CN106497504A - 一种耐候性光伏胶及其制备方法 - Google Patents
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Abstract
本发明一种耐候性光伏胶及其制备方法,由以下重量份的原料组分制成:端羟基聚二甲基硅氧烷100份、补强填料100‑150份、增塑剂5‑10份、交联剂4‑6份、偶联剂0.5‑1.5份、催化剂0.05‑0.5份、稳定剂0.1‑1份;所述偶联剂由铝酸酯、钛酸酯和稀土偶联剂组成。本发明制备的光伏胶不仅粘接强度、贮存稳定性、阻燃、力学及密封性能良好,还能赋予光伏胶优良的耐候性能和触变性能,能够满足太阳能光伏发电的应用需求;还具有原料组分简单、成本低廉、制备工艺简单、生产效率高等优点,容易实现工业化生产推广应用。
Description
技术领域
本发明涉及密封胶技术领域,具体是一种耐候性光伏胶及其制备方法。
背景技术
太阳能光伏发电是指利用光生伏打效应使太阳光辐射转变成电能。随着人类经济和社会的可持续发展对能源与环保的要求越来越高,这一发电方式越来越受到人们的重视。而太阳能光伏发电的核心部件是太阳能电池片,由于太阳能电池片自身存在着薄、脆、易氧化等缺陷,暴露在空气、雨水等自然环境下很容易造成永久性破坏。因此要实现太阳能发电的工业化应用,就要求对其进行保护性密封从而形成太阳能光伏组件。光伏胶是用于光伏组件连结和密封,除了要具备中性硅酮胶良好的粘接强度和密封性能外,还要求其具有良好的耐紫外线曝晒,耐黄变性能、耐燃耐湿热及抗冲击性能等,以满足使用环境要求。而目前市售的光伏胶在性能上仍难以满足使用要求。近年来关于光伏组件用单组分硅酮密封胶制备方法的文献和专利较少,查到的相关文件如下。
中国发明专利CN 102746486 A公开了一种太阳能电池组件用单组分粘接密封型硅酮胶的制备方法。该方法是通过使用一种长链脂肪链部分硅烷化聚氨酯,再配合端羟基聚二甲基硅氧烷、交联剂、偶联剂等制备硅酮胶。此方法制得的单组分硅酮胶具有优良的贮存稳定和防开裂性能,但其耐候性较差。
中国发明专利CN 104710961 A公开了一种太阳能电池组件用单组分密封硅酮胶的制备方法。该方法使用了甲基硅橡胶、端羟基聚二甲基硅氧烷、甲基硅油、光稳定剂、交联剂、偶联剂等制备单组分密封硅酮胶,其表干时间短,可防水汽进入,虽然具有良好的密封粘接性和较长的使用寿命等优点,但抗紫外、耐黄变性能较差。
因此,为了满足太阳能光伏发电的需求,研究一种具有良好的粘接强度、密封性能、耐候性能、抗冲击性能的光伏胶显得十分重要。
发明内容
本发明针对现有光伏胶存在的问题,提供一种耐候性光伏胶及其制备方法。本发明的光伏胶具有优异的耐候性性能、粘接强度、密封性能。
为了实现以上目的,本发明采用的技术方案如下:
一种耐候性光伏胶,由以下重量份的原料组分制成:端羟基聚二甲基硅氧烷100份、补强填料100-150份、增塑剂5-10份、交联剂4-6份、偶联剂0.5-1.5份、催化剂0.05-0.5份、稳定剂0.1-1份;所述偶联剂由铝酸酯、钛酸酯和稀土偶联剂组成。
优选的,以上所述补强填料由质量比为5-9:1纳米碳酸钙和钛白粉组成。
优选的,以上所述纳米碳酸钙粒径为50-80nm,比表面积为23-30m2/g;钛白粉粒径为250-350nm。
优选的,以上所述端羟基聚二甲基硅氧烷在25℃下黏度为20000-50000 Pa·s。
优选的,以上所述偶联剂中铝酸酯、钛酸酯和稀土偶联剂的质量比为3-4:2-3:1。
优选的,以上所述铝酸酯偶联剂的种类为SG-Al821、DL-411、ASA中的一种或多种。以上产品均可从市场上购买。
优选的,以上所述钛酸酯偶联剂为TMC-201、TMC-102、TMC-TTS中的一种或多种。以上产品均可从市场上购买。
优选的,以上所述增塑剂为二甲基硅油,其黏度为500Pa·s。
优选的,以上所述交联剂为甲基三甲氧基硅烷、乙烯基三甲氧基硅烷和甲基三乙氧基硅烷中的一种或多种组合物。
优选的,以上所述催化剂为二月桂酸二丁基锡、二月桂酸二辛基锡、二丁基醋酸锡和柠檬酸酯中的一种或多种组合物。
优选的,以上所述稳定剂为六甲基环三硅氮烷和/或六甲基二硅氮烷。
以上所述耐候性光伏胶的制备方法,包括以下步骤:
(1)在室温下,将羟基封端聚二甲基硅氧烷、补强材料、增塑剂加入强力分散搅拌机,在温度为120-135℃、真空度为 0.085-0.095Mpa、转速为500-800rpm下搅拌脱水3-5h,得到混合料;
(2)将步骤(1)的混合料冷却至35-45℃,依次加入交联剂、偶联剂、稳定剂及催化剂,混合均匀,在真空为0.085-0.095Mpa、转速为500-800rpm的条件下搅拌1-2h;将所得的胶料移至压机,包装,即得耐候性光伏胶。
与现有技术相比,本发明的优点及有益效果为:
1、本发明制备的光伏胶不仅粘接强度、贮存稳定性、阻燃、力学及密封性能良好,还能赋予光伏胶优良的耐候性能和触变性能,能够满足太阳能光伏发电的应用需求。
2、本光伏胶配方中采用的偶联剂由铝酸酯、钛酸酯和稀土偶联剂组成,不仅具备铝酸酯、钛酸酯和稀土偶联剂各组分的优异偶联效果,还能发挥铝酸酯、钛酸酯和稀土偶联剂的协同作用,具有更好的耐候性能,能更好地适应户外的恶劣环境,同时能改善体系的力学性能。
3、本发明提供的光伏胶还具有原料组分简单、成本低廉、制备工艺简单、生产效率高等优点,容易实现工业化生产推广应用。
具体实施方式
下面将结合具体实施例对本发明进一步说明,但不限于本发明的保护范围。
实施例1
一种耐候性光伏胶,由以下重量份的原料组分制成:粘度为20000 Pa·s的端羟基聚二甲基硅氧烷1000g、活性纳米碳酸钙1000g、钛白粉200g、粘度为500Pa·s的二甲基硅油增塑剂65g、甲基三甲氧基硅烷交联剂55g、SG-Al821型铝酸酯偶联剂7g、TMC-201型钛酸酯偶联剂6g、稀土偶联剂2g、二月桂酸二丁基锡催化剂1.5g和六甲基环三硅氮烷稳定剂3.5g。
其制备方法为:
(1)在室温下,将羟基封端聚二甲基硅氧烷、活性纳米碳酸钙、钛白粉、二甲基硅油增塑剂加入强力分散搅拌机,在温度为120℃、真空度为0.095Mpa、转速为500rpm下搅拌脱水4h,得到混合料;
(2)将步骤(1)的混合料冷却至35℃,依次加入甲基三甲氧基硅烷交联剂、铝酸酯偶联剂偶联剂、钛酸酯偶联剂、稀土偶联剂、六甲基环三硅氮烷稳定剂及二月桂酸二丁基锡催化剂,混合均匀,在真空为0.095Mpa、转速为500rpm的条件下搅拌1h;将所得的胶料移至压机,包装,即得耐候性光伏胶。
实施例2
一种耐候性光伏胶,由以下重量份的原料组分制成:粘度为20000 Pa·s的端羟基聚二甲基硅氧烷1000g、活性纳米碳酸钙900g、钛白粉150g、粘度为500Pa·s的二甲基硅油增塑剂50g、乙基三甲氧基硅烷交联剂40g、DL-411型铝酸酯偶联剂4g、TMC-102型钛酸酯偶联剂3g、稀土偶联剂1g、二丁醋酸锡催化剂3g和六甲基环三硅氮烷稳定剂8g。
其制备方法为:
(1)在室温下,将羟基封端聚二甲基硅氧烷、活性纳米碳酸钙、钛白粉、二甲基硅油增塑剂加入强力分散搅拌机,在温度为130℃、真空度为0.090Mpa、转速为800rpm下搅拌脱水3h,得到混合料;
(2)将步骤(1)的混合料冷却至40℃,依次加入乙基三甲氧基硅烷交联剂、铝酸酯偶联剂偶联剂、钛酸酯偶联剂、稀土偶联剂、六甲基环三硅氮烷稳定剂及二丁醋酸锡催化剂,混合均匀,在真空为0.090Mpa、转速为800rpm的条件下搅拌1h;将所得的胶料移至压机,包装,即得耐候性光伏胶。
实施例3
一种耐候性光伏胶,由以下重量份的原料组分制成:粘度为20000 Pa·s的端羟基聚二甲基硅氧烷650g、粘度为50000 Pa·s的端羟基聚二甲基硅氧烷350g、活性纳米碳酸钙1300g、钛白粉200g、粘度为500Pa·s的二甲基硅油增塑剂60g、甲基三乙氧基硅烷交联剂52g、SG-Al821型铝酸酯偶联剂6g、TMC-TTS型钛酸酯偶联剂4g、稀土偶联剂1.5g、二月桂酸二丁基锡0.5g和六甲基二硅氮烷稳定剂10g。
其制备方法为:
(1)在室温下,将羟基封端聚二甲基硅氧烷、活性纳米碳酸钙、钛白粉、二甲基硅油增塑剂加入强力分散搅拌机,在温度为120℃、真空度为0.085Mpa、转速为500rpm下搅拌脱水5h,得到混合料;
(2)将步骤(1)的混合料冷却至45℃,依次加入甲基三乙氧基硅烷交联剂、铝酸酯偶联剂偶联剂、钛酸酯偶联剂、稀土偶联剂、六甲基二硅氮烷稳定剂及二丁醋酸锡催化剂,混合均匀,在真空为0.085Mpa、转速为500rpm的条件下搅拌2h;将所得的胶料移至压机,包装,即得耐候性光伏胶。
实施例4
一种耐候性光伏胶,由以下重量份的原料组分制成:粘度为50000 Pa·s的端羟基聚二甲基硅氧烷1000g、活性纳米碳酸钙900g、钛白粉100g、粘度为500Pa·s的二甲基硅油增塑剂80g、甲基三甲氧基硅烷交联剂35g、甲基三乙氧基硅烷交联剂15g、SG-Al821型铝酸酯偶联剂5g、ASA型铝酸酯偶联剂2g、TMC-201型钛酸酯偶联剂6g、稀土偶联剂2g、二月桂酸二辛基锡催化剂3g、柠檬酸钠催化剂2g、六甲基环三硅氮烷稳定剂5g和六甲基二硅氮烷稳定剂3g。
其制备方法为:
(1)在室温下,将羟基封端聚二甲基硅氧烷、活性纳米碳酸钙、钛白粉、二甲基硅油增塑剂加入强力分散搅拌机,在温度为125℃、真空度为0.095Mpa、转速为800rpm下搅拌脱水3h,得到混合料;
(2)将步骤(1)的混合料冷却至45℃,依次加入甲基三甲氧基硅烷及甲基三乙氧基硅烷交联剂、铝酸酯偶联剂偶联剂、钛酸酯偶联剂、稀土偶联剂、六甲基环三硅氮烷及六甲基二硅氮烷稳定剂、二月桂酸二辛基锡及柠檬酸钠催化剂,混合均匀,在真空为0.095Mpa、转速为800rpm的条件下搅拌1.5h;将所得的胶料移至压机,包装,即得耐候性光伏胶。
实施例5
一种耐候性光伏胶,由以下重量份的原料组分制成:粘度为50000 Pa·s的端羟基聚二甲基硅氧烷1000g、活性纳米碳酸钙1050g、钛白粉150g、粘度为500Pa·s的二甲基硅油增塑剂100g、甲基三甲氧基硅烷交联剂60g、SG-Al821型铝酸酯偶联剂2.4g、TMC-201型钛酸酯偶联剂1g、TMC-TTS型钛酸酯偶联剂0.8g、稀土偶联剂0.8g、二月桂酸二辛基锡催化剂5g、六甲基环三硅氮烷稳定剂5g。
其制备方法为:
(1)在室温下,将羟基封端聚二甲基硅氧烷、活性纳米碳酸钙、钛白粉、二甲基硅油增塑剂加入强力分散搅拌机,在温度为135℃、真空度为0.090Mpa、转速为800rpm下搅拌脱水4h,得到混合料;
(2)将步骤(1)的混合料冷却至40℃,依次加入甲基三甲氧基硅烷交联剂、铝酸酯偶联剂偶联剂、钛酸酯偶联剂、稀土偶联剂、六甲基环三硅氮烷稳定剂、二月桂酸二辛基锡催化剂,混合均匀,在真空为0.090Mpa、转速为800rpm的条件下搅拌1.5h;将所得的胶料移至压机,包装,即得耐候性光伏胶。
将以上实施例制得光伏胶的性能进行测试,测试结果如表1所示。具体测试方法为:
将实施1-5制得的光伏胶在试验条件为:T=23±2℃,ψ=50±5%的条件下养护24h,将光伏胶从软管中挤出,按照GB/T 13477.5-2003测试其表干时间;按照GB/T 13477.6-2003测试其下垂度;按照GB/T 2408测试其阻燃等级;按照GB/T 16776测试其硬度。按照GB/T 528-2009的要求制备2组哑铃试件,并在试验条件下养护7d,其中第1组按本标准测试其力学性能;第2组按GB/T9535-1998测试其耐湿热性能,按照GB/T 7124 的要求制备2组剪切试件,并在试验条件下养护14d,其中第1组按本标准测试其力学性能;第2组按GB/T9535-1998测试其耐湿热性能。
Claims (10)
1.一种耐候性光伏胶,其特征在于:由以下重量份的原料组分制成:端羟基聚二甲基硅氧烷100份、补强填料100-150份、增塑剂5-10份、交联剂4-6份、偶联剂0.5-1.5份、催化剂0.05-0.5份、稳定剂0.1-1份;所述偶联剂由铝酸酯、钛酸酯和稀土偶联剂组成。
2.根据权利要求1所述耐候性光伏胶,其特征在于:所述补强填料由质量比为5-9:1的纳米碳酸钙和钛白粉组成。
3.根据权利要求2所述耐候性光伏胶,其特征在于:所述纳米碳酸钙粒径为50-80nm,比表面积为23-30m2/g;钛白粉粒径为250-350nm。
4.根据权利要求1所述耐候性光伏胶,其特征在于:所述端羟基聚二甲基硅氧烷在25℃下黏度为20000-50000 Pa·s。
5.根据权利要求1所述耐候性光伏胶,其特征在于:所述偶联剂中铝酸酯、钛酸酯和稀土偶联剂的质量比为3-4:2-3:1。
6.根据权利要求1所述耐候性光伏胶,其特征在于:所述增塑剂为二甲基硅油,其黏度为500Pa·s。
7.根据权利要求1所述耐候性光伏胶,其特征在于:所述交联剂为甲基三甲氧基硅烷、乙烯基三甲氧基硅烷和甲基三乙氧基硅烷中的一种或多种组合物物。
8.根据权利要求1所述耐候性光伏胶,其特征在于:所述催化剂为二月桂酸二丁基锡、二月桂酸二辛基锡、二丁基醋酸锡和柠檬酸酯中的一种或多种组合物物。
9.根据权利要求1所述耐候性光伏胶,其特征在于:所述稳定剂为六甲基环三硅氮烷和/或六甲基二硅氮烷。
10.一种如权利要求1所述耐候性光伏胶的制备方法,其特征在于:包括以下步骤:
(1)在室温下,将羟基封端聚二甲基硅氧烷、补强材料、增塑剂加入强力分散搅拌机,在温度为120-135℃、真空度为 0.085-0.095Mpa、转速为500-800rpm下搅拌脱水3-5h,得到混合料;
(2)将步骤(1)的混合料冷却至35-45℃,搅拌,依次加入交联剂、偶联剂、稳定剂及催化剂,混合均匀,在真空为0.085-0.095Mpa、转速为500-800rpm的条件下搅拌1-2h;然后将所得的胶料移至压机,包装,即得耐候性光伏胶。
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