CN106336816A - 一种用于光伏组件封装的粘合剂 - Google Patents
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Abstract
本发明公开了一种用于光伏组件封装的粘合剂,其组成的重量份数比为:乙烯醋酸乙烯酯30‑45份,波长转换剂10‑25份,丙烯酸异辛酯5‑15份,醋酸乙烯酯5‑20份,消泡剂5‑10份,助剂5‑10份;其中,所述波长转换剂包括上波长转换剂和下波长转换剂,所述上波长转换剂将波长在红外波段及大于红外波段的光转化为可见光,所述下波长转换剂将波长在紫外波段及小于紫外波段的光转化为可见光;所述上波长转换剂和下波长转换剂的重量比为1:1。在封装时通过封装粘合剂中的波长转换剂将太阳能电池片无法转换波长的光转换为可以吸收的可见光,提高了太阳能电池片对光的利用率,另外,还可以通过转换上述波长的光,防止组件发热从而提高组件的使用寿命。
Description
技术领域
本发明涉及粘合剂领域,尤其涉及一种用于光伏组件封装的粘合剂。
背景技术
晶体硅分为单晶硅、多晶硅、和非晶硅。其中,单晶硅太阳能电池是当前开发得最快的一种太阳能电池,它的构造和生产工艺已定型,产品已广泛用于空间和地面。
上述晶体硅可用于制作晶体硅光伏组件,研究表明,存在于晶体硅光伏组件中的电路与其接地金属边框之间的高电压,会造成组件的光伏性能的持续衰减。造成此类衰减的机理是多方面的,例如在上述高电压的作用下,组件电池的封装材料和组件上表面层及下表面层的材料中出现的离子迁移现象;电池中出现的热载流子现象;电荷的再分配削减了电池的活性层;相关的电路被腐蚀等等。
上述引起衰减的机理被称之为电势诱发衰减、极性化、电解腐蚀和电化学腐蚀。常规抗PID(Potential Induced Degradation-电势诱导衰减),在组件使用3-5年后组件功率衰减明显,组件寿命期间,功率衰减过多,组件寿命变短,导致电站发电量明显下降。另外太阳能光伏组件的结构主要包括上盖板、粘结剂、电池片、背板、边框和接线盒。封装好的光伏组件需要露天放置,使用一段时间后空气中的灰尘 颗粒物会吸附在光伏组件的盖板上,形成阻光灰尘覆盖层,从而降低光伏组件的光电转化率,同时大块不透光污染物覆盖还会产生热斑效应,导致光伏组件局域高温直至烧毁报废。由此可见,太阳能光伏组件的自然抗性差,长期暴露在空气中会出现效率衰减、表面堆积成灰后难以清除等问题,因而现有的光伏组件的光电转化效率较低、使用寿命一般不能超过20年。
同时,现有常规晶体硅组件重量约为20kg左右。组件本身的重量,限制了其应用范围,在承重能力较弱的屋顶等项目中,不能满足实际需求。并且,常规晶体硅组件笨重,导致其不方便携带及运输。
因此,针对上述技术问题,有必要进一步的解决方案。
发明内容
为了解决上述技术问题,本发明提供了一种用于光伏组件封装的粘合剂,其组成的重量份数比为:乙烯醋酸乙烯酯30-45份,波长转换剂10-25份,丙烯酸异辛酯5-15份,醋酸乙烯酯5-20份,消泡剂5-10份,助剂5-10份;
其中,所述波长转换剂包括上波长转换剂和下波长转换剂,所述上波长转换剂将波长在红外波段及大于红外波段的光转化为可见光,所述下波长转换剂将波长在紫外波段及小于紫外波段的光转化为可见光;
所述上波长转换剂和下波长转换剂的重量比为1∶1。
进一步地,所述消泡剂为颗粒状,包括以下重量份原料:聚醚改 性有机硅类活性组分20-30份和载体70-80份,所述消泡剂颗粒的直径为0.1-0.5mm。
进一步地,所述聚醚改性有机硅活性组分的原料包括反应物、催化剂、白炭黑和乳化剂,所述反应物为低含氢硅油和聚醚。
进一步地,所述低含氢硅油和聚醚的质量比为10-20∶1;
所述催化剂占反应物的质量百分比为0.1-0.3%;
所述白炭黑占反应物的质量百分比为2-5%;
所述乳化剂占反应物的质量百分比为1-3%。
进一步地,所述低含氢硅油为二甲基硅油,所述聚醚为分子量为2000-3000的多元醇聚氧乙烯聚氧丙烯醚;
所述催化剂为三氟乙酸或铂;
所述乳化剂是由失水山梨醇脂肪酸酯、聚山梨酯和烷基酚聚氧乙烯醚进行复合得到的复合乳化剂;
所述载体为碳酸盐、硫酸盐、磷酸盐、淀粉、硅藻土、膨润土、凹凸棒土和滑石粉中的一种或多种。
进一步地,所述涂料还包括以下重量份原料:钠盐熬合剂2-8,石英粉2-8和硅烷偶联剂1-5。
进一步地,所述钠盐熬合剂为自乙二胺四乙酸二钠盐、乙二胺四乙酸四钠或羟乙基乙二胺三乙酸三钠。
进一步地,所述硅烷偶联剂为Y-氨丙基三乙氧基硅烷、Y-(甲基丙烯酰氧基)丙基三甲氧基硅烷、乙烯基三甲氧基硅烷或乙烯基三乙氧基硅烷。
本发明的用于光伏组件封装的粘合剂,具有如下有效效果:在封装时通过封装粘合剂中的波长转换剂将太阳能电池片无法转换波长的光转换为可以吸收的可见光,提高了太阳能电池片对光的利用率,另外,还可以通过转换上述波长的光,防止组件发热从而提高组件的使用寿命。
具体实施方式
下面将对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例一:
本发明实施例提供了一种用于光伏组件封装的粘合剂,包括以下重量份的原料:乙烯醋酸乙烯酯30份,波长转换剂25份,丙烯酸异辛酯5份,醋酸乙烯酯5份,消泡剂10份,助剂5份,钠盐熬合剂8,石英粉8和硅烷偶联剂4;
其中,所述波长转换剂包括上波长转换剂和下波长转换剂,所述上波长转换剂将波长在红外波段及大于红外波段的光转化为可见光,所述下波长转换剂将波长在紫外波段及小于紫外波段的光转化为可见光;
所述上波长转换剂和下波长转换剂的重量比为1∶1。
其中,所述钠盐熬合剂为自乙二胺四乙酸二钠盐;所述硅烷偶联剂为Y-氨丙基三乙氧基硅烷。
所述消泡剂为颗粒状,包括以下重量份原料:聚醚改性有机硅类活性组分20份和载体80份,所述消泡剂颗粒的直径为0.1-0.2mm;所述聚醚改性有机硅活性组分的原料包括反应物、催化剂、白炭黑和乳化剂,所述反应物为低含氢硅油和聚醚,所述低含氢硅油和聚醚的质量比为10∶1;
所述催化剂占反应物的质量百分比为0.3%;
所述白炭黑占反应物的质量百分比为5%;
所述乳化剂占反应物的质量百分比为3%。
所述低含氢硅油为二甲基硅油,所述聚醚为分子量为2000-2300的多元醇聚氧乙烯聚氧丙烯醚;
所述催化剂为三氟乙酸;
所述乳化剂是由失水山梨醇脂肪酸酯、聚山梨酯和烷基酚聚氧乙烯醚进行复合得到的复合乳化剂;
所述载体为碳酸盐。
实施例二:
本发明实施例提供了一种用于光伏组件封装的粘合剂,包括以下重量份的原料:乙烯醋酸乙烯酯45份,波长转换剂10份,丙烯酸异辛酯10份,醋酸乙烯酯10份,消泡剂10份,助剂7份,钠盐熬合剂5,石英粉2和硅烷偶联剂1;
其中,所述波长转换剂包括上波长转换剂和下波长转换剂,所述 上波长转换剂将波长在红外波段及大于红外波段的光转化为可见光,所述下波长转换剂将波长在紫外波段及小于紫外波段的光转化为可见光;
所述上波长转换剂和下波长转换剂的重量比为1∶1。
其中,所述钠盐熬合剂为乙二胺四乙酸四钠;所述硅烷偶联剂为Y-(甲基丙烯酰氧基)丙基三甲氧基硅烷。
所述消泡剂为颗粒状,包括以下重量份原料:聚醚改性有机硅类活性组分30份和载体70份,所述消泡剂颗粒的直径为0.2-0.4mm;所述聚醚改性有机硅活性组分的原料包括反应物、催化剂、白炭黑和乳化剂,所述反应物为低含氢硅油和聚醚,所述低含氢硅油和聚醚的质量比为20∶1;
所述催化剂占反应物的质量百分比为0.1%;
所述白炭黑占反应物的质量百分比为2%;
所述乳化剂占反应物的质量百分比为1%。
所述低含氢硅油为二甲基硅油,所述聚醚为分子量为2300-2600的多元醇聚氧乙烯聚氧丙烯醚;
所述催化剂为铂;
所述乳化剂是由失水山梨醇脂肪酸酯、聚山梨酯和烷基酚聚氧乙烯醚进行复合得到的复合乳化剂;
所述载体为磷酸盐。
实施例三:
本发明实施例提供了一种用于光伏组件封装的粘合剂,包括以下 重量份的原料:乙烯醋酸乙烯酯35份,波长转换剂15份,丙烯酸异辛酯15份,醋酸乙烯酯20份,消泡剂5份,助剂5份,钠盐熬合剂2,石英粉2和硅烷偶联剂1;
其中,所述波长转换剂包括上波长转换剂和下波长转换剂,所述上波长转换剂将波长在红外波段及大于红外波段的光转化为可见光,所述下波长转换剂将波长在紫外波段及小于紫外波段的光转化为可见光;
所述上波长转换剂和下波长转换剂的重量比为1∶1。
其中,所述高分子树脂为聚丙烯腈;所述钠盐熬合剂为羟乙基乙二胺三乙酸三钠;所述硅烷偶联剂为乙烯基三乙氧基硅烷。
所述消泡剂为颗粒状,包括以下重量份原料:聚醚改性有机硅类活性组分25份和载体75份,所述消泡剂颗粒的直径为0.4-0.5mm;所述聚醚改性有机硅活性组分的原料包括反应物、催化剂、白炭黑和乳化剂,所述反应物为低含氢硅油和聚醚,所述低含氢硅油和聚醚的质量比为15∶1;
所述催化剂占反应物的质量百分比为0.2%;
所述白炭黑占反应物的质量百分比为4%;
所述乳化剂占反应物的质量百分比为2%。
所述低含氢硅油为二甲基硅油,所述聚醚为分子量为2600-3000的多元醇聚氧乙烯聚氧丙烯醚;
所述催化剂为铂;
所述乳化剂是由失水山梨醇脂肪酸酯、聚山梨酯和烷基酚聚氧乙 烯醚进行复合得到的复合乳化剂;
所述载体为硅藻土、膨润土和凹凸棒土的混合。
本发明的用于光伏组件封装的粘合剂,具有如下有效效果:在封装时通过封装粘合剂中的波长转换剂将太阳能电池片无法转换波长的光转换为可以吸收的可见光,提高了太阳能电池片对光的利用率,另外,还可以通过转换上述波长的光,防止组件发热从而提高组件的使用寿命。
以上所述是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也视为本发明的保护范围。
Claims (8)
1.一种用于光伏组件封装的粘合剂,其特征在于,其组成的重量份数比为:乙烯醋酸乙烯酯30-45份,波长转换剂10-25份,丙烯酸异辛酯5-15份,醋酸乙烯酯5-20份,消泡剂5-10份,助剂5-10份;
其中,所述波长转换剂包括上波长转换剂和下波长转换剂,所述上波长转换剂将波长在红外波段及大于红外波段的光转化为可见光,所述下波长转换剂将波长在紫外波段及小于紫外波段的光转化为可见光;
所述上波长转换剂和下波长转换剂的重量比为1∶1。
2.根据权利要求1所述的用于光伏组件封装的粘合剂,其特征在于,所述消泡剂为颗粒状,包括以下重量份原料:聚醚改性有机硅类活性组分20-30份和载体70-80份,所述消泡剂颗粒的直径为0.1-0.5mm。
3.根据权利要求2所述的用于光伏组件封装的粘合剂,其特征在于,所述聚醚改性有机硅活性组分的原料包括反应物、催化剂、白炭黑和乳化剂,所述反应物为低含氢硅油和聚醚。
4.根据权利要求3所述的用于光伏组件封装的粘合剂,其特征在于,所述低含氢硅油和聚醚的质量比为10-20∶1;
所述催化剂占反应物的质量百分比为0.1-0.3%;
所述白炭黑占反应物的质量百分比为2-5%;
所述乳化剂占反应物的质量百分比为1-3%。
5.根据权利要求4所述的用于光伏组件封装的粘合剂,其特征在于,所述低含氢硅油为二甲基硅油,所述聚醚为分子量为2000-3000的多元醇聚氧乙烯聚氧丙烯醚;
所述催化剂为三氟乙酸或铂;
所述乳化剂是由失水山梨醇脂肪酸酯、聚山梨酯和烷基酚聚氧乙烯醚进行复合得到的复合乳化剂;
所述载体为碳酸盐、硫酸盐、磷酸盐、淀粉、硅藻土、膨润土、凹凸棒土和滑石粉中的一种或多种。
6.根据权利要求5所述的用于光伏组件封装的粘合剂,其特征在于,所述涂料还包括以下重量份原料:钠盐熬合剂2-8,石英粉2-8和硅烷偶联剂1-5。
7.根据权利要求6所述的用于光伏组件封装的粘合剂,其特征在于,所述钠盐熬合剂为自乙二胺四乙酸二钠盐、乙二胺四乙酸四钠或羟乙基乙二胺三乙酸三钠。
8.根据权利要求7所述的用于光伏组件封装的粘合剂,其特征在于,所述硅烷偶联剂为γ-氨丙基三乙氧基硅烷、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或乙烯基三乙氧基硅烷。
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