CN107681015B - Preparation method of PVB (polyvinyl butyral) adhesive film and double-glass assembly packaged by PVB adhesive film - Google Patents
Preparation method of PVB (polyvinyl butyral) adhesive film and double-glass assembly packaged by PVB adhesive film Download PDFInfo
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- CN107681015B CN107681015B CN201711081942.7A CN201711081942A CN107681015B CN 107681015 B CN107681015 B CN 107681015B CN 201711081942 A CN201711081942 A CN 201711081942A CN 107681015 B CN107681015 B CN 107681015B
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- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 title claims abstract description 134
- 239000011521 glass Substances 0.000 title claims abstract description 44
- 239000002313 adhesive film Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000006243 chemical reaction Methods 0.000 claims abstract description 43
- 239000000843 powder Substances 0.000 claims abstract description 43
- 239000010453 quartz Substances 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 23
- 229920000642 polymer Polymers 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 13
- 238000003475 lamination Methods 0.000 claims abstract description 9
- 235000012239 silicon dioxide Nutrition 0.000 claims description 41
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 17
- 230000004048 modification Effects 0.000 claims description 16
- 238000012986 modification Methods 0.000 claims description 16
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 15
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 230000009977 dual effect Effects 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 8
- 230000002209 hydrophobic effect Effects 0.000 claims description 8
- 239000008187 granular material Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 239000007822 coupling agent Substances 0.000 claims description 6
- 229910010272 inorganic material Inorganic materials 0.000 claims description 6
- 239000011147 inorganic material Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000003607 modifier Substances 0.000 claims description 6
- 239000011368 organic material Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 6
- 150000002910 rare earth metals Chemical class 0.000 claims description 6
- 239000004408 titanium dioxide Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- 239000004014 plasticizer Substances 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 239000012463 white pigment Substances 0.000 claims description 5
- 239000012752 auxiliary agent Substances 0.000 claims description 4
- 238000005469 granulation Methods 0.000 claims description 4
- 230000003179 granulation Effects 0.000 claims description 4
- 238000005098 hot rolling Methods 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- 238000002310 reflectometry Methods 0.000 claims description 4
- 238000005411 Van der Waals force Methods 0.000 claims description 3
- 150000004645 aluminates Chemical class 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000007385 chemical modification Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 125000000524 functional group Chemical group 0.000 claims description 3
- 239000012760 heat stabilizer Substances 0.000 claims description 3
- 239000004611 light stabiliser Substances 0.000 claims description 3
- -1 lithopone Chemical compound 0.000 claims description 3
- 239000004005 microsphere Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims description 2
- 238000002464 physical blending Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000004806 packaging method and process Methods 0.000 abstract description 10
- 238000002834 transmittance Methods 0.000 abstract description 7
- 230000004888 barrier function Effects 0.000 abstract description 5
- 239000000945 filler Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 210000004027 cell Anatomy 0.000 description 26
- 230000006870 function Effects 0.000 description 13
- 239000005022 packaging material Substances 0.000 description 10
- 230000004044 response Effects 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 239000005357 flat glass Substances 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000008393 encapsulating agent Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920006280 packaging film Polymers 0.000 description 2
- 239000012785 packaging film Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000013084 building-integrated photovoltaic technology Methods 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009823 thermal lamination Methods 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0488—Double glass encapsulation, e.g. photovoltaic cells arranged between front and rear glass sheets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/055—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means where light is absorbed and re-emitted at a different wavelength by the optical element directly associated or integrated with the PV cell, e.g. by using luminescent material, fluorescent concentrators or up-conversion arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/056—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means the light-reflecting means being of the back surface reflector [BSR] type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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- Chemical & Material Sciences (AREA)
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Photovoltaic Devices (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention relates to a preparation method of a PVB (polyvinyl butyral) adhesive film and a double-glass assembly packaged by the PVB adhesive film, wherein the double-glass assembly sequentially comprises the following components from top to bottom: the high-permeability PVB film comprises high-permeability PVB, low-permeability polymer and high-permeability quartz powder; the PVB adhesive film with high reflection and light wave conversion function comprises PVB, a high reflection material, a low water-permeability polymer and a light wave conversion material. The beneficial effects are as follows: the upper layer high-permeability PVB adhesive film has high light transmittance and water vapor barrier property, and has a refractive index very similar to that of a front glass plate, so that sunlight is not refracted at interface layers of the front glass plate and the PVB adhesive film, and the incidence rate of the sunlight is improved; the shrinkage rate of PVB can be reduced by adding the high-permeability quartz powder in the upper PVB layer and adding the high-reflection filler in the lower PVB layer, so that the breakage of the glass panel in the lamination process is avoided, and the packaging yield is improved.
Description
Technical Field
The invention relates to a preparation method of a PVB adhesive film and a double-glass assembly packaged by the PVB adhesive film.
Background
The solar cell module is a core part in a solar power generation system, and the core of the photovoltaic cell module is a cell sheet, which has a service life of more than 30 years, so that the performance reliability of the solar cell module in a long-term outdoor environment is mainly determined by the packaging of the module, namely the packaging material and the packaging technology. The solar cell module package is typically formed by thermal lamination and bonding of a front glass 1, an encapsulant (encapsulant) 2, a battery sheet 3, an encapsulant 4, and a back sheet 5 in this order, and the specific package structure is shown in fig. 1.
At present, the main packaging adhesive of the component for the photovoltaic building integration is PVB, and because the ageing resistance of the common EVA packaging adhesive is not strong, the service life of the common EVA packaging adhesive is less than 50 years and the common EVA packaging adhesive cannot be used with the building, a designer should avoid using the EVA packaged component as much as possible when selecting the BIPV component. In addition, yellowing of EVA can also affect the aesthetics of the building and the power generation of the system. In addition, PVB has the following advantages: 1) Longer inventory expiration than EVA: the validity period of the EVA warehouse is six months, and the validity period of PVB is three years; 2) Higher sag resistance and edge-free flow during lamination; 3) Lamination does not generate cross-linking, and can be recycled; 4) Can be produced in other lamination modes that are more economical than vacuum lamination processes, and thus have higher yields per cycle; 5) The safety is high, namely after the glass is broken by impact, glass fragments can be stuck on the middle PVB film, so that the integrity of the whole is maintained, and the damage to human bodies and the loss of property caused by splashed or dropped glass are greatly reduced; 6) Noise reduction, ultraviolet radiation resistance, durability, etc.
PVB is the first choice packaging material of photovoltaic building integration, but because solar cell and packaging material PVB's refractive index phase difference is great, there is certain degree light reflection in two interfaces department and can't utilize incident light by high efficiency, therefore the module is not high to the utilization ratio of sunlight, power output is lower. The optimization of the optical performance of the solar cell module is mainly focused on the solar cell or the glass front plate of the outer layer, such as a cell with a structured surface, and an antireflection film is plated to reduce the reflection of sunlight; and the glass front plate plated with the anti-reflection film is used as the uppermost layer of the component, but the anti-reflection layer at the outermost layer needs to be protected by an additional packaging material, so that the manufacturing cost of the component is increased, the process of the solar cell component is complicated, and the research on the packaging material capable of improving the solar cell double-glass component on the sunlight utilization rate is less. Therefore, developing a packaging material for a related solar cell dual-glass assembly with higher sunlight utilization rate and preparing a high-efficiency solar cell dual-glass assembly on the basis of the packaging material are particularly important.
For solar cells, the back-reflecting layer plays an important role in the back-end process, and is one of the hot spots of current research. The solar cell has the main functions of reflecting and scattering light to the absorption layer so as to improve the utilization rate of sunlight and the conversion efficiency of the cell. When sunlight passes through the solar cell absorption layer, the sunlight cannot be absorbed completely, and a part of the sunlight can be transmitted. With the typical 72-wafer silicon module, sunlight passing through the gaps of the cells accounts for about 12% of the light receiving area of the whole module, and if the light energy is reused by the cells, the output power of the solar cell module can be obviously greatly improved. In order to increase the light utilization rate of the solar cell and improve the conversion efficiency, the solar cell module disclosed in China patent (publication No. CN 103045127A) adopts a white high-reflection organic polymer material as an encapsulation material, so that transmitted light can be reflected back for secondary absorption, and the photoelectric conversion efficiency is improved; in addition, the material with the light wave conversion function is added into the packaging material, so that the packaging material can convert light which is not absorbed by the battery piece into response light which can be used for generating electricity, and the solar light utilization rate of the battery piece can be improved. The silicon-based solar cell has no response or little response to light with a wavelength less than 350nm and a wavelength greater than 1200nm, and the peak value of photoelectric response in the spectral region is between 700nm and 900 nm. However, the solar radiation spectrum has a wavelength range between 150nm and 4000nm, including ultraviolet light, visible light, and infrared light. Wherein 7% of the energy is distributed in the ultraviolet region, 50% of the energy is distributed in the visible region, and 43% of the energy is distributed in the infrared region. This means that a significant portion of the energy in the solar radiation spectrum cannot be used by the cell to generate electricity, and conversely, this portion of the energy is absorbed by the cell to be converted into heat, which increases the operating temperature of the photovoltaic module, and causes a loss of the module's power generation due to the negative temperature coefficient of the crystalline silicon photovoltaic cell. If solar energy in the ultraviolet region and the infrared region which do not respond can be utilized, the output power of the solar module can be effectively improved, the working temperature of the photovoltaic module can be greatly reduced, and the generated energy is further improved. Obviously, if the two ideas of high reflection and light wave conversion are integrated in one packaging material, the sunlight can certainly exert the maximum effect, the power generation efficiency can be effectively improved, and huge economic benefits are brought to end users.
Finally, the PVB film of the double-glass assembly is easy to shrink in the lamination process, mainly due to the fact that macromolecular chains of PVB are oriented in the tape casting film forming process, and chain segment loosening occurs when the PVB is heated. The shrinkage of PVB film is an indicator that requires strict control because when the shrinkage is large, shrinkage stress tends to deform the back sheet and even crack the glass panel, resulting in component rejection and low yield. Although the shrinkage of PVB packaging films can be reduced by adjusting the PVB film formulation, perfecting the processing technique, performing annealing treatment, etc., it often results in reduced production efficiency, increased energy consumption and increased cost. At present, the shrinkage rate of PVB packaging film products at home and abroad is generally about 3%, and the testing conditions are as follows: at a temperature of 120 ℃ for 3 minutes, the requirements of solar cells with larger areas are still not fully met.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a preparation method of a PVB (polyvinyl butyral) adhesive film and a double-glass assembly packaged by the PVB adhesive film.
The invention relates to a double-glass assembly packaged by PVB adhesive film, which has the technical scheme that:
the utility model provides a two glass subassembly with PVB glued membrane encapsulation which characterized in that: the double glass assembly comprises from top to bottom in sequence: the high-permeability PVB film comprises PVB, a low-permeability polymer and high-permeability quartz powder; the PVB adhesive film with high reflection and light wave conversion function comprises PVB, a high reflection material, a low water-permeability polymer and a light wave conversion material.
The invention provides a double-glass assembly packaged by PVB adhesive film, which also comprises the following auxiliary technical schemes:
wherein, the Gao Toudan quartz powder is nano-to-micron-sized, and the addition amount of the Gao Toudan quartz powder is 0.1-10 percent.
Wherein, the surface modification of the high-permeability quartz powder is chemical modification, and modification molecules and groups are combined with quartz powder particles through chemical bonds.
Wherein, the surface modification of the high-permeability quartz powder is physical modification, and modification molecules and groups are combined with quartz powder particles through hydrogen bonds or Van der Waals force.
Wherein the surface modifier is a molecule having a hydrolyzable group and a functional group.
Wherein the surface modifier is one or a combination of a plurality of silane coupling agents, titanate coupling agents or aluminate coupling agents.
Wherein the high-reflection material is an inorganic material or an organic material; wherein the inorganic material comprises titanium dioxide, lithopone, zinc oxide, hollow silicon dioxide, hollow titanium dioxide or hollow ceramic powder, and the organic material comprises organic microspheres or organic fibers.
The light wave conversion material is a material capable of converting ultraviolet light or infrared light into visible light.
Wherein the light wave conversion material is rare earth doped fluoride with high conversion efficiency, and the rare earth doped fluoride comprises NaYF 4 ：Yb 3+ 、Er 3+ ，SrYF 4 ：Er 3+ Or (b) YF (Yf) 3 ：Yb、Er 3+ One or a combination of several of them.
The invention also provides a preparation method of the upper layer high-permeability PVB adhesive film, which comprises the steps of uniformly stirring and mixing PVB resin, a plasticizer, an auxiliary agent and high-permeability quartz powder in a high-speed mixer at 60 ℃, discharging, rapidly cooling, extruding and granulating the cooled resin by using a double-screw exhaust type extruder, wherein the machine body temperature of the double-screw exhaust type extruder is 100-160 ℃, and the machine head temperature is 150 ℃; the granules are dried in vacuum for 5-10h, then mixed with an auxiliary agent, finally extruded in a single screw extruder, and hot-rolled into PVB (polyvinyl butyral) films with the thickness of 0.3-0.8 mm, wherein the temperature of the machine body of the single screw extruder is 100-140 ℃ and the temperature of a die is 120-140 ℃.
Wherein 75 parts of high-permeability PVB master batch, 25 parts of plasticizer, 1 part of heat stabilizer, 0.5 part of light stabilizer and 5 parts of high-permeability quartz powder are stirred and mixed uniformly in a high-speed mixer at 60 ℃, discharged and rapidly cooled, and then the cooled resin is extruded and granulated by a double-screw exhaust type extruder, wherein the temperature of the machine body of the double-screw exhaust type extruder is 100-160 ℃, and the temperature of the machine head is 150 ℃; extruding the PVB granules in a single-screw extruder, and hot-rolling to obtain PVB films with the thickness of 0.3-0.8 mm, wherein the temperature of the machine body of the single-screw extruder is 100-140 ℃, the temperature of a die opening is 120-140 ℃, and the PVB master batch is subjected to surface treatment by titanate or silane coupling agent before high-permeability quartz powder is added.
Wherein, 1 part of long-chain hydrophobic silane coupling agent is added in the double-screw extrusion granulation stage to seal the residual hydroxyl in PVB master batch.
After the PVB master batch is blocked by a long-chain hydrophobic silane coupling agent, adding low-polarity water-blocking substances into the obtained granules in the following single-screw extrusion hot roll and film pressing process; the low-polarity water-blocking substance is an oligomer or a high polymer, and the coexistence mode of the low-polarity water-blocking substance and PVB is physical blending or chemical grafting blending.
Wherein, the mixture of white pigment with high gloss and high reflectivity and wavelength conversion agent with light wave conversion function is used to replace high-transmission quartz powder to manufacture PVB with high reflection and light wave conversion function.
Wherein, the white pigment with high gloss and high reflectivity and the wavelength conversion agent with light wave conversion function are both subjected to surface treatment by titanate or silane coupling agent.
The implementation of the invention comprises the following technical effects:
1. the upper layer high-permeability PVB adhesive film provided by the invention has high light transmittance and water vapor barrier property, and has a refractive index very similar to that of a front glass plate, so that sunlight is not refracted in the front glass plate and PVB interface layer, and the incidence rate of the sunlight is improved; the polarity of PVB can be improved by adding the high-permeability quartz powder into PVB, so that the compatibility with the front plate glass and the interaction of hydrogen bonds are improved, and the adhesion between the front plate glass and the PVB adhesive film is firmer; the shrinkage rate of PVB can be reduced by adding the high-transmittance quartz powder in PVB, adding the high-reflectance filler in the lower layer and the like, and the breakage of the glass panel in the lamination process is avoided, so that the packaging yield is improved; 4. the lower layer high reflection PVB can secondarily reflect sunlight passing through the gaps between the battery pieces and the frame, and then the sunlight is secondarily utilized by the battery pieces to generate electricity, so that the output power of the battery pieces is improved; 5. the wavelength conversion agent with the light wave conversion function added in the lower layer high-reflection PVB can convert the wavelength which cannot be responded by the battery piece into the light in the wavelength range which can generate photoelectric response, so that the utilization rate of the component on solar energy is greatly increased, the output power is improved, and the working temperature of the component is reduced; 6. the low water permeability polymer is added into PVB, so that the water resistance of PVB can be improved, and the long-term reliability of the battery piece is ensured.
Drawings
Fig. 1 is a schematic structural view of a package structure of a battery assembly according to the prior art.
Fig. 2 is a schematic structural view of a package structure of the battery assembly of the present invention.
Detailed Description
The invention will now be described in detail with reference to the following examples and the accompanying drawings, it being pointed out that the examples described are intended only to facilitate an understanding of the invention and are not intended to be limiting in any way.
Referring to fig. 2, the dual glass assembly encapsulated by PVB film according to this embodiment includes, from top to bottom: the glass front plate 11, an upper layer high-permeability PVB adhesive film 12, a battery piece 13, a lower layer PVB adhesive film 14 with high reflection and light wave conversion function and a glass back plate 15, wherein the upper layer high-permeability PVB adhesive film 12 comprises high-permeability PVB, low-permeability polymer and high-permeability quartz powder; the lower layer of the PVB film 14 with high reflection and light wave conversion function comprises PVB, a high reflection material, a low water-permeability polymer and a light wave conversion material. The upper layer high-permeability PVB adhesive film 12 of the embodiment has high light transmittance and water vapor barrier property, and has a refractive index very similar to that of the front glass plate, so that sunlight is not refracted in the front glass plate and PVB interface layer, and the incidence rate of the sunlight is improved; the polarity of PVB can be improved by adding the high-permeability quartz powder into PVB, so that the compatibility with the front plate glass and the hydrogen bond interaction are improved, and the adhesion between the front plate glass and the PVB adhesive film is firmer; the shrinkage rate of PVB can be reduced by adding the high-transmittance quartz powder in PVB, adding the high-reflectance filler in the lower layer and the like, and the breakage of the glass panel in the lamination process is avoided, so that the packaging yield is improved; the lower PVB layer can secondarily reflect sunlight penetrating through the gaps between the battery pieces and the frame, and is secondarily utilized by the battery pieces to generate electricity, so that the output power of the battery pieces is improved; the wavelength conversion agent with the light wave conversion function added in the lower PVB layer can convert the wavelength which cannot be responded by the battery piece into the light in the wavelength range which can generate photoelectric response, so that the utilization rate of the component on solar energy is greatly increased, the output power is improved, and the working temperature of the component is reduced; the low water permeability polymer is added into the lower PVB layer, so that the water resistance of the PVB can be improved, and the long-term reliability of the battery piece is ensured.
Preferably, the Gao Toudan quartz powder is nano-to-micron-sized, and the adding amount of the Gao Toudan quartz powder is 0.1% -10%; wherein, the surface modification of the high-permeability quartz powder is chemical modification or physical modification. When the surface of the high-permeability quartz powder is modified chemically, the modification molecules and groups are combined with the quartz powder particles through chemical bonds; when the surface of the high-permeability quartz powder is modified into physical modification, the modification molecules and groups are combined with the quartz powder particles through hydrogen bonds or Van der Waals forces.
Preferably, the method comprises the steps of, the surface modifier is a molecule having a hydrolyzable group and a functional group. More preferably, the surface modifier is one or a combination of several of a silane coupling agent, a titanate coupling agent or an aluminate coupling agent.
Preferably, the highly reflective material is an inorganic material or an organic material; wherein the inorganic material comprises titanium dioxide, lithopone, zinc oxide, hollow silicon dioxide, hollow titanium dioxide or hollow ceramic powder, and the organic material comprises organic microspheres or organic fibers.
Preferably, the light wave conversion material is a material capable of converting ultraviolet light or infrared light into visible light. More preferably, the light wave conversion material is a rare earth doped fluoride with high conversion efficiency, the rare earth doped fluoride comprising NaYF4: yb3+, er3+, srYF4: er3+ or YF3: and one or more of Yb and Er3+ are compounded.
The following describes in detail the preparation of the high-permeability PVB film of the present invention in a number of examples.
Implementation of the embodiments example 1
75 parts of high-permeability PVB master batch, 25 parts of plasticizer, 1 part of heat stabilizer, 0.5 part of light stabilizer and 5 parts of high-permeability quartz powder are stirred in a high-speed mixer to be uniformly mixed at 60 ℃, discharged and rapidly cooled, and then the mixed resin is extruded and granulated by a double-screw exhaust type extruder, wherein the temperature of a machine body is 100-160 ℃, and the temperature of a machine head is 150 ℃. And extruding the PVB granules in a single screw extruder, and hot rolling to obtain PVB film (thickness of 0.3-0.8 mm), wherein the temperature of the machine body is 100-140 ℃ and the die temperature is about 130 ℃. Sample number S1 obtained in example 1.
Example 2
Similar to example 1, except that the high-permeability silica flour was surface-treated with titanate or silane coupling agent prior to addition, the purpose was to increase the dispersibility of the high-permeability silica flour in the PVB masterbatch to achieve the best results. Sample number S2 obtained in example 2.
Example 3
Similar to example 2, except that 1 part of long chain hydrophobic silane coupling agent was added during the twin screw extrusion granulation stage, the purpose was to block the residual hydroxyl groups in the PVB masterbatch, reduce the hydrophilicity of the PVB, and improve the moisture barrier. Sample number S3 obtained in example 3.
Example 4
Similar to example 3, except that after the PVB masterbatch is terminated with a long chain hydrophobic silane coupling agent, the resulting pellets are then coated with a low polarity water blocking material, which may be an oligomer or a polymer, which may be physically blended or chemically grafted with the PVB in a subsequent single screw extrusion hot roll film process to further reduce the moisture vapor transmission rate of the PVB. The sample number obtained in example 4 is S4, which is a PVB packaging adhesive film with high light transmittance and high water resistance.
Example 5
Similar to example 1, except that the high-transmittance quartz powder was replaced with a mixture of a white pigment having high gloss and high reflectance and a wavelength conversion agent having a light wave conversion function. The sample number obtained in example 5 is S5, which is PVB with high reflection and light wave conversion.
Implementation of the embodiments example 6
Similar to example 5, except that the pigment and the wavelength conversion agent having an optical wave conversion function were both surface-treated with a titanate or silane coupling agent, the purpose was to increase their dispersibility in the PVB masterbatch to achieve the best effect. Sample number obtained in example 6 was S6.
Example 7
Similar to example 6, except that a long chain hydrophobic silane coupling agent was added during the twin screw extrusion granulation stage, the purpose was to block residual hydroxyl groups in the PVB masterbatch, reduce the hydrophilicity of the PVB, and improve moisture barrier properties, sample number S7 from example 7.
Example 8
Similar to example 7, except that after the PVB masterbatch is terminated with a long chain hydrophobic silane coupling agent, the resulting pellets are then subjected to a subsequent single screw extrusion hot roll film process with some low polarity water blocking species to further reduce water penetration of the PVB. The sample number S8 obtained in example 8 is highly reflective PVB packaging adhesive film with high water resistance and light wave conversion function.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (14)
1. The utility model provides a two glass subassembly with PVB glued membrane encapsulation which characterized in that: the double glass assembly comprises from top to bottom in sequence: the high-permeability PVB film comprises PVB, a low-permeability polymer and high-permeability quartz powder; the PVB adhesive film with high reflection and light wave conversion function comprises PVB, a high reflection material, a low water-permeability polymer and a light wave conversion material;
the Gao Toudan quartz powder is nano-to-micron-sized, and the addition amount of the Gao Toudan quartz powder is 0.1% -10%;
the polarity of PVB is improved by adding the high-permeability quartz powder, so that the adhesion between the glass front plate and the PVB adhesive film is firmer; the shrinkage rate of PVB is reduced by adding the high-permeability quartz powder, so that breakage of the glass panel in the lamination process is avoided;
the high-reflection material is an inorganic material or an organic material; wherein the inorganic material comprises titanium dioxide, lithopone, zinc oxide, hollow silicon dioxide, hollow titanium dioxide or hollow ceramic powder, and the organic material comprises organic microspheres or organic fibers.
2. A dual glass assembly encapsulated by PVB film according to claim 1, wherein: the surface modification of the high-permeability quartz powder is chemical modification, and modification molecules and groups are combined with quartz powder particles through chemical bonds.
3. A dual glass assembly encapsulated by PVB film according to claim 1, wherein: the surface modification of the high-permeability quartz powder is physical modification, and modification molecules and groups are combined with quartz powder particles through hydrogen bonds or Van der Waals force.
4. A dual glass assembly encapsulated by PVB film according to claim 2, wherein: the surface modifier is a molecule having a hydrolyzable group and a functional group.
5. A dual glass assembly encapsulated by PVB film according to claim 3, wherein: the surface modifier is one or a combination of a plurality of silane coupling agents, titanate coupling agents or aluminate coupling agents.
6. A dual glass assembly encapsulated by PVB film according to claim 1, wherein: the light wave conversion material is a material capable of converting ultraviolet light or infrared light into visible light.
7. The dual glass assembly of any of claims 1-6, wherein the dual glass assembly is encapsulated with a PVB film, the method is characterized in that: the light wave conversion material is rare earth doped fluoride with high conversion efficiency, and the rare earth doped fluoride comprises NaYF4: yb3+, er3+, srYF4: er3+ or YF3: and one or more of Yb and Er3+ are compounded.
8. A method of preparing the upper layer high transmission PVB film of claim 1, wherein: stirring and mixing PVB resin, plasticizer, auxiliary agent and high-permeability quartz powder uniformly in a high-speed mixer at 60 ℃, discharging and then rapidly cooling, and extruding and granulating the cooled resin by using a double-screw exhaust type extruder, wherein the temperature of a machine body of the double-screw exhaust type extruder is 100-160 ℃ and the temperature of a machine head is 150 ℃; and (3) drying the obtained granules in vacuum for 5-10h, mixing with an auxiliary agent, and finally extruding and hot-rolling in a single-screw extruder to obtain PVB (polyvinyl butyral) films with the thickness of 0.3-0.8 mm, wherein the temperature of a machine body of the single-screw extruder is 100-140 ℃ and the temperature of a die is 120-140 ℃.
9. The method for preparing the upper layer high-permeability PVB adhesive film according to claim 8, wherein the method comprises the following steps: stirring and uniformly mixing 75 parts of high-permeability PVB master batch, 25 parts of plasticizer, 1 part of heat stabilizer, 0.5 part of light stabilizer and 5 parts of high-permeability quartz powder in a high-speed mixer at 60 ℃, discharging and rapidly cooling, extruding and granulating the cooled resin by a double-screw exhaust type extruder, wherein the temperature of a machine body of the double-screw exhaust type extruder is 100-160 ℃ and the temperature of a machine head is 150 ℃; and extruding the PVB granules in a single-screw extruder, and hot-rolling to obtain PVB films with the thickness of 0.3-0.8 mm, wherein the temperature of the machine body of the single-screw extruder is 100-140 ℃ and the temperature of the die opening of the single-screw extruder is 120-140 ℃.
10. The method for preparing the upper layer high-permeability PVB adhesive film according to claim 9, wherein the method comprises the following steps: the PVB masterbatch is surface treated with a titanate or silane coupling agent prior to addition of the high-permeability quartz powder.
11. The method for preparing the upper layer high-permeability PVB adhesive film according to claim 10, wherein the method comprises the following steps: 1 part of long-chain hydrophobic silane coupling agent is added in the double-screw extrusion granulation stage to seal residual hydroxyl groups in PVB master batch.
12. The method for preparing the upper layer high-permeability PVB adhesive film according to claim 11, wherein the method comprises the following steps: after the PVB master batch is blocked by a long-chain hydrophobic silane coupling agent, adding low-polarity water-blocking substances into the obtained granules in the next single-screw extrusion hot roller and film pressing process; the low-polarity water-blocking substance is an oligomer or a high polymer, and the coexistence mode of the low-polarity water-blocking substance and PVB is physical blending or chemical grafting blending.
13. The method for preparing the upper layer high-permeability PVB adhesive film according to claim 8, wherein the method comprises the following steps: PVB with high reflection and light wave conversion function is prepared by replacing high-transmission quartz powder with white pigment with high gloss and high reflectivity and wavelength conversion agent with light wave conversion function.
14. The method for preparing the upper layer high-permeability PVB adhesive film according to claim 13, wherein the method comprises the following steps: the white pigment with high gloss and high reflectivity and the wavelength conversion agent with the light wave conversion function are subjected to surface treatment by titanate or silane coupling agent.
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| CN109823007B (en) * | 2019-03-29 | 2021-07-27 | 长春工业大学 | PVB sound-insulation laminated glass and preparation method thereof |
| CN111944451A (en) * | 2019-05-16 | 2020-11-17 | 汉能移动能源控股集团有限公司 | Preparation method of colored adhesive film and colored tile |
| CN110885641B (en) * | 2019-12-16 | 2021-11-16 | 陕西工业职业技术学院 | High-performance PVB (polyvinyl butyral) adhesive film for packaging solar cell and preparation method thereof |
| CN114149770B (en) * | 2021-12-03 | 2022-11-25 | 秦顶轻大绿色智能建筑科技(无锡)有限公司 | Photovoltaic module and manufacturing method thereof |
| CN114716948A (en) * | 2022-04-28 | 2022-07-08 | 苏州赛伍应用技术股份有限公司 | UV light conversion packaging material and preparation method and application thereof |
| CN117410365A (en) * | 2023-12-15 | 2024-01-16 | 宁波长阳科技股份有限公司 | Solar cell module reflective film and preparation method and application thereof |
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