Photovoltaic glass reflection film with ultra-high visible light reflectance and preparation method

专利摘要:
The disclosure provides a photovoltaic glass re fl ective fi lm having ultrahigh visible light re fl ectance, comprising the following components in parts by weight: l ~ lO parts of barium sulfate, l ~ lO parts of silicon nitride, l ~ 5 parts of polysilsesquioxane, 5 ~ lO parts or 10 methyltrimethoxysilane, 0.l ~ 2 parts of magnesium fluoride, 5 ~ 15 parts of water and 20 ~ 40 parts of a silane coupling agent. Meanwhile, the disclosure also discloses a method for preparing the above photovoltaic glass reflective film having ultrahigh visible light reflectance. According to the disclosure, the photovoltaic glass reflective film is a high-reflective coating product, low in production cost, good in bondability with glass and diffcult to scrap, the 1 5 high-reflective coating material has visible light reflectance of> 85% and whiteness or> 85.
公开号:NL2024581A
申请号:NL2024581
申请日:2019-12-26
公开日:2020-07-08
发明作者:Wang Meilan；Qian Dongqin；Wang Yong；Wei Junyi
申请人:Jiangsu Baifu Tech Co Ltd；
IPC主号:

专利说明:

[0001] The disclosure belongs to the technical field of photovoltaic glass materials, and particularly relates to a photovoltaic glass reflective film having ultrahigh visible light reflectance and a method for preparing the same. BACKGROUND
[0002] A silicon material is a semiconductor material, and a power generation principle of a solar cell is mainly that the photoelectric effect of such the semiconductor is utilized. Silicon has great reflectance, light emitting to the surface of silicon cannot be sufficiently absorbed, and a large portion of light is reflected. In order to reduce the reflection loss to the greatest extent, one or more layers of antireflective films having reflectance and thickness matched with those of the cell can be plated on the cell to improve the conversion efficiency of the cell. Excessive antireflective films can increase the transmittance of light, thereby improving the efficiency of the cell. A porous silicon dioxide antireflective film not only improves the conversion efficiency of the cell by 5% ~ 6% but also increases the cracking resistance of a substrate.
[0003] In recent years, a double-glass assembly has been quickly developed, especially, which can be applied in occasions where climatic environment is relatively harsh. Expect a while encapsulating material is used, for EVA and POE, coating a white high-reflective coating on the rear surface of glass has become a solution for effectively improving the efficiency of the assembly. Thus, some manufactures and scholars begin to research high-reflective coating materials. There are few domestically listed products. Products used by manufactures for double-glass solar energy assemblies are almost imported from abroad, which are high in price, poor in bondability with domestic glass and easy to scrap, not high in reflectance of visible light (about 78%), and low in whiteness (about 80). If the reflectance of glass on visible light is improved to more than 80% and whiteness is improved to more than 82, the efficiency of the cell assembly can be improved by 3% -6%. SUMMARY
[0004] The invention objective: the objective of the disclosure is to provide a photovoltaic glass reflective film having ultrahigh visible light reflectance aiming at the defects of the prior art.
[0005] [0005] Another objective of the disclosure is to provide a method for preparing the above photovoltaic glass reflective film having ultrahigh visible light reflectance
[0006] Technical solution: in order to achieve the above objectives, the disclosure is specifically achieved: provided is a photovoltaic glass reflective film having ultrahigh visible light reflectance, comprising the following components in parts by weight: 1 ~ 10 parts of barium sulfate, 1-10 parts of silicon nitride, 1-5 parts of polysilsesquioxane, 5-10 parts of methyltrimethoxysilane, 0.1 ~ 2 parts of magnesium fluoride, 5 ~ 15 parts of water and 20-40 parts of a silane coupling agent.
[0007] Wherein, the silane coupling agent is vinyl triethoxysilane or vinyl trimethoxysilane.
[0008] Wherein, the photovoltaic glass reflective film consists of the following components in parts by weight: 3 parts of barium sulfate, 5 parts of silicon nitride, 2 parts of polysilsesquioxane, 7 parts of methyltrimethoxysilane, 1 part of magnesium fluoride, 12 parts of water and 32 parts of vinyltriethoxysilane
[0009] Provided is a method for preparing the photovoltaic glass reflective film having ultrahigh visible light reflectance, comprising the following steps:
[0010] (1) weighing various components according to formula, grinding barium sulfate, silicon nitride and magnesium fluoride to a fineness being less than 100um;
[0011] (2) mixing barium sulfate, silicon nitride and magnesium fluoride with water, heating after stirring for 5 ~ 10 min, adding methyltrimethoxysilane after heating to 50 ° C, stirring for 10 ~ 20 min, then adding polysilsesquioxane and the silane coupling agent to be stirred, stirring for 30-60 min, sucking the mixed material while stirring, and continuing suction for 2 ~ 4h when stirring is completed; and
[0012] (3) coating the mixed material obtained in step 2 on photovoltaic glass using a silk-screen printing method, baking for 2 ~ 5min at 680 ~ 720 ° C to obtain a product.
[0013] The principle of the disclosure is as follows: metal sulfide and metal nitride have excellent reflection performance but relatively high reflection loss rate. By cross-linking metal sulfide and metal nitride with an organic silicon source, the silicon source can form a dielectric medium attached to metal sulfide and metal nitride, thereby effectively reducing the reflection loss of metal sulfide and metal nitride; meanwhile, in the disclosure, methyltrimethoxysilane can form a certain amount of methanol after reacting with water, methanol can play a role of an organic solvent. The generated methanol can well mutually dissolve with the silane coupling agent, which can reduce the use of the organic solvent and improve the concentration of the mixed material.
[0014] Beneficial effects: compared with the traditional technology, the disclosure has the following advantages:
[0015] (1) The high-reflective coating product of the disclosure is low in production cost, good in bondability with glass and difficult to scrap.
[0016] (2) The expansion coefficient of an inorganic binder prepared by the disclosure is matched with that of glass, the glass does not deform and the strength is improved.
[0017] (3) The high-reflective coating material of the disclosure has visible light reflectance of> 85% and whiteness of> 85.
[0018] (4) The high-reflective coating of the disclosure has good chemical stability and thermal stability. DESCRIPTION OF THE EMBODIMENTS
[0019] Example 1
[0020] 1 part by weight of barium sulfate, 1 part by weight of silicon nitride, 1 part by weight of polysilsesquioxane, 5 parts by weight of methyltrimethoxysilane, 0.1 part by weight of magnesium fluoride, 5 parts by weight of water and 20 parts by weight of vinyltriethoxysilane were weighed, and barium sulfate, silicon nitride and magnesium fluoride were ground to a fineness being less than 100 um; barium sulfate, silicon nitride, magnesium fluoride and water were mixed, stirred for 5-10 min and then heated to 55 ° C, methyltrimethoxysilane was then added and stirred for 10 ~ 20min, subsequently polysilsesquioxane and vinyltriethoxysilane were added and stirred for 30 ~ 60min , the mixed material was sucked while stirring, and suction was further maintained for 2-4h after stirring was completed; the obtained mixed material was coated on photovoltaic glass by using a silk-screen printing method, and baking was carried out for 2-5min at 680-720 ° C to obtain a product.
[0021] Example 2
[0022] 10 parts by weight of barium sulfate, 10 parts by weight of silicon nitride, 5 parts by weight of polysilsesquioxane, 10 parts by weight of methyltrimethoxysilane, 2 parts by weight of magnesium fluoride, 15 parts by weight of water and 40 parts by weight of vinyltriethoxysilane were weighed, and barium sulfate, silicon nitride and magnesium fluoride were ground to a fineness being less than 100 pm; barium sulfate, silicon nitride, magnesium fluoride and water were mixed, stirred for 5-10 min and then heated to 55 °, methyltrimethoxysilane was then added and stirred for 10 ~ 20min, subsequently polysilsesquioxane and vinyltriethoxysilane were added and stirred for 30 ~ 60min, the mixed material was sucked while stirring, and suction was further maintained for 2-4h after stirring was completed; the obtained mixed material was coated on photovoltaic glass by using a silk-screen printing method, and baking was carried out for 2-5min at 680-720 ° C to obtain a product.
[0023] Example 3
[0024] 2 parts by weight of barium sulfate, 3 parts by weight of silicon nitride, 2 parts by weight of polysilsesquioxane, 6 parts by weight of methyltrimethoxysilane, 1 part by weight of magnesium fluoride, 12 parts by weight of water and 25 parts by weight of vinyltriethoxysilane were weighed, and barium sulfate, silicon nitride and magnesium fluoride were ground to a fineness being less than 100 um; barium sulfate, silicon nitride, magnesium fluoride and water were mixed, stirred for 5 ~ 10 min and then heated to 55 ° C, methyltrimethoxysilane was then added and stirred for 10 ~ 20min, subsequently polysilsesquioxane and vinyltriethoxysilane were added and stirred for 30 ~ 60min , the mixed material was sucked while stirring, and suction was further maintained for 2-4h after stirring was completed; the mixed material was coated on photovoltaic glass by using a silk-screen printing method, and baking was carried out for 2-5min at 680-720 ° C to obtain the product.
[0025] Example 4
[0026] 5 parts by weight of barium sulfate, 5 parts by weight of silicon nitride, 3 parts by weight of polysilsesquioxane, 8 parts by weight of methyltrimethoxysilane, 0.5 part by weight of magnesium fluoride, 10 parts by weight of water and 30 parts by weight of vinyltriethoxysilane were weighed, and barium sulfate, silicon nitride and magnesium fluoride were ground to a fineness being less than 100 um; barium sulfate, silicon nitride, magnesium fluoride and water were mixed, stirred for 5-10 min and then heated to 55 ° C, methyltrimethoxysilane was then added and stirred for 10 ~ 20min, subsequentlypolysilsesquioxane and vinyltriethoxysilane were added and stirred for 30-60min, the mixed material was sucked while stirring, and suction was further maintained for 2-4h after stirring was completed; the mixed material was coated on photovoltaic glass by using a silk-screen printing method, and baking carried out for 2-5min at 680-720 ° C to obtain a product. [0027] Example 5
[0028] 7 parts by weight of barium sulfate, 8 parts by weight of silicon nitride, 4 parts by weight of polysilsesquioxane, 9 parts by weight of methyltrimethoxysilane, 1.5 parts by weight of magnesium fluoride, 8 parts by weight of water and 35 parts by weight of vinyltriethoxysilane were weighed, and barium sulfate, silicon nitride and magnesium fluoride were ground to a fineness being less than 100 um; barium sulfate, silicon nitride, magnesium fluoride and water were mixed, stirred for 5 ~ 10 min and then heated to 55 ° C, methyltrimethoxysilane was then added and stirred for 10 ~ 20min, subsequently polysilsesquioxane and vinyltriethoxysilane were added and stirred for 30 ~ 60min , the mixed material was sucked while stirring, and suction was carried out for 2-4h after stirring was completed; the mixed material was coated on photovoltaic glass by using a silk-screen printing method, and baking was carried out for 2-5min at 680-720 ° C to obtain a product.

权利要求:
Claims (3)
[1]
1.- Ultraviolet light reflection photovoltaic glass film comprising the following components in parts by weight: 1-10 parts of barium sulfate, 1-10 parts of silicon nitride, 1-5 parts of polysilsesquioxane, 5-10 parts of methyl trimethoxysilane, 0.1 ~ 2 parts of magnesium fluoride, 5-15 parts of water and 20-40 parts of a silane coupling agent.
[2]
An ultra-strong light reflectance photovoltaic glass film according to claim 1, wherein the silane coupling agent is vinyl triethoxysilane or vinyl trimethoxysilane.
[3]
The ultra-strong light reflection photovoltaic glass film according to claim 1 or 2, consisting of the following components in parts by weight: 3 parts of barium sulfate, 5 parts of silicon nitride, 2 parts of polysilsesquioxane, 7 parts of methyl trimethoxysilane, 1 part of magnesium fluoride, 12 parts of water and vinyltriethoxysilane. .
A method for preparing the ultra-strong light reflection photovoltaic glass film according to any one of claims 1 to 3, comprising the steps of (1) weighing different components of a formula, milling barium sulfate, silicon nitride and magnesium fluoride into a fineness that is less than 100 µm; (2) mixing barium sulfate, silicon nitride and magnesium fluoride with water, heating after stirring for 5-10 minutes, adding methyl trimethoxysilane after heating to 50 ° C, stirring for 10-20 minutes, then adding polysilsesquioxane and the silane coupling agent for stirring, stirring for 30-60 minutes, sucking the mixed material while stirring, and continuing suction for 2-4 hours when stirring is complete; and (3) coating the mixed material obtained in step 2 on photovoltaic glass using a screen printing method, baking for 2-5 minutes at 680-720 ° C to obtain a product.

类似技术:

---

公开号 | 公开日 | 专利标题

---

CN101186781B|2010-05-19|Transparent heat insulating dope and preparation method thereof

---

CN102061111B|2013-12-25|Preparation method of self-cleaning ceramic nanometer glass antireflective coating material and preparation method of reflection deducting coating

---

CN101898870B|2012-08-15|Film plating liquid and preparation method thereof as well as method for manufacturing solar battery packaging glass by using same

---

CN103524049B|2016-08-24|A kind of monolayer SiO2the preparation method of anti-reflection film

---

CN103922610B|2017-01-25|High-transparency solar photovoltaic glass

---

CN102531406A|2012-07-04|Antireflective coating solution and preparation method thereof, as well as photovoltaic glass and preparation method of photovoltaic glass

---

CN101560059A|2009-10-21|Aluminum-doped zinc oxide film coating and nano-rod array material as well as preparation method thereof

---

CN106009021B|2019-03-12|A kind of antireflective of suitable plastic basis material, anti-fingerprint coating film preparation method

---

CN101905953A|2010-12-08|Photovoltaic glass plated with temperable anti-reflection film layer and manufacturing method thereof

---

CN104070734B|2019-11-15|A kind of coated glass with high reflectivity and preparation method thereof

---

NL2024581B1|2020-09-30|Photovoltaic glass reflection film with ultra-high visible light reflectance and preparation method thereof

---

CN101844877B|2012-06-06|Processing method for high anti-reflective glass for packaging solar battery pack

---

CN103936292B|2017-02-08|High transmittance film coating liquid used for preparing solar photovoltaic glass and preparation method of film coating liquid

---

CN101308878A|2008-11-19|Uniform large-area light ray anti-reflection coating solar battery packaging glass and manufacturing method

---

CN102964957A|2013-03-13|Heat insulation and heat control coating material and preparation method thereof

---

CN103059617B|2015-07-22|Preparation method for nanometer anti-reflection self-cleaning coating solution

---

CN106242312A|2016-12-21|The preparation of a kind of photovoltaic glass coating liquid and application

---

CN111040623A|2020-04-21|Special functional heat-insulation and temperature-reduction coating and preparation method thereof

---

CN109786493B|2020-11-13|High-adhesion ceramic and glass reflective coating slurry and preparation method and application thereof

---

CN109233493B|2020-09-25|High-reflectivity acrylic acid heat-shielding coating and preparation method thereof

---

CN103524048A|2014-01-22|Preparation method of multi-layer SiO2 inorganic anti-reflection film

---

CN106655995B|2019-03-12|Self-cleaning photoelectric conversion solar tile

---

CN108659657A|2018-10-16|A kind of building external paint and its application

---

CN109373618A|2019-02-22|A kind of preparation method of selective solar composite coating for absorbing

---

CN201336312Y|2009-10-28|Double-sided anti-reflection film solar energy photovoltaic glass

同族专利:

---

公开号 | 公开日

---

CN109437584B|2021-08-10|

---

CN109437584A|2019-03-08|

---

NL2024581B1|2020-09-30|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

---

US20140290714A1|2013-03-27|2014-10-02|Changzhou Almaden Co., Ltd.|Glass coated with a highly reflective film and process for preparing the same|

---

CN106366986B|2016-08-27|2018-10-30|乐凯胶片股份有限公司|A kind of photovoltaic packaging adhesive film|CN111072968A|2019-12-31|2020-04-28|宁波大榭开发区综研化学有限公司|Light diffusion reflecting agent, shading film and shading adhesive tape and preparation method thereof|

法律状态:

优先权:

---

申请号 | 申请日 | 专利标题

---

CN201811600331.3A|CN109437584B|2018-12-26|2018-12-26|Photovoltaic glass reflecting film with ultrahigh visible light reflectivity and preparation method thereof|

---