CN103595342A - VCM thin film for solar light concentration and application thereof and solar photovoltaic cell - Google Patents
VCM thin film for solar light concentration and application thereof and solar photovoltaic cell Download PDFInfo
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- CN103595342A CN103595342A CN201210287513.6A CN201210287513A CN103595342A CN 103595342 A CN103595342 A CN 103595342A CN 201210287513 A CN201210287513 A CN 201210287513A CN 103595342 A CN103595342 A CN 103595342A
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Abstract
The invention discloses a VCM thin film for solar light concentration and application thereof and a solar photovoltaic cell. The VCM thin film for solar light concentration sequentially comprises a surface hardening coating, a transparent film layer, a light transmittance enhancing coating, a vacuum metallization clad layer, an adhesive layer and a base film layer. The surface hardening coating is a polyurethane ultraviolet curing coating with the hardness which is equivalent to more than pencil hardness 2H and the thickness of more than 0.8 mm. The VCM thin film for solar light concentration in the invention is low in cost, high in solar radiation energy and reflecting efficiency, and is capable of greatly reducing the usage amount of solar photovoltaic cell packs and thus the cost is saved. Simultaneously, the manufacturing cost of the VCM thin film for solar light concentration is obviously much lower than that of similar products, and the VCM thin film for solar light concentration has very wide application prospect.
Description
Technical field
The present invention relates to VCM film and application thereof for a kind of Salar light-gathering, the invention still further relates to the solar-energy photo-voltaic cell that contains this VCM film.
Background technology
Solar energy is inexhaustible resource.The advantage of solar energy is that source is free, and can not produce greenhouse gas, and with other forms of regenerative resource, as wind energy is compared, solar energy is originate the abundantest and the most stable energy.Utilizing solar energy to carry out cheap generating is one of emphasis problem of new forms of energy research, and its method mainly contains two kinds: a kind of is solar energy to be transferred to heat energy generate electricity, and another kind is photovoltaic generation.Photovoltaic generation has been developed the multiple semiconductor optoelectronic batteries such as silicon, GaAs, especially along with the maturation of monocrystalline silicon and polysilicon photocell technology, and because its output is large, relative other photocell of cost performance more has superiority, thereby make its application surface the most extensive.
At present, what monocrystalline silicon/polysilicon photovoltaic cells was mainly used is flat plate array formula, and according to research, its energy conversion efficiency only has 15～19%.The main cause that its energy conversion efficiency is not high is that solar radiation energy is directly accepted on its surface, because irradiated energy density does not reach the optimum efficiency of unit are photovoltaic cell, thereby cause the energy conversion efficiency of photovoltaic cell always in reduced levels.And the production of monocrystalline silicon/polysilicon belongs to highly energy-consuming, high pollution industry, the unit cost of production is higher, makes the all-round popularization of solar energy power generating industry and use be subject to restriction greatly and restriction.Therefore, if invent a kind of device or material cheaply, can realize and can carry out high-efficiency reflective and focusing to solar radiation simultaneously, just can realize improving and be irradiated to the energy per unit area density on monocrystalline silicon/polysilicon photovoltaic cells, must greatly improve the energy conversion efficiency of monocrystalline silicon/polysilicon photovoltaic cells, greatly reduce the use amount of photovoltaic cell, and can reduce from demand source the consumption of photovoltaic cell to monocrystalline silicon/polysilicon, finally alleviate energy resource consumption and environmental pollution.There are documents and materials to show, concentrator solar cell field in 2005, Japan sharp studies the experiment concentration solar generating machine of successful light concentrating times 500, conversion efficiency 36%, and U.S. spectrolab studies successful light concentrating times 170, conversion efficiency reaches 37.2% experiment concentration solar generating unit, (" a kind of novel solar energy light gathering device ", Wang Ziqiang, < < SOLARENERGY > >, 2008,2).
For this new technical field, all carried out at present both at home and abroad having the exploitation of the concentrator of this type of performance, but in these technology application, the carrier that plays optically focused effect generally adopts toroidal lens or has carried out bend glass or metallic object that metal coating surface is processed.First aspect, because the more difficult acquisition of flatness of the coat of metal basal plane of these curved face objects makes them after having carried out coat of metal processing, in fact to solar radiation energy reflection efficiency not high (only 80% left and right); Second aspect, carries out to these objects that the efficiency of coat of metal processing is low, processing cost is high; The third aspect, their coating is normally plated to surface by fine silver by ion sputtering, also causes it to manufacture processing cost quite high; Fourth aspect; because these curved bodies are from great; while causing practical application, supporting and solid mechanical are also must intensity enough; finally make that whole solar energy light-collecting battery structure is heavy, cost is high and be not easy to safeguard; actual application value is high and fail to form large-scale production always and actual drop into application (" solar photovoltaic spot light device technical progress "; vast stretch of wooded country is great, Zhang Xuemei, clock hero; < < SOLAR ENERGY > >; 2008,8).
Chinese patent application 200810001420.6 discloses a kind of reflective membrane, it selects 4～5 high transparent plastic films of thick PET to do base material, with vacuum coating equipment, at the double-face vacuum of base material, aluminize, of base material, be coated with on the face of aluminium film and be coated with oiliness pressure sensitive adhesive, end liner face is pasted up; At another of base material, be coated with organosilicon 101 glass resins that are added with 550 curing agent on the face of aluminium film with coating machine roller coat.More than the face coat hardness of this reflective membrane arrives 4H, reflecting rate can reach 85%, and reflective membrane can be used more than 3 years.This reflective membrane is generally used on solar cooker.Because its reflecting rate only can reach 85% left and right, be not therefore suitable for the optically focused purposes of solar-energy photo-voltaic cell.The condensing film of solar-energy photo-voltaic cell wishes that reflecting rate can reach more than 90%, only in this way could effectively reduce condensing film area, reduce the overall structure weight of Salar light-gathering cover, and realize the raising of photovoltaic cell conversion efficiency.
Summary of the invention
The coat of metal basal plane that technical problem to be solved by this invention has been to overcome existing concentrator is difficult to obtain flatness, preparation difficulty, efficiency is low, processing cost is high, structure is heavy, be not easy to maintenance, actual application value is low, thereby cause the low defect of monocrystalline silicon/polysilicon photovoltaic cells energy conversion efficiency, VCM film and application thereof for a kind of Salar light-gathering is provided.The present invention also provides and has contained the solar-energy photo-voltaic cell of VCM film for this Salar light-gathering.Salar light-gathering of the present invention significantly improves the reflection efficiency of the luminous energy from face direction, infrared ray energy with VCM film, can reach more than 92%, rub resistance, weather-resistant property are strong, also there is excellent anti-ultraviolet function simultaneously, anti-oxidant, corrosion-resistant, greatly strengthen useful life, can be processed into easily the curved surface concentrator of various shapes.While being applied to solar-energy photo-voltaic cell, because solar energy reflection efficiency is high, therefore can greatly improve the solar energy conversion efficiency of solar-energy photo-voltaic cell, and significantly reducing the mechanical structure weight of photovoltaic cell, is the low-cost upgraded product of all kinds of Fresnel Lenses formula concentrators, parabola groove reflecting condenser, dish formula reflecting condenser.
The invention provides a kind of Salar light-gathering VCM film, it comprises that a hard surface coating, a transparent thin film layer, strengthen light transmittance coating, a vacuum metallization processes coating, an adhesive layer and a base membrane layer successively; Wherein, this hard surface coating (Hard-coating) is polyurethane ultraviolet curing dope layer (claiming again polyurethane UV dope layer), and it has the hardness being equivalent to more than pencil hardness 2H, and its thickness is more than 0.8 millimeter; This enhancing light transmittance coating is highlighted paint coatings.
In the present invention, described VCM is term of art.In household electric appliances, VCM is the abbreviation of " colorful laminated film-covered colored steel ", and covering material wherein is called " VCM film ", also can be described as " compound color film ".
Wherein, this transparent membrane can be selected the conventional various transparent plastic films that use in this area, as pet film (being called for short PET film) or polyvinyl chloride film (being called for short PVC film) etc., it is preferably biaxial tension pet film (being called for short BOPET film).The thickness of this transparent thin film layer is preferably 12～50 microns, is more preferably 23～36 microns.The light transmittance of this transparent membrane is preferably more than 90%.The mist degree of this transparent membrane is preferably below 2.0%.
Wherein, the thickness of this hard surface coating is preferably 0.8～3 micron, is more preferably 0.8～1.5 micron.It is not good that thickness is crossed thin surperficial hardening effect, and blocked up meeting causes cost to increase.The UV coating that the model that the preferred Kangnam Chemical of the polyurethane ultraviolet curing coating co.， Ltd company using in this hard surface coating produces is UV (KUV-001).
Wherein, this enhancing light transmittance coating by promote film surface smoothness, reduce plastic film surface irregularity and diffusion that light is caused, thereby play the object that enhanced film promotes directed visible ray light transmission.The visible light transmissivity of the saturating film of height of conventionally selling in the market generally, between 90～91%, can fail to 85% left and right to the reflectivity from face direction visible ray after reprocessabilty weares and teares, aluminizes.And after processing through enhancing light transmittance coating of the present invention, the visible light transmissivity of transparent membrane generally can rise between 93～95%, after vacuum metallization processes coating is processed, aluminium coated rises to 92～93% left and right to the reflectivity from face direction visible ray, reaches the object of practical application.The thickness of this enhancing light transmittance coating is preferably 0.8～3 micron, is more preferably 0.8～1.5 micron.
Wherein, the key of this vacuum metallization processes coating is to want to reach respectively more than 92% and 99% all solar energies from face direction and infrared ray energy reflection efficiency.For this reason, the thickness of this vacuum metallization processes coating is preferably 120～700 Ethylmercurichlorendimides, is more preferably 350～450 Ethylmercurichlorendimides.The target of this vacuum metallization processes coating can be selected conventional metal in VCM film for the Salar light-gathering of this area, is preferably gold, silver, copper, aluminium or nickel etc.This vacuum metallization processes coating adopts the method for this area routine to be plated in this enhancing light transmittance coating, as vacuum evaporation coating depositional mode or magnetron sputtering deposition mode.
Wherein, the coating dry measure of this adhesive layer is preferably 30 grams/m ± 2 grams/m.The material of this adhesive layer is for can select all conventional adhesive in this area.
Wherein, in the present invention, for this basement membrane, there is no special requirement, can select the basement membrane of various routines, as PET film, PVC film, BOPP, PE film or CPP etc.The thickness of this base membrane layer can be selected the basement membrane thickness of this area routine, is preferably 50～150 microns.
In the present invention, this Salar light-gathering comprises the steps: a surface-coated polyurethane ultraviolet curing coating at this transparent thin film layer by the preparation method of VCM film, after ultra-violet curing, form this hard surface coating, to another surface-coated of this transparent thin film layer, this strengthens light transmittance coating, again this enhancing light transmittance coating surface is carried out to the processing of vacuum metallization processes coating and obtain this vacuum metallization processes coating, adopt adhesive that this vacuum metallization processes coating and this basement membrane are fit together, slaking, cooling this adhesive layer of rear formation and this base membrane layer.
Wherein, the coating method that is coated with this polyurethane uv curing coating or enhancing light transmittance coating is all the coating method of this area routine, preferably adopts applicator roll to carry out.
Wherein, this vacuum metallization processes coating is processed the vacuum metallization processes coating processing mode that adopts this area routine, as vacuum evaporation coating depositional mode or magnetron sputtering deposition mode, the present invention preferably adopts the vacuum evaporation coating depositional mode processing method of recording in patent CN101503790.
Wherein, the coating dry measure of this enhancing light transmittance coating is preferably 0.8～5 gram/m, so that the thickness of this enhancing light transmittance coating is preferably 0.8～3 micron, is more preferably 0.8～1.5 micron.
Wherein, the conventional method that the method for slaking is this area, the temperature of slaking is preferably 60 ℃, the time of slaking is preferably more than 96 hours.
The present invention also provides the application in solar-energy photo-voltaic cell with VCM film of this Salar light-gathering.
The present invention also provides a kind of solar-energy photo-voltaic cell, and the material of its concentrator is Salar light-gathering of the present invention VCM film.
Except specified otherwise, the raw material the present invention relates to and reagent is commercially available obtaining all.
Meeting on the basis of this area general knowledge, above-mentioned each optimum condition, can combination in any, obtains the preferred embodiments of the invention.
Positive progressive effect of the present invention is:
1, Salar light-gathering of the present invention is low with VCM film cost, solar radiation energy reflection efficiency is high, thereby it is cost-saving significantly to reduce the use amount of solar-energy photo-voltaic cell group.
2, Salar light-gathering of the present invention VCM film, its reflection efficiency is better than current still some solar energy reflection concentrating devices in experiment and research both at home and abroad, but manufacturing cost is obviously much lower, and therefore, it must have boundless application prospect.
Accompanying drawing explanation
Fig. 1 is the structural representation of VCM film for the Salar light-gathering of embodiment of the present invention 1-3.
Embodiment
With embodiment, further illustrate the present invention below, but the present invention is not limited.
Embodiment 1
Fig. 1 is the structural representation of VCM film for the Salar light-gathering of embodiment 1.This Salar light-gathering comprises successively with VCM film: a hard surface coating (Hard-coating) 12, a transparent thin film layer 11, strengthen light transmittance coating 13, a vacuum metallization processes coating 14, an adhesive layer 21 and a base membrane layer 31.
Raw materials used in the preparation method of this Salar light-gathering with VCM film:
It is the BOPET film of 23 microns that the transparent membrane of transparent thin film layer is selected thickness, and former film light transmittance is more than 90%, and other physical performance indexs are to meet State Standard of the People's Republic of China GB/T16958-2008[packing biaxially oriented polyester film] requirement.
Surface cured coating selects buying from Kangnam Chemical co., Ltd, name of product: UV coating, the polyurethanes surface cured coating of model: UV (KUV-001), is stirred rear standby.
Strengthen the coating selection buying of light transmittance coating from the Tang Caicai of Shunde District, Foshan City film Science and Technology Ltd., name of product: highlighted coating, model: 3978-A, is stirred rear standby.
Basement membrane is selected the PVC film of 100 micron thickness, and physical performance index is to meet the requirement of the industry standard QB 1127-91 < < of People's Republic of China (PRC) flexible PVC printing thin film > >.The present embodiment is selected 100 microns of PVC films, and (buying is from Guangzhou company of Reynolds Li Te plastics Co., Ltd, name of product: PVC film, model: FS56099A).
Adhesive preparation method: select buying from Beijing Gaomeng Chemical Industry Co., Ltd, name of product: composite glue, the adhesive of model: YH2955, the ratio of 1:1 adds after ethyl acetate solvent first in mass ratio, is fully uniformly mixed; In the every 100 kilograms YH2955 adhesive that mixed ethyl acetate solvent, add the ratio of 20 kilograms of curing agent to add the curing agent of Beijing Gaomeng Chemical Industry Co., Ltd's production again, curing agent model: YH35, mixes rear standby.
The preparation method of VCM film for this Salar light-gathering:
(1) adopt Zhongshan City Songde Coating Machine Co., Ltd, model: the coating apparatus of ST1650-21 type, utilize the applicator roll of roller H2, to BOPET surface-coated surface cured coating, coating dry measure is 2 ± 0.2 grams/m (coatings complete after 1 ± 0.2 micron of the thickness of coating), after UV lamp dry solidification, naturally cooling, form hard surface coating.
(2) adopt Zhongshan City Songde Coating Machine Co., Ltd, model: the coating apparatus of ST1650-21 type, utilize roller number 200 object applicator rolls, another surface-coated to BOPET strengthens light transmittance coating, coating dry measure is 2 grams/m (coatings complete after 1 ± 0.2 micron of the thickness of coating), naturally cooling after coating, form and strengthen light transmittance coating.
(3) vacuum aluminum-coated in enhancing light transmittance coating, form vacuum metallization processes coating, the vacuum aluminum-coated method with reference to recording in CN101503790 is carried out.The vacuum metallization processes equipment of aluminizing adopts German Lai Bao photoelectricity technology corporation, Ltd., and PRO-M 2100 type packaging material web coating systems, vacuumize and reach high vacuum levels (10
-4～10
-5between mba), evaporation boat is preheated to 70%～90%(equipment and sets) between, aluminium wire transfer rate is controlled at 600～850mm/min, during device start winding speed>=3.5m/s, the equipment baffle plate of opening starts evaporation, and aluminium steam-condensation does not stop to cooling main hub surface on the enhancing light transmittance coating surface of the transparent BOPET film of reeling; The measured aluminum layer thickness of on-line measurement instrument of the on-line determination metallized film aluminum layer thickness measure of the change of providing for oneself according to aluminum-spraying machine in process is adjusted winding speed (speed is controlled at 5.0～11.0m/s), for guaranteeing to obtain reaching respectively more than 92% and 99% vacuum metallization processes film plating layer from face direction luminous energy, infrared ray energy reflection efficiency, the THICKNESS CONTROL of aluminium coated is in 400 ± 20 Ethylmercurichlorendimides (1 Ethylmercurichlorendimide=10
-10rice) between.After the former aluminium coated film of entire volume BOPET is produced, shutdowns, cooling evaporation boat, vacuum pumping, open a position and unload film, detection aluminum layer thickness, product evaporation finishes.
(4) adopt Zhongshan City Songde Coating Machine Co., Ltd, model: ST1650-21 type coating complex machine, with roller number, be the nick version applicator roll of H21 (coating dry measure is 30 grams/m), adhesive is first applied on vacuum metallization processes coating, cross after drying tunnel prebake, carry out compound with the shiny surface of PVC, entire volume product is compound complete after, compound good film volume should proceed to immediately and in the curing chamber of 60 ℃ of constant temperature, carry out the maturation process of 96 hours, maturation process is complete, and should to shift out immediately curing chamber naturally cooling, after cooling, can obtain described Salar light-gathering VCM film.
The Salar light-gathering of the present embodiment VCM film, according to State Standard of the People's Republic of China GB/T 2680-1994[building glass visible transmission ratio, the direct transmittance of sunlight, total solar energy transmittance, the ultraviolet (uv) transmission mensuration of relevant glass pane parameter when] record the direct reflectance mean value of sunlight between 93.5～95%, meet design requirement completely; According to State Standard of the People's Republic of China GB/T 6739 – 2006[hardness of film pencil determination methods] record hard surface coating hardness >=2H, meet the demands.
Embodiment 2
Same is example with Fig. 1, and embodiment 2 is described.This Salar light-gathering comprises successively with VCM film: a hard surface coating (Hard-coating) 12, a transparent thin film layer 11, strengthen light transmittance coating 13, a vacuum metallization processes coating 14, an adhesive layer 21 and a base membrane layer 31.
Raw materials used in the preparation method of this Salar light-gathering with VCM film:
It is the BOPET film of 12 microns that the transparent membrane of transparent thin film layer is selected thickness, and former film light transmittance is more than 90%, and other physical performance indexs are to meet State Standard of the People's Republic of China GB/T16958-2008[packing biaxially oriented polyester film] requirement.
Surface cured coating selects buying from Kangnam Chemical co., Ltd, name of product: UV coating, the polyurethanes surface cured coating of model: UV (KUV-001), is stirred rear standby.
Strengthen the coating selection buying of light transmittance coating from the Tang Caicai of Shunde District, Foshan City film Science and Technology Ltd., name of product: highlighted coating, model: 3978-A, is stirred rear standby.
Basement membrane is selected the not stretching polyethylene film of 150 micron thickness, and physical performance index is to meet the industry standard QB/T 1125-2000[of the People's Republic of China (PRC) not stretching polyethylene, polypropylene film] requirement be as the criterion.The present embodiment is selected 150 microns stretching polyethylene film is not commercially available and obtains.
Adhesive preparation method: select buying from Beijing Gaomeng Chemical Industry Co., Ltd, name of product: composite glue, the adhesive of model: YH2955, the ratio of 1:1 adds after ethyl acetate solvent first in mass ratio, is fully uniformly mixed; In the every 100 kilograms YH2955 adhesive that mixed ethyl acetate solvent, add the ratio of 20 kilograms of curing agent to add the curing agent of Beijing Gaomeng Chemical Industry Co., Ltd's production again, curing agent model: YH35, mixes rear standby.
The preparation method of VCM film for this Salar light-gathering:
(1) adopt Zhongshan City Songde Coating Machine Co., Ltd, model: the coating apparatus of ST1650-21 type, utilize the applicator roll of roller H2, to BOPET surface-coated surface cured coating, coating dry measure is 2 ± 0.2 grams/m (coatings complete after 1 ± 0.2 micron of the thickness of coating), after UV lamp dry solidification, naturally cooling, form hard surface coating.
(2) adopt Zhongshan City Songde Coating Machine Co., Ltd, model: the coating apparatus of ST1650-21 type, utilize roller number 200 object applicator rolls, another surface-coated to BOPET strengthens light transmittance coating, coating dry measure is 2 grams/m (coatings complete after 1 ± 0.2 micron of the thickness of coating), naturally cooling after coating, form and strengthen light transmittance coating.
(3) vacuum aluminum-coated in enhancing light transmittance coating, form vacuum metallization processes coating, the vacuum aluminum-coated method with reference to recording in CN101503790 is carried out.The vacuum metallization processes equipment of aluminizing adopts German Lai Bao photoelectricity technology corporation, Ltd., and PRO-M 2100 type packaging material web coating systems, vacuumize and reach high vacuum levels (10
-4～10
-5between mba), evaporation boat is preheated to 70%～90%(equipment and sets) between, aluminium wire transfer rate is controlled at 600～850mm/min, during device start winding speed>=3.5m/s, the equipment baffle plate of opening starts evaporation, and aluminium steam-condensation does not stop to cooling main hub surface on the enhancing light transmittance coating surface of the transparent BOPET film of reeling; The measured aluminum layer thickness of on-line measurement instrument of the on-line determination metallized film aluminum layer thickness measure of the change of providing for oneself according to aluminum-spraying machine in process is adjusted winding speed (speed is controlled at 5.0～11.0m/s), for guaranteeing to obtain reaching respectively more than 95% and 99% vacuum metallization processes film plating layer from face direction luminous energy, infrared ray energy reflection efficiency, the THICKNESS CONTROL of aluminium coated is in 400 ± 20 Ethylmercurichlorendimides (1 Ethylmercurichlorendimide=10
-10rice) between.After the former aluminium coated film of entire volume BOPET is produced, shutdowns, cooling evaporation boat, vacuum pumping, open a position and unload film, detection aluminum layer thickness, product evaporation finishes.
(4) adopt Zhongshan City Songde Coating Machine Co., Ltd, model: ST1650-21 type coating complex machine, with roller number, be the nick version applicator roll of H21 (coating dry measure is 30 grams/m), adhesive is first coated on vacuum metallization processes coating, cross after drying tunnel prebake, carry out compound with the shiny surface of stretching polyethylene film not, entire volume product is compound complete after, compound good film volume should proceed to immediately and in the curing chamber of 60 ℃ of constant temperature, carry out the maturation process of 96 hours, maturation process is complete, and should to shift out immediately curing chamber naturally cooling, after cooling, can obtain described Salar light-gathering film.
The Salar light-gathering of the present embodiment VCM film, according to State Standard of the People's Republic of China GB/T 2680-1994[building glass visible transmission ratio, the direct transmittance of sunlight, total solar energy transmittance, the ultraviolet (uv) transmission mensuration of relevant glass pane parameter when] record the direct reflectance of sunlight between 92%～94.3%, meet design requirement; According to State Standard of the People's Republic of China GB/T6739 – 2006[hardness of film pencil determination method] record hard surface coating pencil hardness >=2H, meet the demands.
Embodiment 3
Same is that example describes embodiment 2 with Fig. 1.This Salar light-gathering comprises successively with VCM film: a hard surface coating (Hard-coating) 12, a transparent thin film layer 11, strengthen light transmittance coating 13, a vacuum metallization processes coating 14, an adhesive layer 21 and a base membrane layer 31.
Raw materials used in the preparation method of this Salar light-gathering with VCM film:
It is the saturating PVC film of height of 50 microns that the transparent membrane of transparent thin film layer is selected thickness, former film mist degree is lower than 2.0%, and other physical performance indexs are to meet State Standard of the People's Republic of China GB/T3830-2008[flexible PVC calendered film and sheet material] requirement.
Surface cured coating selects buying from Kangnam Chemical co., Ltd, name of product: UV coating, the polyurethanes surface cured coating of model: UV (KUV-001), is stirred rear standby.
Strengthen the coating selection buying of light transmittance coating from the Tang Caicai of Shunde District, Foshan City film Science and Technology Ltd., name of product: highlighted coating, model: 3978-A, is stirred rear standby.
Basement membrane is selected the BOPET film of 150 micron thickness, and physical performance index is to meet the industry standard GB/T 16958-2008[of People's Republic of China (PRC) packing biaxially oriented polyester film] requirement be as the criterion.The present embodiment is selected 150 microns of commercially available obtaining of BOPET film.
Adhesive preparation method: select buying from Beijing Gaomeng Chemical Industry Co., Ltd, name of product: composite glue, the adhesive of model: YH2955, the ratio of 1:1 adds after ethyl acetate solvent first in mass ratio, is fully uniformly mixed; In the every 100 kilograms YH2955 adhesive that mixed ethyl acetate solvent, add the ratio of 20 kilograms of curing agent to add the curing agent of Beijing Gaomeng Chemical Industry Co., Ltd's production again, curing agent model: YH35, mixes rear standby.
The preparation method of VCM film for this Salar light-gathering:
(1) adopt Zhongshan City Songde Coating Machine Co., Ltd, model: the coating apparatus of ST1650-21 type, utilize the applicator roll of roller H2, a surface-coated surface cured coating to 50 micron thickness PVC films, coating dry measure is 2 ± 0.2 grams/m (coatings complete after 1 ± 0.2 micron of the thickness of coating), after UV lamp dry solidification, naturally cooling, form hard surface coating.
(2) adopt Zhongshan City Songde Coating Machine Co., Ltd, model: the coating apparatus of ST1650-21 type, utilize roller number 200 object applicator rolls, another surface-coated to 50 micron thickness PVC films strengthens light transmittance coating, coating dry measure is 2 grams/m (coatings complete after 1 ± 0.2 micron of the thickness of coating), naturally cooling after coating, form and strengthen light transmittance coating.
(3) vacuum aluminum-coated in enhancing light transmittance coating, form vacuum metallization processes coating, the vacuum aluminum-coated method with reference to recording in CN101503790 is carried out.The vacuum metallization processes equipment of aluminizing adopts German Lai Bao photoelectricity technology corporation, Ltd., and PRO-M 2100 type packaging material web coating systems, vacuumize and reach high vacuum levels (10
-4～10
-5mba), evaporation boat is preheated to 70%～90%(equipment and sets) between, aluminium wire transfer rate is controlled at 600～850mm/min, during device start winding speed>=3.5m/s, the equipment baffle plate of opening starts evaporation, and aluminium steam-condensation does not stop to cooling main hub surface on the enhancing light transmittance coating surface of the PVC film of reeling; The measured aluminum layer thickness of on-line measurement instrument of the on-line determination metallized film aluminum layer thickness measure of the change of providing for oneself according to aluminum-spraying machine in process is adjusted winding speed (speed is controlled at 5.0～11.0m/s), for guaranteeing to obtain reaching respectively more than 95% and 99% vacuum metallization processes film plating layer from face direction luminous energy, infrared ray energy reflection efficiency, the THICKNESS CONTROL of aluminium coated is in 400 ± 20 Ethylmercurichlorendimides (1 Ethylmercurichlorendimide=10
-10rice) between.After the former aluminium coated film of entire volume PVC is produced, shutdowns, cooling evaporation boat, vacuum pumping, open a position and unload film, detection aluminum layer thickness, product evaporation finishes.
(4) adopt Zhongshan City Songde Coating Machine Co., Ltd, model: ST1650-21 type coating complex machine, with roller number, be the nick version applicator roll of H21 (coating dry measure is 30 grams/m), adhesive is first coated on vacuum metallization processes coating, cross after drying tunnel prebake, carry out compound with the corona treatment face of 150 micron thickness BOPET films, entire volume product is compound complete after, compound good film volume should proceed to immediately and in the curing chamber of 60 ℃ of constant temperature, carry out the maturation process of 96 hours, maturation process is complete, and should to shift out immediately curing chamber naturally cooling, after cooling, can obtain described Salar light-gathering film.
The Salar light-gathering of the present embodiment VCM film, according to State Standard of the People's Republic of China GB/T 2680-1994[building glass visible transmission ratio, the direct transmittance of sunlight, total solar energy transmittance, the ultraviolet (uv) transmission mensuration of relevant glass pane parameter when] record the direct reflectance of sunlight between 92.05%～93.02%, meet design requirement; According to State Standard of the People's Republic of China GB/T6739 – 2006[hardness of film pencil determination method] record hard surface coating pencil hardness >=2H, meet the demands.
Although more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, do not deviating under the prerequisite of principle of the present invention and essence, can make various changes or modifications to these execution modes.
Claims (10)
1. a Salar light-gathering VCM film, it comprises that a hard surface coating, a transparent thin film layer, strengthen light transmittance coating, a vacuum metallization processes coating, an adhesive layer and a base membrane layer successively; Wherein, this hard surface coating is polyurethane ultraviolet curing dope layer, and it has the hardness being equivalent to more than pencil hardness 2H, and its thickness is more than 0.8 millimeter; This enhancing light transmittance coating is highlighted paint coatings.
2. VCM film as claimed in claim 1, is characterized in that: this transparent membrane is pet film or polyvinyl chloride film; This basement membrane is pet film, polyvinyl chloride film, bidirectional stretching polypropylene film, polyethylene film or cast polypropylene film.
3. VCM film as claimed in claim 1 or 2, is characterized in that: the light transmittance of this transparent membrane is more than 90%; The mist degree of this transparent membrane is below 2.0%.
4. VCM film as claimed in claim 1, is characterized in that: the thickness of this transparent thin film layer is 12～50 microns, is preferably 23～36 microns; And/or the thickness of this hard surface coating is 0.8～3 micron, it is preferably 0.8～1.5 micron; And/or the thickness of this enhancing light transmittance coating is 0.8～3 micron, it is preferably 0.8～1.5 micron; And/or the thickness of this vacuum metallization processes coating is 120～700 Ethylmercurichlorendimides, be preferably 350～450 Ethylmercurichlorendimides; And/or the thickness of this base membrane layer is 50～150 microns.
5. VCM film as claimed in claim 1, is characterized in that: this vacuum metallization processes coating is so that reach more than 92% the solar energy reflection efficiency from face direction, and infrared ray energy reflection efficiency reaches more than 99%.
6. the VCM film as described in claim 1 or 5, is characterized in that: the target of this vacuum metallization processes coating is gold, silver, copper, aluminium or nickel.
7. the VCM film as described in claim 1 or 5, is characterized in that: this vacuum metallization processes coating adopts vacuum evaporation coating depositional mode or magnetron sputtering deposition mode to obtain.
8. VCM film as claimed in claim 1, is characterized in that: the coating dry measure of this adhesive layer is 30 grams/m ± 2 grams/m.
9. the application in solar-energy photo-voltaic cell with VCM film of the Salar light-gathering as described in any one in claim 1～8.
10. a solar-energy photo-voltaic cell, is characterized in that: the material of the concentrator of described solar-energy photo-voltaic cell is the VCM film of the Salar light-gathering described in any one in claim 1～8.
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| CN201210287513.6A CN103595342B (en) | 2012-08-13 | 2012-08-13 | VCM film and application thereof for Salar light-gathering, solar-energy photo-voltaic cell |
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| CN201210287513.6A CN103595342B (en) | 2012-08-13 | 2012-08-13 | VCM film and application thereof for Salar light-gathering, solar-energy photo-voltaic cell |
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| CN103595342B CN103595342B (en) | 2016-05-18 |
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| CN103595342B (en) | 2016-05-18 |
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