CN106928497A - 一种太阳能电池电极用有机载体及其制备方法 - Google Patents
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Abstract
本发明涉及太阳能电池技术领域,具体涉及一种太阳能电池电极用有机载体及其制备方法;所述有机载体包括如下重量百分数的原料:树脂20‑40%,有机溶剂50‑70%,粘结剂5‑20%,流平剂:1‑10%,表面活性剂:1‑5%;本发明提供的有机载体配方合理,有助于改善树脂与有机溶剂之间的界面张力,提高溶剂的悬浮性能,避免浆料中溶剂的析出。将本发明提供的有机载体应用于银浆中,可显著提高银浆的综合使用性能。
Description
技术领域
本发明涉及太阳能电池技术领域,具体涉及一种太阳能电池电极用有机载体及其制备方法。
背景技术
太阳能光伏技术(Photovoltaic)是将太阳能转化为电力的技术,其核心是可释放电子的半导体物质。作为太阳能光伏技术的主要应用形式,太阳能光伏电池具有正极和负极两层半导体,阳光照射在半导体上时,正极和负极的交界处产生电流,是一种能将太阳能转化为电能的半导体器件。太阳能电池背银浆料是太阳能电池电子浆料的主要组成部分,它在太阳能电池生产中主要是用来制作背面主栅,起到将铝背场收集的电流汇流导出的作用。由于背面主栅需要与金属焊条焊在一起串联成组件,因此,太阳能电池背银浆料影响了银层的可焊性、耐焊性、与硅基板的附着力以及导电性。有机载体是银浆的重要组成部分,是银浆中的第二大成份,用于太阳能电池正面栅线的银浆通常含有10-20 wt%的有机载体。它是一种将各具功能的助剂溶解在有机溶剂中的有机高分子溶液。它是起导电作用的金属粉体和起粘结作用的玻璃粉(或氧化物)的运载体,起着调节装料的粘度,控制浆料的流变性的作用。使固态的各种粉体混合物分散成具有流体特性的浆料,以便于通过丝网印刷机高速、高精度地印刷到基体上,形成所需要的线条。目前普遍存在的问题是浆料放置一段时间后,由于铝粉和有机溶剂的比重差异会有溶剂析出现象,表面发黑颜色不均匀,使用前必须搅拌很长时间,给使用带来了很大的不便,并且还有浆料成分不均匀所带来的隐患。
发明内容
本发明需要解决的技术问题在于提供一种防止溶剂析出的太阳能电池电极用有机载体,此外,本发明还提供了它的制备方法。
一种太阳能电池电极用有机载体,包括如下重量百分数的原料:树脂20-40% ,有机溶剂50-70%,粘结剂5-20% ,流平剂:1-10%,表面活性剂:1-5% 。
进一步的,所述的太阳能电池电极用有机载体,包括如下重量百分数的原料:树脂25-30% ,有机溶剂55-65%,粘结剂6-15% ,流平剂:2-6%,表面活性剂:2-4% 。
进一步的,所述的太阳能电池电极用有机载体,包括如下重量百分数的原料:树脂25% ,有机溶剂63%,粘结剂8% ,流平剂:2%,表面活性剂:2% 。
进一步的,所述树脂选自环氧树脂改性二醋酸纤维素、聚酯改性丙烯酸树脂、聚乙烯醇缩丁醛树脂中的其中一种。
进一步的,所述有机溶剂选自丁基卡必醇、丁基卡必醇醋酸酯、柠檬酸三丁酯、醋酸丁酯、丙二醇、1-甲基2-丙基-乙酸酯、乙二醇丁醚、甲氧基丙醇、二异丁酮中的至少一种。
进一步的,所述粘结剂选自乙基纤维素、羟甲基纤维素、硝化纤维素、醋酸丁酸纤维素、甲基丙烯酸树脂、醇酸树脂、松香树脂中的至少一种。
进一步的,所述流平剂选自三乙醇胺 聚丙烯酸乙酯、聚丙烯酸丁酯、聚丙烯酸2-乙基己酸、丙烯酸乙酯与丙烯酸丁酯共聚物和有机硅改性聚丙烯酸酯中的至少一种。
进一步的,所述表面活性剂选自单硬脂酸甘油酯、硬脂酸丁醇酯、聚乙二醇二硬脂酸中的任意一种。
一种太阳能电池电极用有机载体的制备方法,包括如下步骤:
(1)按配比分别计量各原料;
(2)按照先加有机溶剂、再加树脂,最后加粘结剂、流平剂和表面活性剂的顺序依次将原料投入搅拌分散装置中进行初步混合,形成可连续流动的浆料;
(3)在保持搅拌分散装置连续运行的同时,通过循环系统将上述浆料输送至研磨分散装置中对浆料进行精细研磨;
(4)浆料经精细研磨后再流回搅拌分散装置中继续搅拌分散;
(5)浆料在搅拌分散装置和研磨分散装置之间循环,直至浆料的粒径分布≤3微米;
(6)将浆料放在65-70℃的温度条件下搅拌0.5-1.5小时,得到均一的有机载体。
进一步的,所述步骤(2)中的搅拌速度为2500-3000r/min;分散时间为45-60min;所述步骤(3)中的研磨时间为30-60min。
本发明与现有技术相比具有的突出的有益效果是:
本发明提供的有机载体配方合理,有助于改善树脂与有机溶剂之间的界面张力,提高溶剂的悬浮性能,避免浆料中溶剂的析出。将本发明提供的有机载体应用于银浆中,可显著提高银浆的综合使用性能。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
实施例1:
一种太阳能电池电极用有机载体,包括如下重量百分数的原料:环氧树脂改性二醋酸纤维素40%,有机溶剂:丁基卡必醇50%,粘结剂:乙基纤维素3%,流平剂三乙醇胺1%,表面活性剂单硬脂酸甘油酯1%。
一种太阳能电池电极用有机载体的制备方法,包括如下步骤:
(1)按配比分别计量各原料;
(2)按照先加有机溶剂、再加树脂,最后加粘结剂、流平剂和表面活性剂的顺序依次将原料投入搅拌分散装置中进行初步混合,形成可连续流动的浆料;搅拌速度为2500r/min;分散时间为45min;
(3)在保持搅拌分散装置连续运行的同时,通过循环系统将上述浆料输送至研磨分散装置中对浆料进行精细研磨,研磨时间为30min;
(4)浆料经精细研磨后再流回搅拌分散装置中继续搅拌分散;
(5)浆料在搅拌分散装置和研磨分散装置之间循环,直至浆料的粒径分布≤3微米;
(6)将浆料放在70℃的温度条件下搅拌0.5小时,得到均一的有机载体。
实施例2:
一种太阳能电池电极用有机载体,包括如下重量百分数的原料:聚酯改性丙烯酸树脂20%,有机溶剂:丁基卡必醇醋酸酯20%、柠檬酸三丁酯40%,粘结剂:羟甲基纤维素4%、硝化纤维素6%,流平剂聚丙烯酸乙酯、聚丙烯酸丁酯6%,表面活性剂硬脂酸丁醇酯4%。
一种太阳能电池电极用有机载体的制备方法,包括如下步骤:
(1)按配比分别计量各原料;
(2)按照先加有机溶剂、再加树脂,最后加粘结剂、流平剂和表面活性剂的顺序依次将原料投入搅拌分散装置中进行初步混合,形成可连续流动的浆料;搅拌速度为3000r/min;分散时间为60min;
(3)在保持搅拌分散装置连续运行的同时,通过循环系统将上述浆料输送至研磨分散装置中对浆料进行精细研磨,研磨时间为60min;
(4)浆料经精细研磨后再流回搅拌分散装置中继续搅拌分散;
(5)浆料在搅拌分散装置和研磨分散装置之间循环,直至浆料的粒径分布≤3微米;
(6)将浆料放在65-70℃的温度条件下搅拌0.5-1.5小时,得到均一的有机载体。
实施例3:
一种太阳能电池电极用有机载体,包括如下重量百分数的原料:聚乙烯醇缩丁醛树脂30%,有机溶剂:柠檬酸三丁酯10%、醋酸丁酯40%,粘结剂:硝化纤维素、醋酸丁酸纤维素13%,流平剂聚丙烯酸丁酯2%,聚丙烯酸2-乙基己酸3%,表面活性剂聚乙二醇二硬脂酸:2%。
一种太阳能电池电极用有机载体的制备方法,包括如下步骤:
(1)按配比分别计量各原料;
(2)按照先加有机溶剂、再加树脂,最后加粘结剂、流平剂和表面活性剂的顺序依次将原料投入搅拌分散装置中进行初步混合,形成可连续流动的浆料;搅拌速度为2800r/min;分散时间为60min;
(3)在保持搅拌分散装置连续运行的同时,通过循环系统将上述浆料输送至研磨分散装置中对浆料进行精细研磨,研磨时间为30min;
(4)浆料经精细研磨后再流回搅拌分散装置中继续搅拌分散;
(5)浆料在搅拌分散装置和研磨分散装置之间循环,直至浆料的粒径分布≤3微米;
(6)将浆料放在65-70℃的温度条件下搅拌1小时,得到均一的有机载体。
实施例4:
一种太阳能电池电极用有机载体,包括如下重量百分数的原料:聚酯改性丙烯酸树脂28% ,有机溶剂:丙二醇22%、1-甲基2-丙基-乙酸酯34%,粘结剂:醇酸树脂、松香树脂6% ,流平剂:丙烯酸乙酯与丙烯酸丁酯共聚物6%,表面活性剂单硬脂酸甘油酯:4% 。
一种太阳能电池电极用有机载体的制备方法,包括如下步骤:
(1)按配比分别计量各原料;
(2)按照先加有机溶剂、再加树脂,最后加粘结剂、流平剂和表面活性剂的顺序依次将原料投入搅拌分散装置中进行初步混合,形成可连续流动的浆料;搅拌速度为2500r/min;分散时间为50min;
(3)在保持搅拌分散装置连续运行的同时,通过循环系统将上述浆料输送至研磨分散装置中对浆料进行精细研磨,研磨时间为40min;
(4)浆料经精细研磨后再流回搅拌分散装置中继续搅拌分散;
(5)浆料在搅拌分散装置和研磨分散装置之间循环,直至浆料的粒径分布≤3微米;
(6)将浆料放在65-70℃的温度条件下搅拌1小时,得到均一的有机载体。
实施例5:
一种太阳能电池电极用有机载体,包括如下重量百分数的原料:聚乙烯醇缩丁醛树脂26% ,有机溶剂:乙二醇丁醚20%,甲氧基丙醇40%,粘结剂:醇酸树脂2%,松香树脂4% ,流平剂:有机硅改性聚丙烯酸酯:4%,表面活性剂硬脂酸丁醇酯:4% 。
一种太阳能电池电极用有机载体的制备方法,包括如下步骤:
(1)按配比分别计量各原料;
(2)按照先加有机溶剂、再加树脂,最后加粘结剂、流平剂和表面活性剂的顺序依次将原料投入搅拌分散装置中进行初步混合,形成可连续流动的浆料;搅拌速度为2700r/min;分散时间为55min;
(3)在保持搅拌分散装置连续运行的同时,通过循环系统将上述浆料输送至研磨分散装置中对浆料进行精细研磨,研磨时间为50min;
(4)浆料经精细研磨后再流回搅拌分散装置中继续搅拌分散;
(5)浆料在搅拌分散装置和研磨分散装置之间循环,直至浆料的粒径分布≤3微米;
(6)将浆料放在65-70℃的温度条件下搅拌1小时,得到均一的有机载体。
实施例6:
一种太阳能电池电极用有机载体,包括如下重量百分数的原料:环氧树脂改性二醋酸纤维素25% ,有机溶剂:丁基卡必醇醋酸酯,1-甲基2-丙基-乙酸酯60%,粘结剂:甲基丙烯酸树脂4%,松香树脂3% ,流平剂:聚丙烯酸丁酯2%,聚丙烯酸2-乙基己酸2%,表面活性剂单硬脂酸甘油酯:4% 。
一种太阳能电池电极用有机载体的制备方法,包括如下步骤:
(1)按配比分别计量各原料;
(2)按照先加有机溶剂、再加树脂,最后加粘结剂、流平剂和表面活性剂的顺序依次将原料投入搅拌分散装置中进行初步混合,形成可连续流动的浆料;搅拌速度为3000r/min;分散时间为45min;
(3)在保持搅拌分散装置连续运行的同时,通过循环系统将上述浆料输送至研磨分散装置中对浆料进行精细研磨,研磨时间为60min;
(4)浆料经精细研磨后再流回搅拌分散装置中继续搅拌分散;
(5)浆料在搅拌分散装置和研磨分散装置之间循环,直至浆料的粒径分布≤3微米;
(6)将浆料放在65-70℃的温度条件下搅拌0.5小时,得到均一的有机载体。
实施例7:
一种太阳能电池电极用有机载体,包括如下重量百分数的原料:环氧树脂改性二醋酸纤维素、聚酯改性丙烯酸树脂、聚乙烯醇缩丁醛树脂中的其中一种25% ,有机溶剂:丁基卡必醇63%,粘结剂:乙基纤维素8% ,流平剂聚丙烯酸2-乙基己酸:2%,表面活性剂单硬脂酸甘油酯:2% 。
其制备方法,包括如下步骤:
(1)按配比分别计量各原料;
(2)按照先加有机溶剂、再加树脂,最后加粘结剂、流平剂和表面活性剂的顺序依次将原料投入搅拌分散装置中进行初步混合,形成可连续流动的浆料;搅拌速度为3000r/min;分散时间为45min;
(3)在保持搅拌分散装置连续运行的同时,通过循环系统将上述浆料输送至研磨分散装置中对浆料进行精细研磨,研磨时间为60min;
(4)浆料经精细研磨后再流回搅拌分散装置中继续搅拌分散;
(5)浆料在搅拌分散装置和研磨分散装置之间循环,直至浆料的粒径分布≤3微米;
(6)将浆料放在65-70℃的温度条件下搅拌1.5小时,得到均一的有机载体。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。
Claims (10)
1.一种太阳能电池电极用有机载体,其特征在于,包括如下重量百分数的原料:树脂20-40% ,有机溶剂50-70%,粘结剂5-20% ,流平剂:1-10%,表面活性剂:1-5% 。
2.根据权利要求1所述的太阳能电池电极用有机载体,其特征在于,包括如下重量百分数的原料:树脂25-30% ,有机溶剂55-65%,粘结剂6-15% ,流平剂:2-6%,表面活性剂:2-4%。
3.根据权利要求1所述的太阳能电池电极用有机载体,其特征在于,包括如下重量百分数的原料:树脂25% ,有机溶剂63%,粘结剂8% ,流平剂:2%,表面活性剂:2% 。
4.根据权利要求1-3中任一项所述的太阳能电池电极用有机载体,其特征在于,所述树脂选自环氧树脂改性二醋酸纤维素、聚酯改性丙烯酸树脂、聚乙烯醇缩丁醛树脂中的其中一种。
5.根据权利要求1-3中任一项所述的太阳能电池电极用有机载体,其特征在于,所述有机溶剂选自丁基卡必醇、丁基卡必醇醋酸酯、柠檬酸三丁酯、醋酸丁酯、丙二醇、1-甲基2-丙基-乙酸酯、乙二醇丁醚、甲氧基丙醇、二异丁酮中的至少一种。
6.根据权利要求1-3中任一项所述的太阳能电池电极用有机载体,其特征在于,所述粘结剂选自乙基纤维素、羟甲基纤维素、硝化纤维素、醋酸丁酸纤维素、甲基丙烯酸树脂、醇酸树脂、松香树脂中的至少一种。
7.根据权利要求1-3中任一项所述的太阳能电池电极用有机载体,其特征在于,所述流平剂选自三乙醇胺 聚丙烯酸乙酯、聚丙烯酸丁酯、聚丙烯酸2-乙基己酸、丙烯酸乙酯与丙烯酸丁酯共聚物和有机硅改性聚丙烯酸酯中的至少一种。
8.根据权利要求1-3中任一项所述的太阳能电池电极用有机载体,其特征在于,所述表面活性剂选自单硬脂酸甘油酯、硬脂酸丁醇酯、聚乙二醇二硬脂酸中的任意一种。
9.一种根据权利要求1-3中任一项所述的太阳能电池电极用有机载体的制备方法,其特征在于,包括如下步骤:
(1)按配比分别计量各原料;
(2)按照先加有机溶剂、再加树脂,最后加粘结剂、流平剂和表面活性剂的顺序依次将原料投入搅拌分散装置中进行初步混合,形成可连续流动的浆料;
(3)在保持搅拌分散装置连续运行的同时,通过循环系统将上述浆料输送至研磨分散装置中对浆料进行精细研磨;
(4)浆料经精细研磨后再流回搅拌分散装置中继续搅拌分散;
(5)浆料在搅拌分散装置和研磨分散装置之间循环,直至浆料的粒径分布≤3微米;
(6)将浆料放在65-70℃的温度条件下搅拌0.5-1.5小时,得到均一的有机载体。
10.根据权利要求9所述的太阳能电池电极用有机载体的制备方法,其特征在于,所述步骤(2)中的搅拌速度为2500-3000r/min;分散时间为45-60min;所述步骤(3)中的研磨时间为30-60min。
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CN113409987A (zh) * | 2021-08-19 | 2021-09-17 | 西安宏星电子浆料科技股份有限公司 | 结合剂、有机载体、正面导电银浆及其制备方法和太阳能电池 |
CN113409987B (zh) * | 2021-08-19 | 2021-11-16 | 西安宏星电子浆料科技股份有限公司 | 结合剂、有机载体、正面导电银浆及其制备方法和太阳能电池 |
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