CN104449312A - High-wear-resistance PVDF (Polyvinylidene Fluoride) coating for solar cell back sheet and preparation method of PVDF coating - Google Patents
High-wear-resistance PVDF (Polyvinylidene Fluoride) coating for solar cell back sheet and preparation method of PVDF coating Download PDFInfo
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Abstract
The invention discloses a high-wear-resistance PVDF (Polyvinylidene Fluoride) coating for a solar cell back sheet and a preparation method of the PVDF coating. The coating is prepared from the following raw materials in parts by weight: 80-85 parts of PVDF, 10-14 parts of methyl methacrylate, 4-8 parts of dodecafluoroheptyl methacrylate, 5-9 parts of diphenylmethane diisocyanate, 13-17 parts of hydroxyethyl methacrylate, 5-9 parts of benzoyl peroxide, 3-6 parts of dibutyltin dilaurate, 7-11 parts of olefinic acid, 3-6 parts of a flatting agent, 3-8 parts of dipropylene glycol monomethyl ether, 2-5 parts of zirconium oxide, 4-8 parts of polydimethylsiloxane and 2-4 parts of N-methyl-2-pyrrolidone. The coating has the advantages of good weather resistance and water vapor barrier property as well as better wear resistance and adhesion force and the preparation method has the advantages of simple production process, low production cost, environment friendliness, easiness in transportation, storage and industrial production and has market application values.
Description
Technical field
The present invention relates to solar cell backboard high-wearing feature PVDF 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.
Backboard conventional at present has various structures, can be divided into double-side fluorine back film (as TPT), the fluorine-containing notacoria of one side (as TPE), not fluorine-containing notacoria (how being composited gluing for multilayer PET by tackiness agent) and coating notacoria four class.The moisture of trace and wherein about the research of not fluorine-containing notacoria, research shows, containing a large amount of ester groups in PET molecular backbone chain, has good affinity with glassware for drinking water, easily produces water plasticising, even if also can cause the degraded of molecular backbone chain simultaneously.The change of PET aging resistance in hydrothermal aging process affects by three factors: degree of crystallinity, water plasticising, hydrolysis, each factor from start to finish all in action, different environment and in the different stages various Different factor play a leading role.The aging initial stage, factor is taken in crystallization as the leading factor, it increases Young's modulus, maximum tensile stress, but material is become fragile, and reduces shock strength, then water plasticising becomes principal element, it makes toughness of material increase, but very fast hydrolysis reaction rises to principal element, and it causes PET macromolecular chain to rupture, molecular weight and molecular weight, thus the destruction causing mechanical property.The rising of temperature then can make said process obviously accelerate, and therefore water and heat are the major causes causing PET physical and mechanical properties sharply to decline.In addition, uv-radiation also can make the molecular weight of PET, strength and elongation significantly declines, and degree of crystallinity increases, thus makes material embrittlement.Therefore, by tackiness agent gluing for the multilayer PET not fluorine-containing notacoria be composited just cannot be met from material self character environmental test and the service requirementss such as damp and hot, xeothermic, the ultraviolet of commercial crystal silicon solar battery assembly 25 years, also just be difficult to the encapsulation being suitable for crystal silicon solar battery assembly.
The fluorine material on fluorine-containing notacoria surface due to fluorine element electronegativity large, van der Waals radius is little, carbon-fluorine bond bond energy extremely strong (up to 485KJ/mol), and its uniqueness fluoridize that volution rodlike molecule in chain one-piece construction is tight, firm, surface smoothing, make the properties such as the weathering resistance of fluoro-resin, thermotolerance, resistant of high or low temperature and chemical proofing all very superior.The excellent specific property of fluoro-resin makes fluorine material (fluorine film or fluorocarbon coating) have excellent weathering performance, can ensure the reliability that long-term outdoor uses.But fluoro-resin has outstanding not viscosity, limits the application that it is industrial.It is fabulous non-stick material, and this performance makes again the surface adhesive of it and other objects very difficult.Mostly fluorine-containing 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 to be composited.And differ due to the quality level of tackiness agent, 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.
Fluorocarbon coating is through the fast development of decades, be used widely in the every field of building, chemical industry, electric appliance and electronic industry, mechanical industry, aerospace industries, household supplies, 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 excellent long-term weatherability and steam gas barrier properties, 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 solar cell backboard high-wearing feature PVDF coating and preparation method thereof, this coating has good wear resistance and sticking power while having excellent long-term weatherability performance.
To achieve these goals, the invention provides a kind of solar cell backboard high-wearing feature PVDF coating, obtained by the raw material of following weight part: PVDF80-85 part, methyl methacrylate 10-14 part, dodecafluoroheptyl methacrylate 4-8 part, diphenylmethanediisocyanate 5-9 part, hydroxyethyl methylacrylate 13-17 part, dibenzoyl peroxide 5-9 part, dibutyl tin dilaurate 3-6 part, olefin(e) acid 7-11 part, flow agent 3-6 part, dipropylene glycol methyl ether 3-8 part, zirconium white 2-5 part, polydimethylsiloxane 4-8 part, METHYLPYRROLIDONE 2-4 part.
Screening formulation is obtained by the raw material of following weight part: PVDF80 part, methyl methacrylate 10 parts, dodecafluoroheptyl methacrylate 4 parts, diphenylmethanediisocyanate 5 parts, hydroxyethyl methylacrylate 13 parts, dibenzoyl peroxide 5 parts, dibutyl tin dilaurate 3 parts, olefin(e) acid 7 parts, flow agent 3 parts, dipropylene glycol methyl ether 3 parts, zirconium white 2 parts, polydimethylsiloxane 4 parts, METHYLPYRROLIDONE 2 parts.
Screening formulation is obtained by the raw material of following weight part: PVDF85 part, methyl methacrylate 14 parts, dodecafluoroheptyl methacrylate 8 parts, diphenylmethanediisocyanate 9 parts, hydroxyethyl methylacrylate 17 parts, dibenzoyl peroxide 9 parts, dibutyl tin dilaurate 6 parts, olefin(e) acid 11 parts, flow agent 6 parts, dipropylene glycol methyl ether 8 parts, zirconium white 5 parts, polydimethylsiloxane 8 parts, METHYLPYRROLIDONE 4 parts.
Screening formulation is obtained by the raw material of following weight part: PVDF82 part, methyl methacrylate 12 parts, dodecafluoroheptyl methacrylate 5 parts, diphenylmethanediisocyanate 6 parts, hydroxyethyl methylacrylate 14 parts, dibenzoyl peroxide 6 parts, dibutyl tin dilaurate 4 parts, olefin(e) acid 8 parts, flow agent 4 parts, dipropylene glycol methyl ether 4 parts, zirconium white 3 parts, polydimethylsiloxane 5 parts, METHYLPYRROLIDONE 3 parts.
Screening formulation is obtained by the raw material of following weight part: PVDF84 part, methyl methacrylate 13 parts, dodecafluoroheptyl methacrylate 7 parts, diphenylmethanediisocyanate 7 parts, hydroxyethyl methylacrylate 15 parts, dibenzoyl peroxide 8 parts, dibutyl tin dilaurate 5 parts, olefin(e) acid 9 parts, flow agent 5 parts, dipropylene glycol methyl ether 7 parts, zirconium white 4 parts, polydimethylsiloxane 7 parts, METHYLPYRROLIDONE 3 parts.
Described olefin(e) acid is vinylformic acid, methacrylic acid or undecylenic acid.
Described flow agent is propylene glycol methyl ether acetate.
The solar cell backboard preparation method of high-wearing feature PVDF coating, comprise the following steps: according to weight part ratio, PVDF, methyl methacrylate, dodecafluoroheptyl methacrylate, hydroxyethyl methylacrylate, dibutyl tin dilaurate and dipropylene glycol methyl ether are mixed, be heated with stirring to 80 ~ 85 DEG C and maintain 1h; Then diphenylmethanediisocyanate, dibenzoyl peroxide, polydimethylsiloxane, olefin(e) acid and KH560 is added, then insulation reaction 2h; Finally add flow agent, METHYLPYRROLIDONE, then after insulation reaction 3h, be cooled to room temperature discharging, the product obtained;
The present invention has following beneficial effect: coating of the present invention also has good wear resistance and sticking power while having good weathering resistance and water vapor barrier property again, and production technique of the present invention is simple, low production cost, environmental protection, be easy to transport and storage, be easy to suitability for industrialized production, there is market using value.
Embodiment
embodiment 1
The solar cell backboard high-wearing feature PVDF coating of the present embodiment, is obtained by the raw material of following weight part: PVDF80 part, methyl methacrylate 10 parts, dodecafluoroheptyl methacrylate 4 parts, diphenylmethanediisocyanate 5 parts, hydroxyethyl methylacrylate 13 parts, dibenzoyl peroxide 5 parts, dibutyl tin dilaurate 3 parts, olefin(e) acid 7 parts, flow agent 3 parts, dipropylene glycol methyl ether 3 parts, zirconium white 2 parts, polydimethylsiloxane 4 parts, METHYLPYRROLIDONE 2 parts.
Described olefin(e) acid is vinylformic acid.
Described flow agent is propylene glycol methyl ether acetate.
The solar cell backboard high-wearing feature PVDF coating of the present embodiment, comprise the following steps: according to weight part ratio, PVDF, methyl methacrylate, dodecafluoroheptyl methacrylate, hydroxyethyl methylacrylate, dibutyl tin dilaurate and dipropylene glycol methyl ether are mixed, be heated with stirring to 80 ~ 85 DEG C and maintain 1h; Then diphenylmethanediisocyanate, dibenzoyl peroxide, polydimethylsiloxane, olefin(e) acid and KH560 is added, then insulation reaction 2h; Finally add flow agent, METHYLPYRROLIDONE, then after insulation reaction 3h, be cooled to room temperature discharging, the product obtained;
embodiment 2
The solar cell backboard high-wearing feature PVDF coating of the present embodiment, is obtained by the raw material of following weight part: PVDF85 part, methyl methacrylate 14 parts, dodecafluoroheptyl methacrylate 8 parts, diphenylmethanediisocyanate 9 parts, hydroxyethyl methylacrylate 17 parts, dibenzoyl peroxide 9 parts, dibutyl tin dilaurate 6 parts, olefin(e) acid 11 parts, flow agent 6 parts, dipropylene glycol methyl ether 8 parts, zirconium white 5 parts, polydimethylsiloxane 8 parts, METHYLPYRROLIDONE 4 parts.
Described olefin(e) acid is methacrylic acid.
Described flow agent is propylene glycol methyl ether acetate.
The solar cell backboard high-wearing feature PVDF coating of the present embodiment, comprise the following steps: according to weight part ratio, PVDF, methyl methacrylate, dodecafluoroheptyl methacrylate, hydroxyethyl methylacrylate, dibutyl tin dilaurate and dipropylene glycol methyl ether are mixed, be heated with stirring to 80 ~ 85 DEG C and maintain 1h; Then diphenylmethanediisocyanate, dibenzoyl peroxide, polydimethylsiloxane, olefin(e) acid and KH560 is added, then insulation reaction 2h; Finally add flow agent, METHYLPYRROLIDONE, then after insulation reaction 3h, be cooled to room temperature discharging, the product obtained;
embodiment 3
The solar cell backboard high-wearing feature PVDF coating of the present embodiment, is obtained by the raw material of following weight part: PVDF82 part, methyl methacrylate 12 parts, dodecafluoroheptyl methacrylate 5 parts, diphenylmethanediisocyanate 6 parts, hydroxyethyl methylacrylate 14 parts, dibenzoyl peroxide 6 parts, dibutyl tin dilaurate 4 parts, olefin(e) acid 8 parts, flow agent 4 parts, dipropylene glycol methyl ether 4 parts, zirconium white 3 parts, polydimethylsiloxane 5 parts, METHYLPYRROLIDONE 3 parts.
Described olefin(e) acid is undecylenic acid.
Described flow agent is propylene glycol methyl ether acetate.
The solar cell backboard high-wearing feature PVDF coating of the present embodiment, comprise the following steps: according to weight part ratio, PVDF, methyl methacrylate, dodecafluoroheptyl methacrylate, hydroxyethyl methylacrylate, dibutyl tin dilaurate and dipropylene glycol methyl ether are mixed, be heated with stirring to 80 ~ 85 DEG C and maintain 1h; Then diphenylmethanediisocyanate, dibenzoyl peroxide, polydimethylsiloxane, olefin(e) acid and KH560 is added, then insulation reaction 2h; Finally add flow agent, METHYLPYRROLIDONE, then after insulation reaction 3h, be cooled to room temperature discharging, the product obtained;
embodiment 4
The solar cell backboard high-wearing feature PVDF coating of the present embodiment, is obtained by the raw material of following weight part: PVDF84 part, methyl methacrylate 13 parts, dodecafluoroheptyl methacrylate 7 parts, diphenylmethanediisocyanate 7 parts, hydroxyethyl methylacrylate 15 parts, dibenzoyl peroxide 8 parts, dibutyl tin dilaurate 5 parts, olefin(e) acid 9 parts, flow agent 5 parts, dipropylene glycol methyl ether 7 parts, zirconium white 4 parts, polydimethylsiloxane 7 parts, METHYLPYRROLIDONE 3 parts.
Described olefin(e) acid is vinylformic acid.
Described flow agent is propylene glycol methyl ether acetate.
The solar cell backboard high-wearing feature PVDF coating of the present embodiment, comprise the following steps: according to weight part ratio, PVDF, methyl methacrylate, dodecafluoroheptyl methacrylate, hydroxyethyl methylacrylate, dibutyl tin dilaurate and dipropylene glycol methyl ether are mixed, be heated with stirring to 80 ~ 85 DEG C and maintain 1h; Then diphenylmethanediisocyanate, dibenzoyl peroxide, polydimethylsiloxane, olefin(e) acid and KH560 is added, then insulation reaction 2h; Finally add flow agent, METHYLPYRROLIDONE, then after insulation reaction 3h, be 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 | 11 | 10 | 12 |
| Hydrophobic angle, ° | 125 | 126 | 129 | 128 |
| Shock strength, (positive and negative impact) cm | 51 | 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 | 15.15 | 15.15 | 15.36 | 15.29 |
| 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. solar cell backboard high-wearing feature PVDF coating, is characterized in that being obtained by the raw material of following weight part: PVDF80-85 part, methyl methacrylate 10-14 part, dodecafluoroheptyl methacrylate 4-8 part, diphenylmethanediisocyanate 5-9 part, hydroxyethyl methylacrylate 13-17 part, dibenzoyl peroxide 5-9 part, dibutyl tin dilaurate 3-6 part, olefin(e) acid 7-11 part, flow agent 3-6 part, dipropylene glycol methyl ether 3-8 part, zirconium white 2-5 part, polydimethylsiloxane 4-8 part, METHYLPYRROLIDONE 2-4 part.
2. according to the high-wearing feature PVDF coating of the solar cell backboard described in claim 1, it is characterized in that being obtained by the raw material of following weight part: PVDF80 part, methyl methacrylate 10 parts, dodecafluoroheptyl methacrylate 4 parts, diphenylmethanediisocyanate 5 parts, hydroxyethyl methylacrylate 13 parts, dibenzoyl peroxide 5 parts, dibutyl tin dilaurate 3 parts, olefin(e) acid 7 parts, flow agent 3 parts, dipropylene glycol methyl ether 3 parts, zirconium white 2 parts, polydimethylsiloxane 4 parts, METHYLPYRROLIDONE 2 parts.
3. according to the high-wearing feature PVDF coating of the solar cell backboard described in claim 1, it is characterized in that being obtained by the raw material of following weight part: PVDF85 part, methyl methacrylate 14 parts, dodecafluoroheptyl methacrylate 8 parts, diphenylmethanediisocyanate 9 parts, hydroxyethyl methylacrylate 17 parts, dibenzoyl peroxide 9 parts, dibutyl tin dilaurate 6 parts, olefin(e) acid 11 parts, flow agent 6 parts, dipropylene glycol methyl ether 8 parts, zirconium white 5 parts, polydimethylsiloxane 8 parts, METHYLPYRROLIDONE 4 parts.
4. according to the high-wearing feature PVDF coating of the solar cell backboard described in claim 1, it is characterized in that being obtained by the raw material of following weight part: PVDF82 part, methyl methacrylate 12 parts, dodecafluoroheptyl methacrylate 5 parts, diphenylmethanediisocyanate 6 parts, hydroxyethyl methylacrylate 14 parts, dibenzoyl peroxide 6 parts, dibutyl tin dilaurate 4 parts, olefin(e) acid 8 parts, flow agent 4 parts, dipropylene glycol methyl ether 4 parts, zirconium white 3 parts, polydimethylsiloxane 5 parts, METHYLPYRROLIDONE 3 parts.
5. according to the high-wearing feature PVDF coating of the solar cell backboard described in claim 1, it is characterized in that being obtained by the raw material of following weight part: PVDF84 part, methyl methacrylate 13 parts, dodecafluoroheptyl methacrylate 7 parts, diphenylmethanediisocyanate 7 parts, hydroxyethyl methylacrylate 15 parts, dibenzoyl peroxide 8 parts, dibutyl tin dilaurate 5 parts, olefin(e) acid 9 parts, flow agent 5 parts, dipropylene glycol methyl ether 7 parts, zirconium white 4 parts, polydimethylsiloxane 7 parts, METHYLPYRROLIDONE 3 parts.
6., according to the high-wearing feature PVDF coating of the solar cell backboard 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-wearing feature PVDF coating of the solar cell backboard described in claim 1, it is characterized in that described flow agent is propylene glycol methyl ether acetate.
8. the preparation method of high-wearing feature PVDF coating of the solar cell backboard according to any one of claim 1-7, it is characterized in that comprising the following steps: according to weight part ratio, PVDF, methyl methacrylate, dodecafluoroheptyl methacrylate, hydroxyethyl methylacrylate, dibutyl tin dilaurate and dipropylene glycol methyl ether are mixed, be heated with stirring to 80 ~ 85 DEG C and maintain 1h; Then diphenylmethanediisocyanate, dibenzoyl peroxide, polydimethylsiloxane, olefin(e) acid and KH560 is added, then insulation reaction 2h; Finally add flow agent, METHYLPYRROLIDONE, then after insulation reaction 3h, be cooled to room temperature discharging, the product obtained.
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| CN201410644398.2A CN104449312A (en) | 2014-11-14 | 2014-11-14 | High-wear-resistance PVDF (Polyvinylidene Fluoride) coating for solar cell back sheet and preparation method of PVDF coating |
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| CN201410644398.2A CN104449312A (en) | 2014-11-14 | 2014-11-14 | High-wear-resistance PVDF (Polyvinylidene Fluoride) coating for solar cell back sheet and preparation method of PVDF coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106085174A (en) * | 2016-06-12 | 2016-11-09 | 雄子（上海）新材料科技有限公司 | polyurethane coating and preparation method thereof |
| CN110452336A (en) * | 2019-08-15 | 2019-11-15 | 宁德卓高新材料科技有限公司 | The method for preparing modified partial fluorine ethylene polymer powder |
-
2014
- 2014-11-14 CN CN201410644398.2A patent/CN104449312A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106085174A (en) * | 2016-06-12 | 2016-11-09 | 雄子（上海）新材料科技有限公司 | polyurethane coating and preparation method thereof |
| CN110452336A (en) * | 2019-08-15 | 2019-11-15 | 宁德卓高新材料科技有限公司 | The method for preparing modified partial fluorine ethylene polymer powder |
| CN110452336B (en) * | 2019-08-15 | 2021-10-01 | 宁德卓高新材料科技有限公司 | Method for preparing modified vinylidene fluoride polymer powder |
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