. A method for preparing a coating according to any one of claims 1 to 6, comprising the steps of:
preparing a first primer component: dissolving epoxy resin in a first solvent, adding a first auxiliary agent, stirring, adding a filler, and uniformly stirring, wherein the stirring speed is 1000-2000r/min, so as to obtain a first primer component;
preparing a second primer component: uniformly stirring the curing agent and the second solvent, wherein the stirring speed is 1000-;
preparing a primer component: mixing the first primer component and the second primer component, and uniformly stirring, wherein the stirring speed is 1000-2000r/min, so as to obtain the primer component;
preparing a finishing coat component: firstly, dissolving polyester resin and amino resin in a third solvent, adding a second auxiliary agent, and uniformly stirring, wherein the stirring speed is 1000-2000r/min, so as to obtain the finish paint component.
8. The method for preparing the coating according to claim 7, wherein the dissolving of the epoxy resin in the first solvent comprises adding the first auxiliary agent, stirring, adding the filler, and stirring uniformly, wherein the stirring speed is 1000-:
dissolving the epoxy resin in the first solvent, and adding a first dispersing agent during stirring for 30-60 min; then adding a first defoaming agent, a first leveling agent, a first anti-settling agent and a first anti-sagging auxiliary agent, and stirring for 5-15 min; finally, adding the filler and the first pigment, and stirring for 30-60 min.
9. The method for preparing the coating according to claim 7, wherein the polyester resin and the amino resin are dissolved in the third solvent, the second additive is added, and the mixture is uniformly stirred, wherein the stirring speed is 1000-2000r/min, and the obtaining of the finish paint component comprises:
dissolving the polyester resin and the amino resin in the third solvent, and adding a second dispersing agent during stirring for 30-60 min; then adding a second defoaming agent, a second leveling agent, a second anti-settling agent, a second anti-sagging auxiliary agent and a flatting agent, and stirring for 5-15 min; and finally adding the second pigment, and stirring for 30-60 min.
10. A photovoltaic module is characterized by comprising a laminating part and a frame coated on the periphery of the laminating part;
the laminate comprises a backsheet; the coating of any of claims 1-6 disposed on a surface of at least one of the bezel and the backplate.
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