CN104356842A - PCTFE coating material with high water vapor barrier property and preparation method thereof - Google Patents
PCTFE coating material with high water vapor barrier property and preparation method thereof Download PDFInfo
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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
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/22—Esters containing halogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F259/00—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00
- C08F259/08—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing fluorine
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/14—Gas barrier composition
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Abstract
The invention discloses a PCTFE coating material with high water vapor barrier property and a preparation method thereof. The coating material is prepared from the following raw materials in parts by weight: 50-60 parts of PCTFE, 10-14 parts of methyl acrylate, 13-17 parts of trifluoroethyl methacrylate, 5-9 parts of toluene diisocyanate, 7-11 parts of hydroxyethyl acrylate, 4-8 parts of azodiisobutyronitrile, 3-6 parts of triethylamine, 4-8 parts of gadoleic acid, 5-9 parts of dipropylene glycol methylether, 2-5 parts of leveling agent, 2-5 parts of KH550, 3-6 parts of polydimethylsiloxane and 1-4 parts of poly-3-methylthiophene. The coating material disclosed by the invention has the characteristics of good weather resistance, strong water vapor barrier property and high adhesion and can form excellent adaptation to a sealing material, particularly EVA, in a solar cell assembly. The coating material is simple in production process, low in production cost, easy in transportation and storage and easy in industrial production and is environment-friendly, thereby having market application values.
Description
Technical field
The present invention relates to high water vapor rejection PCTFE coating and preparation method thereof.
Background technology
Along with Nonrenewable resources gradually reduce and mineral substance resource produce, use in produce various pollutions ask interest, each state all with policy, the means of law progressively strengthen exploitation to the renewable energy resources and clean energy, and make great efforts to improve its ratio in the whole energy uses.At these in clean and renewable energy source, sun power is wherein one of most important energy.Solar energy power generating more and more becomes the part in our life, and country 12 plan is set in 15GW total installation in 2015, and this just can quietly become from solar electrical energy generation in the near future predictive of a part for our household electricity.For photovoltaic generation industry, while improving constantly technology, more to reduce costs.What current solar facilities was conventional is solar panel, and it is the visual plant converted solar energy into electrical energy.Solar panel mainly comprises glass, EVA glued membrane, frame, notacoria, terminal box, silica gel etc., other material at present except notacoria realizes highly domesticizing in Chinese photovoltaic industry all, greatly reduces the manufacturing cost of solar module unit generated output.But, notacoria is as the important solar module packaged material of a class, its technical threshold requires quite high, in addition relevant raw materials restricts by the patented technology of the fluorine chemical giant that goes abroad for a long time, even to this day its degree domestic is still extremely low, the notacoria causing present domestic solar module manufacturer to adopt is mostly external imported product, and the higher and Lead Time of price can not ensure.Therefore, from the manufacturing cost angle reducing solar module unit generated output, notacoria production domesticization is the inevitable choice of Chinese photovoltaic enterprise.
Due to too old can battery modules be placed on outdoor electric product, therefore backboard is except having defencive function, reliable insulating property, water preventing ability, the ageing-resistant performance that also must to possess 25 years.If the performance that sun power backboard intercepts vapor permeation is bad, moisture (especially overcast and rainy moisture is larger) then in air can enter into inner side through sun power backboard, the infiltration of water vapour can have influence on the adhesive property of EVA (ethene one acetate ethylene copolymer), cause backboard and EVA to depart from, and then make more moistures directly contact cell piece and make cell piece oxidized.This type of service life of the products generally designed according to more than 25 years; guarantee the time limit of service that product reaches so long; just need each assembly quality of strict control; and the effect of solar cell backboard should not be underestimated in these assemblies, solar cell backboard plays a part to protect the cell piece in photovoltaic module.As the major parts of solar electrical energy generation, the quality of photovoltaic module very important, and the raw material of the life-span of photovoltaic module and its use is closely related.In all raw materials, the plastic components life-span is the shortest.So in photovoltaic module the life-span of plastic components determine the life-span of photovoltaic module.In all plastic components, backboard is most important beyond doubt.Backboard is cost proportion the best part in all packaged materials, and due to the rapid reduction of silicon materials price, it also becomes one of assembly cost important composition.The cost of backboard determined by its material used, and the life-span of differing materials is different, whether can meet the problem that 25 year life-span also became more and more assembly factory and the user that generates electricity is concerned about of component calls.If notacoria cannot meet the solar module environmental test of 25 years in ageing-resistant, resistance to insulation, resistance to aqueous vapor etc., the reliability of solar cell, stability and weather resistance is caused to be protected the most at last, cause battery module to come off, cell piece slippage, battery useful output reduction etc. be bad, more it is a risk that battery component can occur when low voltage and current value that electricity beats arc phenomenon, cause battery component to burn and inspire fire, causing personal security to damage and property damage.
At present, the solar cell notacoria of main flow mostly is multiple glue-type notacoria and the application type notacoria of double-side fluorine.Mostly multiple glue-type solar cell notacoria (TPT, KPK etc.) is to be bondd by tackiness agent and PET base material with fluorine films such as PVF or PVDF of more American-European fluorine chemical enterprise developments to be composited.There is tackiness agent due to its inner PET base material two sides in multiple glue-type notacoria, and the quality level of tackiness agent differs, in addition recombining process is very different, in the outdoor life-time service process of battery component, compound notacoria is subject to the combined influence of humidity and temperature dual factor, the infringements such as easy generation glue line hydrolysis, finally cause fluorine film (PVF or PVDF etc.) and the splitting of PET base material, be difficult to meet the long-term reliability requirement of battery component.Meanwhile, owing to manufacturing the reasons such as the hydrophilically modified treatment technology of patented technology restriction and fluorine film surface, the fluorine film products such as current PVF and PVDF also do not realize production domesticization in China.Therefore, the Chinese Enterprise of the fluorine film Development and Production double-side fluorine solar cell notacorias such as PVF or PVDF is adopted to be limited by foreign Fu Mo manufacturers for a long time, its notacoria manufacturing cost remains high, and be applicable to the high-quality tackiness agent that fluorine film and PET bond and mostly be external only a few manufacturer technical monopoly, be difficult to import.And more domestic notacoria manufacturing enterprises can only adopt some common urethane, epoxy or acrylic tackifiers, these tackiness agent are easily aging, and performance cannot meet the life requirement of 25 years.
And application type notacoria mainly uses fluoro coatings, fluoro coatings is used widely in the every field of building, chemical industry, electric appliance and electronic industry, mechanical industry, aerospace industries, household supplies due to the performance of its excellence, become after acrylic coating, polyurethane coating, the contour performance coating of organosilicon coating, the coating variety that over-all properties is the highest.At present, Application comparison widely fluorine resin coating mainly contains PVDF, PCTFE, PTFE three major types type, and after the Ye Shiji U.S. of China, Japan, the 3rd has fluorocarbon coating synthetic technology and realize the country of industrialization.Fluorocarbon coating is widely used in the surfacecti proteon of bridge, mansion, railway, communications facility, and subjected to the outdoor ordeal of more than 40 years, shows splendid weather resistance.Therefore, fluorocarbon coating is applied to the exploitation of solar cell notacoria, thus realize not using tackiness agent and the low-cost high-quality application type notacoria product with excellent long-term weatherability performance is feasible, be also the only way of back membrane material development from now on and production domesticization.But because fluoro coatings uses the molecule of tetrafluoroethylene or polyvinylidene difluoride (PVDF) to disperse in a solvent together with base resin and formed.By solvent evaporates during use, fluoroplastics particle and base resin are solidificated in protected object surface, and base resin can be cross-linked and also can not be cross-linked.Fluoroplastics itself are dispersed in base resin in granular form, are not in contact with each other mutually.Steam or ultraviolet cast the first stone base resin between fluoroplastics particle, cause it to degrade very soon.Base resin is epoxy resin, acrylate resin or urethane resin, and its weathering resistance is far worse than fluoroplastics.Itself be polar resin, because molecular chain is comparatively complicated, the crystallinity of resin is low, so its permeability rate is also higher.Steam can attack PET film in lower floor by the base resin in coating and the fine cracks in coating, and PET is degraded cracking very soon, and makes this kind of backboard serious cracking when strong hydrothermal aging.Such as: Chinese Patent Application No. CN201310095115.9 and application number CN201310534583.1, all there are the problems referred to above in this two pieces patent.In view of above-mentioned defect, developing a kind of fluoro coatings with the low cost of high water vapor rejection performance, is direction and the trend of the exploitation of current notacoria and technical development.
Summary of the invention
The object of the present invention is to provide a kind of high water vapor rejection PCTFE coating and preparation method thereof, this coating is avoided using tackiness agent, having higher integrated degree and have excellent long-term weatherability performance simultaneously in the preparation of backboard.
To achieve these goals, the invention provides a kind of high water vapor rejection PCTFE coating, obtained by the raw material of following weight part: PCTFE50-60 part, methyl acrylate 10-14 part, trifluoroethyl methacrylate 13-17 part, tolylene diisocyanate 5-9 part, Hydroxyethyl acrylate 7-11 part, Diisopropyl azodicarboxylate 4-8 part, triethylamine 3-6 part, olefin(e) acid 4-8 part, dipropylene glycol methyl ether 5-9 part, flow agent 2-5 part, KH550 2-5 part, polydimethylsiloxane 3-6 part, poly-3 methyl thiophene 1-4 part.
Screening formulation is obtained by the raw material of following weight part: obtained by the raw material of following weight part: PCTFE50 part, methyl acrylate 10 parts, trifluoroethyl methacrylate 13 parts, tolylene diisocyanate 5 parts, Hydroxyethyl acrylate 7 parts, Diisopropyl azodicarboxylate 4 parts, triethylamine 3 parts, olefin(e) acid 4 parts, dipropylene glycol methyl ether 5 parts, flow agent 2 parts, KH550 2 parts, polydimethylsiloxane 3 parts, poly-3 methyl thiophene 1 part.
Screening formulation is obtained by the raw material of following weight part: PCTFE60 part, methyl acrylate 14 parts, trifluoroethyl methacrylate 17 parts, tolylene diisocyanate 9 parts, Hydroxyethyl acrylate 11 parts, Diisopropyl azodicarboxylate 8 parts, triethylamine 6 parts, olefin(e) acid 8 parts, dipropylene glycol methyl ether 9 parts, flow agent 5 parts, KH550 5 parts, polydimethylsiloxane 6 parts, poly-3 methyl thiophene 4 parts.
Screening formulation is obtained by the raw material of following weight part: PCTFE53 part, methyl acrylate 11 parts, trifluoroethyl methacrylate 14 parts, tolylene diisocyanate 6 parts, Hydroxyethyl acrylate 8 parts, Diisopropyl azodicarboxylate 5 parts, triethylamine 4 parts, olefin(e) acid 5 parts, dipropylene glycol methyl ether 6 parts, flow agent 3 parts, KH550 3 parts, polydimethylsiloxane 4 parts, poly-3 methyl thiophene 2 parts.
Screening formulation is obtained by the raw material of following weight part: PCTFE57 part, methyl acrylate 13 parts, trifluoroethyl methacrylate 16 parts, tolylene diisocyanate 8 parts, Hydroxyethyl acrylate 9 parts, Diisopropyl azodicarboxylate 7 parts, triethylamine 5 parts, olefin(e) acid 6 parts, dipropylene glycol methyl ether 7 parts, flow agent 4 parts, KH550 4 parts, polydimethylsiloxane 5 parts, poly-3 methyl thiophene 3 parts.
Described olefin(e) acid is vinylformic acid, methacrylic acid or undecylenic acid.
Described flow agent is propylene glycol methyl ether acetate.
The preparation method of high water vapor rejection PCTFE coating, comprises the following steps: take each raw material according to weight part ratio, adds in reactor, opens reactor and stir 2.5-3 hour at 80-88 DEG C, be then cooled to room temperature discharging, the product obtained.
The present invention has following beneficial effect: coating of the present invention has that good weatherability, water vapor barrier property are strong, the feature of high adhesive force, can form the excellent adhesion with the sealing material in solar module, particularly EVA.And production process of the present invention is simple, low production cost, environmental protection, is easy to transport and storage, is easy to suitability for industrialized production, has market using value.
Embodiment
embodiment 1
The high water vapor rejection PCTFE coating of the present embodiment, is obtained by the raw material of following weight part: PCTFE50 part, methyl acrylate 10 parts, trifluoroethyl methacrylate 13 parts, tolylene diisocyanate 5 parts, Hydroxyethyl acrylate 7 parts, Diisopropyl azodicarboxylate 4 parts, triethylamine 3 parts, olefin(e) acid 4 parts, dipropylene glycol methyl ether 5 parts, flow agent 2 parts, KH550 2 parts, polydimethylsiloxane 3 parts, poly-3 methyl thiophene 1 part.
Described olefin(e) acid is vinylformic acid.
Described flow agent is propylene glycol methyl ether acetate.
The high water vapor rejection PCTFE coating of the present embodiment, comprises the following steps: take each raw material according to weight part ratio, adds in reactor, opens reactor and stirs 2.5 hours at 88 DEG C, be then cooled to room temperature discharging, the product obtained.
embodiment 2
The high water vapor rejection PCTFE coating of the present embodiment, is obtained by the raw material of following weight part: PCTFE60 part, methyl acrylate 14 parts, trifluoroethyl methacrylate 17 parts, tolylene diisocyanate 9 parts, Hydroxyethyl acrylate 11 parts, Diisopropyl azodicarboxylate 8 parts, triethylamine 6 parts, olefin(e) acid 8 parts, dipropylene glycol methyl ether 9 parts, flow agent 5 parts, KH550 5 parts, polydimethylsiloxane 6 parts, poly-3 methyl thiophene 4 parts.
Described olefin(e) acid is methacrylic acid.
Described flow agent is propylene glycol methyl ether acetate.
The high water vapor rejection PCTFE coating of the present embodiment, comprises the following steps: take each raw material according to weight part ratio, adds in reactor, opens reactor and stirs 3 hours at 88 DEG C, be then cooled to room temperature discharging, the product obtained.
embodiment 3
The high water vapor rejection PCTFE coating of the present embodiment, is obtained by the raw material of following weight part: PCTFE53 part, methyl acrylate 11 parts, trifluoroethyl methacrylate 14 parts, tolylene diisocyanate 6 parts, Hydroxyethyl acrylate 8 parts, Diisopropyl azodicarboxylate 5 parts, triethylamine 4 parts, olefin(e) acid 5 parts, dipropylene glycol methyl ether 6 parts, flow agent 3 parts, KH550 3 parts, polydimethylsiloxane 4 parts, poly-3 methyl thiophene 2 parts.
Described olefin(e) acid is undecylenic acid.
Described flow agent is propylene glycol methyl ether acetate.
The high water vapor rejection PCTFE coating of the present embodiment, comprises the following steps: take each raw material according to weight part ratio, adds in reactor, opens reactor and stirs 2.5 hours at 80 DEG C, be then cooled to room temperature discharging, the product obtained.
embodiment 4
The high water vapor rejection PCTFE coating of the present embodiment, is obtained by the raw material of following weight part: PCTFE57 part, methyl acrylate 13 parts, trifluoroethyl methacrylate 16 parts, tolylene diisocyanate 8 parts, Hydroxyethyl acrylate 9 parts, Diisopropyl azodicarboxylate 7 parts, triethylamine 5 parts, olefin(e) acid 6 parts, dipropylene glycol methyl ether 7 parts, flow agent 4 parts, KH550 4 parts, polydimethylsiloxane 5 parts, poly-3 methyl thiophene 3 parts.
Described olefin(e) acid is vinylformic acid.
Described flow agent is propylene glycol methyl ether acetate.
The high water vapor rejection PCTFE coating of the present embodiment, comprises the following steps: take each raw material according to weight part ratio, adds in reactor, opens reactor and stirs 3 hours at 80 DEG C, be then cooled to room temperature discharging, the product obtained.
embodiment 5
By coating obtained for embodiment 1-4, by the sample preparation of HG/T-3792-2005 standard and detection perform, detected result is as shown in table 1.
The coating detected result that table 1 embodiment of the present invention is obtained
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Hardness (pencil hardness) | 3H | 3H | 3H | 3H |
| Sticking power (MPa) | 10 | 12 | 10 | 11 |
| Hydrophobic angle, ° | 125 | 118 | 119 | 128 |
| Shock strength, (positive and negative impact) cm | 50 | 49 | 50 | 53 |
| Acid resistance (10% sulfuric acid, normal temperature, 250h) | Unchanged | Unchanged | Unchanged | Unchanged |
| Alkali resistance (10% sodium hydroxide, normal temperature, 250h) | Unchanged | Unchanged | Unchanged | Unchanged |
| Salt fog resistance, 1000h | 15.35 | 15.25 | 15.76 | 15.89 |
| Artificial weathering, 1000h | Unchanged | Unchanged | Unchanged | Unchanged |
Simultaneously also by the coating of each embodiment above-mentioned, respectively according to national QB/T2730.1-2005, QB/T2603-2007, GB/T13217.2-2009, GB/T 18724-2008/ISO 2836:2004 standard detection.To the quality inspection index of coating, as proportion, pH value, surface tension, viscosity, specific conductivity etc. detect, detected result all meets national GB.
Claims (8)
1. high water vapor rejection PCTFE coating, is characterized in that being obtained by the raw material of following weight part: PCTFE50-60 part, methyl acrylate 10-14 part, trifluoroethyl methacrylate 13-17 part, tolylene diisocyanate 5-9 part, Hydroxyethyl acrylate 7-11 part, Diisopropyl azodicarboxylate 4-8 part, triethylamine 3-6 part, olefin(e) acid 4-8 part, dipropylene glycol methyl ether 5-9 part, flow agent 2-5 part, KH550 2-5 part, polydimethylsiloxane 3-6 part, poly-3 methyl thiophene 1-4 part.
2. according to the high water vapor rejection PCTFE coating described in claim 1, it is characterized in that being obtained by the raw material of following weight part: PCTFE50 part, methyl acrylate 10 parts, trifluoroethyl methacrylate 13 parts, tolylene diisocyanate 5 parts, Hydroxyethyl acrylate 7 parts, Diisopropyl azodicarboxylate 4 parts, triethylamine 3 parts, olefin(e) acid 4 parts, dipropylene glycol methyl ether 5 parts, flow agent 2 parts, KH550 2 parts, polydimethylsiloxane 3 parts, poly-3 methyl thiophene 1 part.
3. according to the high water vapor rejection PCTFE coating described in claim 1, it is characterized in that being obtained by the raw material of following weight part: PCTFE60 part, methyl acrylate 14 parts, trifluoroethyl methacrylate 17 parts, tolylene diisocyanate 9 parts, Hydroxyethyl acrylate 11 parts, Diisopropyl azodicarboxylate 8 parts, triethylamine 6 parts, olefin(e) acid 8 parts, dipropylene glycol methyl ether 9 parts, flow agent 5 parts, KH550 5 parts, polydimethylsiloxane 6 parts, poly-3 methyl thiophene 4 parts.
4. according to the high water vapor rejection PCTFE coating described in claim 1, it is characterized in that being obtained by the raw material of following weight part: PCTFE53 part, methyl acrylate 11 parts, trifluoroethyl methacrylate 14 parts, tolylene diisocyanate 6 parts, Hydroxyethyl acrylate 8 parts, Diisopropyl azodicarboxylate 5 parts, triethylamine 4 parts, olefin(e) acid 5 parts, dipropylene glycol methyl ether 6 parts, flow agent 3 parts, KH550 3 parts, polydimethylsiloxane 4 parts, poly-3 methyl thiophene 2 parts.
5. according to the high water vapor rejection PCTFE coating described in claim 1, it is characterized in that being obtained by the raw material of following weight part: PCTFE57 part, methyl acrylate 13 parts, trifluoroethyl methacrylate 16 parts, tolylene diisocyanate 8 parts, Hydroxyethyl acrylate 9 parts, Diisopropyl azodicarboxylate 7 parts, triethylamine 5 parts, olefin(e) acid 6 parts, dipropylene glycol methyl ether 7 parts, flow agent 4 parts, KH550 4 parts, polydimethylsiloxane 5 parts, poly-3 methyl thiophene 3 parts.
6., according to the high water vapor rejection PCTFE coating described in claim 1, it is characterized in that described olefin(e) acid is vinylformic acid, methacrylic acid or undecylenic acid.
7., according to the high water vapor rejection PCTFE coating described in claim 1, it is characterized in that described flow agent is propylene glycol methyl ether acetate.
8. the preparation method of the high water vapor rejection PCTFE coating according to any one of claim 1-7, it is characterized in that comprising the following steps: take each raw material according to weight part ratio, add in reactor, open reactor and stir 2.5-3 hour at 80-88 DEG C, then room temperature discharging is cooled to, the product obtained.
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| CN106024952A (en) * | 2016-07-27 | 2016-10-12 | 无锡中洁能源技术有限公司 | Solar energy backboard with transparent coating layer |
| CN111218200A (en) * | 2020-01-17 | 2020-06-02 | 北京信为兢创科技有限公司 | High-wear-resistance moisture-proof coating composition and preparation method and application thereof |
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