CN106833164B - 一种氟树脂双组分涂料及其在光伏组件背板上的应用 - Google Patents
一种氟树脂双组分涂料及其在光伏组件背板上的应用 Download PDFInfo
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- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- VAZSKTXWXKYQJF-UHFFFAOYSA-N ammonium persulfate Chemical group [NH4+].[NH4+].[O-]S(=O)OOS([O-])=O VAZSKTXWXKYQJF-UHFFFAOYSA-N 0.000 description 1
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- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 235000019394 potassium persulphate Nutrition 0.000 description 1
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- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/18—Homopolymers or copolymers of tetrafluoroethene
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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- C08L2203/204—Applications use in electrical or conductive gadgets use in solar cells
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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
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- Y02E10/50—Photovoltaic [PV] energy
Abstract
本发明涉及一种氟树脂双组分涂料及其在光伏组件背板上的应用，该氟树脂双组分涂料由A组分和B组分组成，按重量份计，A组分的原料配方包括以下组分：氟树脂40‑60份；钛白粉20‑35份；稀释剂15‑30份；聚氨酯丙烯酸酯3‑6份；硅烷偶联剂0.5‑2份；润湿分散剂0.5‑2份；消泡剂0.1‑0.5份；流平剂0.1‑0.5份；按重量份计，所述B组分的原料配方包括以下组分：催干剂0.1‑0.5份；引发剂0.1‑0.5份；异氰酸酯固化剂1‑10份。本发明涂料制成的涂层固化后形成互穿聚合物网络结构。使用该双组分涂料制成的涂层表面光滑无斑痕不返粘，耐溶剂性能好，附着力优异，与EVA初期剥离力大于50N/cm，48小时PCT加速老化后，与EVA的剥离强度不小于20N/cm，各项指标均达到或优于背板涂层的行业要求。
Description
技术领域
本发明涉及一种氟树脂双组分涂料及其在光伏组件背板上的应用。
背景技术
光伏组件(即太阳能电池组件)背板，在太阳能电池中主要其密封、绝缘、防水等的作用，而由于太阳能电池直接暴露在空气中，易受到水蒸气、酸性气体、高低温和紫外线等的侵蚀，造成其光电转化性能衰竭，因此太阳能电池背板的保护作用很重要，研究也很有意义。现有的太阳能电池背板用涂层的附着力差，涂层硬度低，使用过程中易划伤，且导热性能差，与EVA结合力小，老化易脱层。为了改善涂层附着力，有人在涂料配方中添加附着力促进剂及聚酯多元醇，如中国专利CN103805043A公开了一种氟碳双组分涂料及其应用，该氟碳双组分涂料由甲、乙两组份组成，其中甲组份由异氰酸酯固化剂50～70份，稀释剂A 30～50份组成；乙组份由以下组分组成氟碳树脂35～50份，多元醇树脂4～12份，附着力促进剂1～4份，稀释剂B 20～30份，无机填料20～35份，助剂0.505～3.05份组成，其中，助剂由质量配比如下的组分制成：催化剂0.005～0.25份，润湿分散剂0.5～2份，流平剂0～0.5份，并提供了所述氟碳双组分涂料在制备涂覆型太阳能电池背板上的应用，甲、乙组分分别储存，涂覆前按照NCO/OH的摩尔比为0.6～1.5：1.0进行配比。该氟碳双组分涂料中加入了聚酯多元醇与附着力促进剂，能够一定程度上提高其与基材之间的附着力，但一方面，整个体系的相容性不够理想，从而影响涂料的贮存稳定性；另一方面，加入的聚酯多元醇或附着力促进剂等，没有参与主体氟树脂固化的大分子网络结构，导致其耐老化，尤其耐湿热老化后的剥离性能表现不佳。
发明内容
本发明所要解决的技术问题是克服现有技术的不足，提供一种改进的氟树脂双组分涂料。
本发明还提供一种光伏组件背板及其制备方法。
为解决以上技术问题，本发明采用如下技术方案：
一种氟树脂双组分涂料，由A组分和B组分组成，按重量份计，所述A组分的原料配方包括以下组分：
按重量份计，所述B组分的原料配方包括以下组分：
催干剂 0.1-0.5份；
引发剂 0.1-0.5份；
异氰酸酯固化剂 1-10份。
本发明中，所述氟树脂为溶剂型氟碳树脂，氟含量25-45％，酸值2-10mgKOH/g，羟值40-60mgKOH/g。
所述氟树脂为三氟氯乙烯或四氟乙烯与其他乙烯基醚类或酯类单体共聚的无规共聚物。
本发明中，所述氟树脂预溶于酯类或苯类溶剂中，固含量为45～55％。
本发明中，所述聚氨酯丙烯酸酯为聚醚或聚酯型丙烯酸酯，官能度≥2，所述聚醚或聚酯由聚氧化丙烯多元醇、聚氧化乙烯多元醇、聚四氢呋喃及其共聚醚多元醇、聚己内酯多元醇、己二酸系聚酯多元醇、聚碳酸酯多元醇中的一种或几种提供。
本发明中，所述硅烷偶联剂为乙烯基硅烷偶联剂。优选地，所述硅烷偶联剂为乙烯基三乙氧基硅烷、γ-甲基丙烯酰氧基丙基三甲氧基硅烷、乙烯基三甲氧基硅烷、乙烯基三(β-甲氧基乙氧基)硅烷中的一种或几种的组合。
本发明中，所述引发剂为过氧化物类或偶氮类热裂解型自由基引发剂。优选地，所述引发剂为过硫酸铵、过硫酸钾、过氧化苯甲酰、过氧化苯甲酰叔丁酯、过氧化甲乙酮、偶氮二异丁腈、偶氮二异庚腈、偶氮二异丁酸二甲酯中的一种或几种的组合。
本发明中，所述异氰酸酯类固化剂为二异氰酸酯或多异氰酸酯化合物。优选地，所述异氰酸酯类固化剂为六亚甲基二异氰酸酯(HDI)、六亚甲基二异氰酸酯加成物、六亚甲基二异氰酸酯三聚体(HDI三聚体)、异佛尔酮二异氰酸酯(IPDI)、异佛尔酮二异氰酸酯三聚体(IPDI三聚体)中的一种或几种的组合。
本发明中，所述稀释剂为乙酸乙酯、乙酸丁酯、丙二醇甲醚醋酸酯、甲苯、二甲苯中一种或几种的组合。
本发明中，所述催干剂为三乙胺、三亚乙基二胺、二月桂酸二丁锡、辛酸亚锡、异辛酸锌、异辛酸铋等叔胺类或有机金属类催化剂中的一种或几种组合。
本发明中，所述流平剂选自BYK公司，牌号为BYK-333。
本发明采取的另一种技术方案是：
上述氟树脂双组分涂料在光伏组件背板上的应用。
本发明采取的又一种技术方案是：
一种光伏组件背板，包括基材及涂覆在所述基材表面的涂料涂层，所述涂料涂层为上述氟树脂双组分涂料制成。
优选地，所述基材为聚对苯二甲酸乙二醇酯(PET)膜。
本发明采取的又另一技术方案是：
如上述光伏组件背板的制备方法，所述制备方法包括以下步骤：
(1)氟树脂双组分涂料的制备：按配方，将氟树脂、钛白粉、聚氨酯丙烯酸酯、硅烷偶联剂、润湿分散剂、消泡剂、流平剂、稀释剂混合均匀，研磨至颗粒细度≤10μm，作为A组分，备用；按配方，将异氰酸酯固化剂、引发剂、催干剂混合均匀，作为B组分，备用；
(2)将A组分和B组分按质量比为5～10:1混合均匀，然后涂覆于基材上，于60℃-180℃下进行干燥，固化，即得所述光伏组件背板。
优选地，步骤(1)中，所述稀释剂将A组分体系的固含量调整至60～80％。
优选地，步骤(2)中，A组分和B组分混合均匀后在5h内进行涂覆。
优选地，步骤(2)中，所述干燥在梯度升温箱中进行，升温方式为蒸汽或电加热。
由于上述技术方案的实施，本发明与现有技术相比具有如下优点：
本发明氟树脂双组分涂料制成的涂层固化后具有互穿聚合物网络结构，主体氟树脂、异氰酸酯固化剂交联后形成的三维网络结构与聚氨酯丙烯酸酯、硅烷偶联剂、引发剂经交联反应形成的三维网络结构相互缠解，分子链彼此贯穿，使得网络结构更加稳定牢固且硅烷偶联剂以化学键方式引入交联网络骨架，提高粉体材料在涂料体系中分散稳定性的同时，提高涂层的耐老化性能及其与EVA的剥离强度。
本发明氟树脂双组分涂料制成的涂层表面光滑无斑痕不返粘，耐黄变、耐溶剂性能好，附着力零级，与EVA初期剥离力大于50N/cm，48小时PCT加速老化后，与EVA的剥离强度不小于20N/cm，各项指标均达到或优于背板涂层的行业要求。
具体实施方式
以下结合具体实施例对本发明进行进一步描述。
实施例1
本实施例提供一种氟树脂双组分涂料，采用的原料及配方参见表1，其中，
氟树脂来源于长兴化学工业(中国)有限公司，牌号为41011。
聚氨酯丙烯酸酯来源于江苏三木化工股份有限公司，牌号为6205。
硅烷偶联剂为乙烯基三甲氧基硅烷。
引发剂为过氧化苯甲酰叔丁酯。
异氰酸酯固化剂为HDI三聚体。
本实施例中，A组分的制备：按配方，将氟树脂、钛白粉、聚氨酯丙烯酸酯、硅烷偶联剂、润湿分散剂、消泡剂、流平剂、稀释剂混合均匀，研磨至颗粒细度≤10μm，作为A组分，备用。
B组分的制备：按配方，将异氰酸酯固化剂、引发剂、催干剂混合均匀，作为B组分，备用。
光伏组件背板的制备：将A组分和B组分按质量比10：1混合均匀，然后涂覆于基材上，于60℃-180℃的梯度温度箱中进行加热强化干燥与固化，干燥固化后即得光伏组件背板，涂层厚度约为5μm。
涂覆过程中，可用稀释剂进一步调整粘度以适应涂覆生产线。
实施例2
本实施例提供一种氟树脂双组分涂料，采用的原料及配方参见表1，其中，
氟树脂来源于日本大金氟树脂公司，牌号为GK570。
聚氨酯丙烯酸酯来源于江苏三木化工股份有限公司，牌号为6202。
硅烷偶联剂为γ-甲基丙烯酰氧基丙基三甲氧基硅烷。
引发剂为偶氮二异丁腈。
异氰酸酯固化剂为IPDI。
本实施例中，制备光伏组件背板的A组分和B组分的质量比为5:1，其他同实施例1。
实施例3
本实施例提供一种氟树脂双组分涂料，采用的原料及配方参见表1，其中，
氟树脂来源于长兴化学工业(中国)有限公司，牌号为41018。
聚氨酯丙烯酸酯来源于江苏三木化工股份有限公司，牌号为6205。
硅烷偶联剂为乙烯基三乙氧基硅烷和乙烯基三(β-甲氧基乙氧基)硅烷按质量比为1：1的组合。
引发剂为偶氮二异丁腈。
本实施例中，制备光伏组件背板的A组分和B组分的质量比为5:1，其他同实施例1。
实施例4
本实施例提供一种氟树脂双组分涂料，采用的原料及配方参见表1，其他同实施例1。
本实施例中，A组分、B组分、光伏组件背板的制备方法同实施例1。
对比例1
本对比例提供一种氟树脂双组分涂料，本对比例中不添加硅烷偶联剂，其他同实施例1。
本对比例中，A组分、B组分、光伏组件背板的制备方法同实施例1。
对比例2
本对比例提供一种氟树脂双组分涂料，本对比例中不添加聚氨酯丙烯酸酯，其他同实施例1。
本对比例中，A组分、B组分、光伏组件背板的制备方法同实施例1。
对比例3
本对比例提供一种氟树脂双组分涂料，本对比例中不添加硅烷偶联剂，加入1份的附着力促进剂PN-805(南京品宁)，其他同实施例1。
本对比例中，A组分、B组分、光伏组件背板的制备方法同实施例1。
表1
对实施例1～4和对比例1～3的涂料和光伏组件背板进行性能测试，测试结果参见表2。
表2
以上对本发明做了详尽的描述，其目的在于让熟悉此领域技术的人士能够了解本发明的内容并加以实施，并不能以此限制本发明的保护范围，且本发明不限于上述的实施例，凡根据本发明的精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。
Claims (6)
1.一种氟树脂双组分涂料，由A组分和B组分组成，其特征在于，按重量份计，所述A组分的原料配方包括以下组分：
氟树脂 40-60份；
钛白粉 20-35 份；
稀释剂 15-30份；
聚氨酯丙烯酸酯 3-6份；
硅烷偶联剂 0.5-2份；
润湿分散剂 0.5-2份；
消泡剂 0.1-0.5份；
流平剂 0.1-0.5份；
按重量份计，所述B组分的原料配方包括以下组分：
催干剂 0.1-0.5份；
引发剂 0.1-0.5份；
异氰酸酯固化剂 1-10份；
其中，所述氟树脂为氟碳树脂，氟含量25-45%，酸值2-10 mgKOH/g，羟值40-60 mgKOH/g，所述硅烷偶联剂为乙烯基硅烷偶联剂；
所述聚氨酯丙烯酸酯为聚醚或聚酯型丙烯酸酯，官能度≥2，所述聚醚或聚酯由聚氧化丙烯多元醇、聚氧化乙烯多元醇、聚四氢呋喃及其共聚醚多元醇、聚己内酯多元醇、己二酸系聚酯多元醇、聚碳酸酯多元醇中的一种或几种提供。
2.根据权利要求1所述的氟树脂双组分涂料，其特征在于，所述硅烷偶联剂为乙烯基三乙氧基硅烷、γ-甲基丙烯酰氧基丙基三甲氧基硅烷、乙烯基三甲氧基硅烷、乙烯基三（β-甲氧基乙氧基）硅烷中的一种或几种的组合。
3.根据权利要求1所述的氟树脂双组分涂料，其特征在于，所述引发剂为过硫酸铵、过硫酸钾、过氧化苯甲酰、过氧化苯甲酰叔丁酯、过氧化甲乙酮、偶氮二异丁腈、偶氮二异庚腈、偶氮二异丁酸二甲酯中的一种或几种的组合。
4.权利要求1~3中任一项权利要求所述的氟树脂双组分涂料在光伏组件背板上的应用。
5.一种光伏组件背板，包括基材及涂覆在所述基材表面的涂料涂层，其特征在于：所述涂料涂层为权利要求1~3中任一项权利要求所述的氟树脂双组分涂料制成。
6.如权利要求5所述的光伏组件背板的制备方法，其特征在于，所述制备方法包括以下步骤：
（1）氟树脂双组分涂料的制备：按配方，将氟树脂、钛白粉、聚氨酯丙烯酸酯、硅烷偶联剂、润湿分散剂、消泡剂、流平剂、稀释剂混合均匀，研磨至颗粒细度≤10μm，作为A组分，备用；按配方，将异氰酸酯固化剂、引发剂、催干剂混合均匀，作为B组分，备用；
（2）将A组分和B组分按质量比5~10:1混合均匀，然后涂覆于基材上，于60℃-180℃下进行干燥，固化，即得所述光伏组件背板。
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| CN103805043A (zh) * | 2013-12-31 | 2014-05-21 | 杭州福斯特光伏材料股份有限公司 | 一种氟碳双组分涂料及其应用 |
| CN104194599A (zh) * | 2014-08-20 | 2014-12-10 | 杭州福斯特光伏材料股份有限公司 | 一种氟碳涂层的制备方法 |
| CN104201224A (zh) * | 2014-08-20 | 2014-12-10 | 杭州福斯特光伏材料股份有限公司 | 一种太阳能电池组件用透明背板 |
| CN104538491A (zh) * | 2014-12-13 | 2015-04-22 | 乐凯胶片股份有限公司 | 一种太阳能电池背板修补液 |
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