CN114613871B - 一种轻质柔性光伏组件 - Google Patents
一种轻质柔性光伏组件 Download PDFInfo
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- CN114613871B CN114613871B CN202210346894.4A CN202210346894A CN114613871B CN 114613871 B CN114613871 B CN 114613871B CN 202210346894 A CN202210346894 A CN 202210346894A CN 114613871 B CN114613871 B CN 114613871B
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- titanium dioxide
- nano titanium
- photovoltaic module
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- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000002313 adhesive film Substances 0.000 claims abstract description 46
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 20
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 20
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 18
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 230000032683 aging Effects 0.000 claims abstract description 12
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims abstract description 11
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 10
- 239000012975 dibutyltin dilaurate Substances 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims abstract description 10
- 229940124543 ultraviolet light absorber Drugs 0.000 claims abstract description 9
- 239000002033 PVDF binder Substances 0.000 claims abstract description 8
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims abstract description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 25
- 238000002360 preparation method Methods 0.000 claims description 22
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 19
- 239000012528 membrane Substances 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 239000004408 titanium dioxide Substances 0.000 claims description 9
- 239000011787 zinc oxide Substances 0.000 claims description 9
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 8
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 7
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 7
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 6
- 239000003153 chemical reaction reagent Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 claims description 4
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 4
- 235000021355 Stearic acid Nutrition 0.000 claims description 4
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 claims description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 4
- 239000008117 stearic acid Substances 0.000 claims description 4
- -1 2-sec-butylphenyl-N-methyl amino Chemical group 0.000 claims description 3
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 3
- 229960000583 acetic acid Drugs 0.000 claims description 3
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
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- 150000002148 esters Chemical class 0.000 claims description 3
- 239000012362 glacial acetic acid Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 3
- 229960001763 zinc sulfate Drugs 0.000 claims description 3
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 239000005357 flat glass Substances 0.000 abstract description 12
- 230000006750 UV protection Effects 0.000 abstract description 9
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- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000007719 peel strength test Methods 0.000 description 2
- 150000008301 phosphite esters Chemical class 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000005341 toughened glass Substances 0.000 description 2
- 239000004971 Cross linker Substances 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
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- 230000007423 decrease Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
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- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C09J11/02—Non-macromolecular additives
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- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/08—Copolymers of ethene
- C09J123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
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- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08L2203/206—Applications use in electrical or conductive gadgets use in coating or encapsulating of electronic parts
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- 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
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Abstract
本申请涉及光伏组件领域,具体公开了一种轻质柔性光伏组件。轻质柔性光伏组件包括柔性前板玻璃、EVA胶膜、柔性电池片、柔性背板,所述柔性电池片位于所述柔性前板玻璃和所述柔性背板之间,且所述柔性电池片与所述柔性前板玻璃和所述柔性背板玻璃之间通过所述EVA胶膜固定,所述柔性背板包括BOPET基材、PVDF薄膜,所述PVDF薄膜通过所述EVA胶膜分别复合于所述BOPET基材的上下表面,所述EVA胶膜包括以下重量份原料制备而成:EVA树脂、交联剂、硅烷偶联剂、UV770紫外光吸收剂、抗氧剂、纳米二氧化钛、二月桂酸二丁基锡。本申请的轻质柔性光伏组件具有抗紫外、耐老化、使用年限长的优点。
Description
技术领域
本申请涉及光伏组件领域,更具体地说,它涉及一种轻质柔性光伏组件。
背景技术
随着化石能源的消耗以及使用过程中所带来的污染,人类对太阳能、风能等清洁能源的开发势在必行。
太阳能光伏架构是目前常见的太阳能转化为电能装置,其主要由合金边框、钢化玻璃、EVA胶膜、电池片、接线盒、背板组成。此类刚性太阳能电池板在组装时,需要先在两层钢化玻璃中间铺上EVA胶膜和电池片,然后进行组装。
在对钢性太阳能电池板进行组装时,组装器件的重量较大,移动和安装不方便,因此,在对刚性太阳能电池板的基础上进行了改进,采用了一种柔性光伏组件,通过与其他载体的全贴合,如应用于新能源汽车上的发电车顶,使柔性光伏组件与新能源汽车的车顶贴合,从而在保证发电效率的同时减轻重量。目前,制备柔性背板主要是在基材的两面通过EVA胶膜复合氟聚合物薄膜,从而使柔性背板具有重量轻、在一定的温度和压力下,依然能保持较好的强度和性能的优点。
针对上述相关技术,由于EVA的耐紫外能力弱,受到长时间太阳光照射容易变黄从而导致老化降解,导致太阳能组件的使用寿命难以提升,制约了光伏组件的发展。
发明内容
为解决相关技术中存在的EVA胶膜使用寿命短的问题,本申请提供一种轻质柔性光伏组件。
本申请提供的一种轻质柔性光伏组件采用如下的技术方案:
一种轻质柔性光伏组件,包括柔性前板玻璃、EVA胶膜、柔性电池片、柔性背板,所述柔性电池片位于所述柔性前板玻璃和所述柔性背板之间,且所述柔性电池片与所述柔性前板玻璃和所述柔性背板玻璃之间通过所述EVA胶膜固定,所述柔性背板包括BOPET基材、PVDF薄膜,所述PVDF薄膜通过所述EVA胶膜分别复合于所述BOPET基材的上下表面,所述EVA胶膜包括以下重量份原料制备而成:80-100份EVA树脂、3-6份交联剂、0.3-0.5份硅烷偶联剂、0.01-0.3份UV770紫外光吸收剂、0.5-2份抗氧剂、4-8份改性纳米二氧化钛、1-5份二月桂酸二丁基锡。
通过采用上述技术方案,由于采用EVA树脂的抗紫外线能力较弱,在光热氧的作用下自身容易发生降解从而导致颜色变黄,使EVA胶膜脱层,通过加入紫外光吸收剂、抗氧剂且通过使紫外光吸收剂和抗氧剂的相互作用,从而解决EVA胶膜变黄的问题;而加入适量的硅烷偶联剂解决脱层的问题,且通过调节交联剂和抗氧剂的配比,从而降低了残留的交联剂和抗氧剂相互作用从而使EVA胶膜变黄;最后,使加入的改性纳米二氧化钛均匀的分散在体系中,作为紫外线屏蔽剂降低紫外线使EVA胶膜变黄的问题;通过使紫外光吸收剂、抗氧剂和改性纳米二氧化钛相互配合,降低了EVA胶膜因长期受到紫外照射老化变黄的问题,提高了制备的光伏组件的耐候性;
优选的,所述EVA胶膜的制备方法,包括以下步骤:
a1、原料的准备,改性纳米二氧化钛的制备;
a2、将EVA树脂熔融,加入步骤a1中的改性纳米二氧化钛、交联剂、硅烷偶联剂、抗氧剂、UV770紫外光吸收剂、二月桂酸二丁基锡、促进剂,升高温度至为70-90℃,挤出并压制,制得EVA胶膜。
通过采用上述技术方案,在制备EVA胶膜的过程中,通过加入改性纳米二氧化钛,提高EVA树脂的抗老化和抗紫外的能力,同时,在EVA胶膜体系中,加入适量的二月桂酸二丁基锡,能够与抗氧剂起到良好的协同作用,降低在加工过程中受热降解,同时,降低制备的EVA胶膜在使用过程中受到热和氧的破坏。
优选的,步骤a1中改性纳米二氧化钛的制备,包括以下步骤:
b1、获取原料纳米二氧化钛;
b2、向硬脂酸中加入甲苯、步骤b1中的纳米二氧化钛,搅拌均匀;
b3、向步骤b2中加入正丁醇,搅拌均匀,升高温度至50-80℃,加热7-10h,烘干,得改性纳米二氧化钛,对改性纳米二氧化钛进行保温处理,保温温度为40-60℃。
通过采用上述技术方案,通过对纳米二氧化钛进行表面接枝改性,提高纳米二氧化钛在EVA胶膜液体系中的分散度,降低纳米二氧化钛团聚,使抗紫外线能力下降的可能性。
优选的,步骤b1中纳米二氧化钛的获取,包括以下步骤:
c1、将无水乙醇、冰醋酸加入钛酸四丁酯溶液中,搅拌均匀,得试剂A;将无水乙醇、去离子水、硫酸锌混合均匀后加入至试剂A中,搅拌均匀,陈化,得二氧化钛凝胶;
c2、将步骤c1中制得的二氧化钛凝胶烘干,烘干温度为70-100℃;
c3、将步骤c2中制得的二氧化钛研磨成粉末,煅烧,得纳米二氧化钛粉末。
通过采用上述技术方案,在制备纳米二氧化钛的过程中,通过掺杂锌离子,使电子与空穴更易复合,从而提高光催化效果,进一步的提高光伏组件的耐候性。
优选的,步骤a2中还加入了三乙醇胺和费托蜡,所述高熔点费托蜡为60号费托蜡、70号费托蜡、80号费托蜡、90号费托蜡中的一种或多种。
通过采用上述技术方案,通过加入三乙醇胺,从而调节EVA胶膜体系的酸碱度,降低酸类助剂对电池电极的腐蚀,同时,高熔点费托蜡的加入,在提高EVA胶膜的耐高温性能的同时,有利于改善EVA胶膜体系融化时的粘度,便于加工,降低了制备EVA胶膜工艺的难度。
优选的,所述交联剂包括过氧化苯甲酰、过氧化二异丙苯、2-仲丁基苯基-N-甲基氨基酸酯、BIBP中的一种或多种。
通过采用上述技术方案,通过采用交联剂,发生交联反应,使产物变为不溶的交联聚合物,提高形成EVA胶膜的力学性能,降低光伏背板在弯曲时脱胶的可能性,同时,提高制备的EVA胶膜的热稳定性和耐候性,进而提高EVA胶膜的使用年限。
优选的,所述步骤a2中加入了促进剂,所述促进剂包括氧化锌、三烯丙基异氰脲酸酯、三羟甲基丙烷三甲基丙烯酸酯中的一种或多种。
通过采用上述技术方案,通过加入促进剂,降低固化温度,从而抑制交联剂的副反应,缩短EVA胶膜固化的时间,提高交联效果。
优选的,所述交联剂与所述促进剂的重量比为10:1-3。
通过采用上述技术方案,由于促进剂可对交联剂的交联效应起到促进作用,与交联剂起到配合作用,提高交联效率,但是当促进剂的含量过高时,反而会抑制交联剂的催化效率,因此,需调控交联剂和促进剂的重量比,在降低成本的同时,提高交联效率。
优选的,所述EVA树脂中的VA含量为28-33%。
通过采用上述技术方案,由于VA的含量会对EVA的性能有较大的影响,且VA属于极性基团,随时VA含量的增大,会使EVA的性能发生变化,如当VA含量增加,会使耐热变形能力和软化点下降,但是会使抗环境应力提高,进而通过调节VA的含量,从而使EVA具有较好的性能,进一步的提高光伏组件的耐候性能。
优选的,所述抗氧剂包括抗氧剂1010和抗氧剂168。
通过采用上述技术方案,由于在EVA胶膜生产的过程中,发生交联的同时,氧化破坏也会同时发生,因此,通过加入抗氧剂,从而避免氧化产生新的交联或自由基降解化合物,且加入的抗氧剂1010为高分子量受阻酚类抗氧剂,抗氧剂168为亚磷酸酯类抗氧剂,两者具有较好的协同效应,提高抗氧化效果;同时,加入的抗压氧化与紫外线吸收剂相互配合,进一步的降低了EVA胶膜老化变黄的可能性,提高了EVA胶膜形成胶膜的抗紫外和耐老化性能。
综上所述,本申请具有以下有益效果:
1、由于本申请制备EVA胶膜的过程中,采用紫外光吸收剂和抗氧剂相协同,同时,加入适量的二月桂酸二丁基锡,提高了EVA胶膜的光稳定性和抗紫外线能力,进而提高了制备的EVA胶膜的耐候性;
2、本申请中优选采用预处理纳米二氧化钛,通过在纳米二氧化钛中掺杂锌离子,提高了纳米二氧化钛的紫外光吸收能力,同时,通过对纳米二氧化钛进行改性,提高了纳米二氧化钛的分散性能和抗紫外性能,降低了纳米二氧化钛在EVA胶膜中团聚的可能性。
具体实施方式
原料
表1是本申请原料及CAS号
原料 | CAS号 |
二月桂酸二丁基锡 | 77-58-7 |
过氧化苯甲酰 | 2685-64-5 |
过氧化二异丙苯 | 80-43-3 |
2-仲丁基苯基-N-甲基氨基酸酯 | 3766-81-2 |
BIBP | 2212-81-9 |
氧化锌 | 1314-13-2 |
三烯丙基异氰脲酸酯 | 1025-15-6 |
三羟甲基丙烷三甲基丙烯酸酯 | 3290-92-4 |
硬脂酸 | 1957-11-4 |
钛酸四丁酯 | 5593-70-4 |
三乙醇胺 | 102-71-6 |
抗氧剂1010 | 6683-19-8 |
抗氧剂168 | 31570-04-4 |
硅烷偶联剂选用型号为KH-560的硅烷偶联剂;
费托蜡选用80号费托蜡;
柔性前板玻璃采用上海卷柔新技术光电有限公司所生产的柔性玻璃;
柔性电池片可采用苏州东鸿光伏科技有限公司的层压太阳能电池板;
制备例
制备例1,纳米二氧化钛的制备,包括以下步骤:
c1、将无水乙醇、冰醋酸加入钛酸四丁酯溶液中,搅拌均匀,得试剂A;将无水乙醇、去离子水、硫酸锌混合均匀后通过缓慢搅拌加入至试剂A中,搅拌均匀,陈化,得二氧化钛凝胶;
c2、将步骤c1中制得的二氧化钛凝胶烘干,烘干温度为90℃;
c3、将步骤c2中制得的二氧化钛采用球磨机研磨成粉末,煅烧,得纳米二氧化钛粉末。
制备例2,改性纳米二氧化钛的制备,包括以下步骤:
b1、选用市面出售的纳米二氧化钛,市面出售的纳米二氧化钛的目数和制备例1制备的纳米二氧化钛目数相等,表面清洁,烘干;
b2、向硬脂酸中加入甲苯、步骤b1中获得的纳米二氧化钛,搅拌均匀;
b3、向步骤b2中加入正丁醇,搅拌均匀,升高温度至70℃,加热8h,烘干,得改性纳米二氧化钛,对改性纳米二氧化钛进行保温处理,保温温度为50℃。
制备例3,改性纳米二氧化钛的制备,与制备例2的不同之处在于:步骤b1中采用的是制备例1制备的纳米二氧化钛。
实施例
EVA胶膜由以下重量份原料制备而成:90gEVA树脂、EVA树脂中的VA含量为30%,4.5g交联剂过氧化二异丙苯、0.4g硅烷偶联剂KH-560、0.2gUV770紫外光吸收剂、抗氧剂包括0.8g抗氧剂1010、0.4g抗氧剂168、5g制备例2制备的纳米二氧化钛、3g二月桂酸二丁基锡、0.45g氧化锌、1g三乙醇胺、3g80号费托蜡。
实施例1,轻质柔性光伏组件包括柔性前板玻璃、EVA胶膜、柔性电池片、柔性背板,本申请中的柔性前板玻璃为高透光度的柔性前板玻璃,电池片可选用柔性电池片,柔性前板玻璃和柔性电池片均可通过市场采购获得;柔性背板包括BOPET基材和PVDF薄膜,PVDF薄膜通过EVA胶膜分别粘贴复合于BOPET基材的上下表面,在柔性电池片的两侧均粘贴EVA胶膜,并通过EVA胶膜热熔将柔性前板玻璃和柔性背板复合粘贴于柔性电池片的上下表面。
EVA胶膜的制备方法,包括以下步骤:
a1、选用制备例2制备的5g改性纳米二氧化钛,并对改性纳米二氧化钛进行表面清洗,烘干;
a2、将90gEVA树脂加入双螺杆挤出机中熔融,其中EVA树脂中的VA含量为30%,加入步骤a1中的5g改性纳米二氧化钛、4.5g交联剂过氧化二异丙苯、0.4g硅烷偶联剂、0.8g抗氧剂1010、0.4g抗氧剂168、0.2gUV770紫外光吸收剂、3g二月桂酸二丁基锡,控制双螺杆挤出机的温度为85℃,模头挤出胶膜后牵引至压辊以及收卷装置,制得EVA胶膜。
实施例2,实施例2与实施例1的不同之处在于,步骤a1中采用的是制备例3制备例的改性纳米二氧化钛。
实施例3,实施例3与实施例2的不同之处在于,步骤a2中还加入了1g三乙醇胺和3g80号费托蜡。
实施例4,实施例4与实施例3的不同之处在于,步骤a2中还加入了0.45g促进剂氧化锌。
实施例5,实施例5与实施例4的不同之处在于,步骤a2中加入了0.9g促进剂氧化锌。
实施例6,实施例6与实施例4的不同之处在于,步骤a2中加入了1.35g促进剂氧化锌。
对比例
对比例1,对比例1与实施例1的不同之处在于,对比例1的步骤a1中的纳米二氧化钛采用的是未改性市售纳米二氧化钛,对比例1和实施例1所采用的纳米二氧化钛的目数相同。
对比例2,对比例2与实施例4的不同之处在于,对比例2的步骤a2中加入的氧化锌为0.045g。
对比例3,对比例3与实施例4的不同之处在于,对比例3的步骤a2中加入的氧化锌为2.25g。
性能检测试验
剥离强度测试试验根据国标《GB/T 2790-1995胶粘剂180°剥离强度试验方法》进行,将所测试的EVA胶膜的两侧分别与被粘材料粘接组成胶接试样。其中,一个被粘材料为柔性前板玻璃,另一个被粘材料为背板,先将背板固定,再将其固定在夹头上,接着将柔性前板玻璃夹紧在另一夹头上。
选用的试样规格为柔性前板玻璃面积为800mm×400mm,选用了两组EVA胶膜粘贴,每组EVA胶膜的粘贴面积为50×800mm,背板可选用于EVA胶膜全贴合且面积相同的背板。
使夹头间试样准确定位,以保证所施加的拉力均匀的分布在使试样的宽度上,开动机器,使上下夹头以恒定的速率分离。夹头的分离速率为100mm/min,计算相应的剥离强度值。
耐老化测试
试验按照国标《GB/T 41203-2021光伏组件封装材料加速老化试验方法》进行,采用的设备为紫外高温高湿老化试验箱,光伏试样由玻璃、EVA胶膜、背板依次叠合后形成,采用的尺寸为300mm×300mm,放入真空层压机内,按产品要求的固化温度和时间进行固化交联,交联度>75%,制得层压件,测试试样的黄变指数△TI。
检测方法/试验方法
表2是实施例1-6的黄变性能测试
表3是对比例1-3的黄变性能测试
表4是实施例1-6的剥离强度性能测试
表5是对比例1-3的剥离强度性能测试
结合实施例1-2和对比例1并结合表2-5可以看出,通过加入纳米二氧化钛并对纳米二氧化钛进行改性处理,提高了纳米二氧化钛的亲水性能和分散性能,同时,降低了加入的硅烷偶联剂与纳米二氧化钛交联,使纳米二氧化钛团聚,而自制的纳米二氧化钛,提高了运用于EVA胶膜体系的光催化性能,进而使获得的EVA胶膜具有良好的抗紫外性能和粘结强度。
结合实施例2、3并结合表2、4可以看出,通过在EVA胶膜中加入三乙醇胺和80号费托蜡,调整了EVA胶膜体系的粘度,使制备的EVA胶膜体系性能更佳。
结合实施例4-6、对比例2、3并结合表2-5可以看出,通过加入促进剂,抑制了交联过程的副反应,提高了交联效率,进而抑制了EVA胶膜的黄变、提高了交联强度。而当促进剂含量过高时,反而会影响交联过程,使交联剂的残留增多。因此,交联剂与促进剂的最佳重量比为10:1。
本具体实施例仅仅是对本申请的解释,其并不是对本申请的限制,本领域技术人员在阅读完本说明书后可以根据需要对本实施例做出没有创造性贡献的修改,但只要在本申请的权利要求范围内都受到专利法的保护。
Claims (8)
1.一种轻质柔性光伏组件,包括柔性前板玻璃、EVA胶膜、柔性电池片、柔性背板,所述柔性电池片位于所述柔性前板玻璃和所述柔性背板之间,且所述柔性电池片与所述柔性前板玻璃和所述柔性背板玻璃之间通过所述EVA胶膜固定,其特征在于:所述柔性背板包括BOPET基材、PVDF薄膜,所述PVDF薄膜通过所述EVA胶膜分别复合于所述BOPET基材的上下表面,所述EVA胶膜包括以下重量份原料制备而成:80-100份EVA树脂、3-6份交联剂、0.3-0.5份硅烷偶联剂、0.01-0.3份UV770紫外光吸收剂、0.5-2份抗氧剂、4-8份改性纳米二氧化钛、1-5份二月桂酸二丁基锡;
所述EVA胶膜的制备方法,包括以下步骤:
a1、原料的准备,改性纳米二氧化钛的制备;
a2、将EVA树脂熔融,加入步骤a1中的改性纳米二氧化钛、交联剂、硅烷偶联剂、抗氧剂、UV770紫外光吸收剂、二月桂酸二丁基锡、促进剂,升高温度至为70-90℃,挤出并压制,制得EVA胶膜;
步骤a1中改性纳米二氧化钛的制备,包括以下步骤:
b1、获取原料纳米二氧化钛;
b2、向硬脂酸中加入甲苯、步骤b1中的纳米二氧化钛,搅拌均匀;
b3、向步骤b2中加入正丁醇,搅拌均匀,升高温度至50-80℃,加热7-10h,烘干,得改性纳米二氧化钛,对改性纳米二氧化钛进行保温处理,保温温度为40-60℃。
2.根据权利要求1所述的一种轻质柔性光伏组件,其特征在于:步骤b1中纳米二氧化钛的获取,包括以下步骤:
c1、将无水乙醇、冰醋酸加入钛酸四丁酯溶液中,搅拌均匀,得试剂A;将无水乙醇、去离子水、硫酸锌混合均匀后加入至试剂A中,搅拌均匀,陈化,得二氧化钛凝胶;
c2、将步骤c1中制得的二氧化钛凝胶烘干,烘干温度为70-100℃;
c3、将步骤c2中制得的二氧化钛研磨成粉末,煅烧,得纳米二氧化钛粉末。
3.根据权利要求1所述的一种轻质柔性光伏组件,其特征在于:步骤a2中还加入了三乙醇胺和费托蜡,所述费托蜡为60号费托蜡、70号费托蜡、80号费托蜡、90号费托蜡中的一种或多种。
4.根据权利要求1所述的一种轻质柔性光伏组件,其特征在于:所述交联剂包括过氧化苯甲酰、过氧化二异丙苯、2-仲丁基苯基-N-甲基氨基酸酯、BIBP中的一种或多种。
5.根据权利要求1所述的一种轻质柔性光伏组件,其特征在于:所述步骤a2中加入了促进剂,所述促进剂包括氧化锌、三烯丙基异氰脲酸酯、三羟甲基丙烷三甲基丙烯酸酯中的一种或多种。
6.根据权利要求5所述的一种轻质柔性光伏组件,其特征在于:所述交联剂与所述促进剂的重量比为10:1-3。
7.根据权利要求1所述的一种轻质柔性光伏组件,其特征在于:所述EVA树脂中的VA含量为28-33%。
8.根据权利要求1所述的一种轻质柔性光伏组件,其特征在于:所述抗氧剂包括抗氧剂1010和抗氧剂168。
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