CN108336254A - 一种特种铜铝合金箔复合防潮隔热膜 - Google Patents
一种特种铜铝合金箔复合防潮隔热膜 Download PDFInfo
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Abstract
本发明公开了一种特种铜铝合金箔复合防潮隔热膜,其以铜铝合金箔为中间基础层,铜铝合金箔的上表面附着第二纳米Al2O3层;第二纳米Al2O3层的上表面附着聚丙烯与尼龙共聚膜;铜铝合金箔的下表面附着第一纳米Al2O3层;第一纳米Al2O3层的下表面附着有聚丙烯层;第一纳米Al2O3层和第二纳米Al2O3层分别由纳米Al2O3涂布在铜铝合金箔上,经过加热处理后,再在其外表面用纳米阻隔、绝缘涂布液进行涂布后形成。该特种铜铝合金箔复合防潮隔热膜有极佳的绝缘、耐冷冲、耐腐蚀、高阻隔、高强度性能。
Description
技术领域:
本发明涉及包装膜领域,具体讲是一种特种铜铝合金箔复合防潮隔热膜。
背景技术:
中国专利(专利号:ZL02163383.6)公开了一种锂电池软包装膜是以普通铝层为基础,其内层聚已内酰胺或聚已二酰已二胺层,外层为普通双向拉伸聚丙烯与尼龙共聚膜,以及其他类似的发明专利,它们目前存在的共同功能性的缺陷为:1.铝层经冷冲压成型时容易断裂,造成电解液泄漏。2.阻隔性能差,因聚丙烯与尼龙共聚膜与铜铝合金箔层之间力拉伸性能差异,导致冷冲压成型时聚丙烯与尼龙共聚膜与铝层容易分层,从而造成阻隔性能下降。3.铝层的绝缘及耐腐蚀处理不够,导致成型软包装膜绝缘性能差,易产生内层胀气,或被电极击穿。电池废品率高,使用寿命短。以上主要功能性缺陷存在,是目前锂软包装膜一直未能在市场广为应用的主要原因。
发明内容:
本发明所要解决的技术问题是,提供一种有极佳的绝缘、耐冷冲、耐腐蚀、高阻隔、高强度的特种铜铝合金箔复合防潮隔热膜。
本发明的技术解决方案是,提供一种特种铜铝合金箔复合防潮隔热膜,其以铜铝合金箔为中间基础层,铜铝合金箔的上表面附着第二纳米Al2O3层;第二纳米Al2O3层的上表面附着聚丙烯与尼龙共聚膜;铜铝合金箔的下表面附着第一纳米Al2O3层;第一纳米Al2O3层的下表面附着有聚丙烯层;第一纳米Al2O3层和第二纳米Al2O3层分别由纳米Al2O3涂布在铜铝合金箔上,经过加热处理后,再在其外表面用纳米阻隔、绝缘涂布液进行涂布后形成。
采用以上结构后与现有技术相比,本发明具有以下优点:聚丙烯与尼龙共聚膜中由于有聚丙烯的存在,其和铜铝合金箔粘合时不但具有极佳的复合牢度,剥离强度达20N/MM,而且使得冷冲压成型时,铜铝合金箔与聚丙烯与尼龙共聚膜之间具有良好的缓冲,不会产生脱膜;同时由于聚丙烯与尼龙共聚膜中,含有改性尼龙,因而其具有良好的强度和阻隔性能;再者,由于本发明中聚丙烯层为纳米Al2O3与聚丙烯的聚合体,聚丙烯层具有极佳的弹性和延伸性能而且还具有极佳的耐腐蚀性能,其和铜铝合金箔粘合后,既具有优良的冷冲性能,又具有极佳的热封性和耐腐蚀性能。
作为优选,聚丙烯与尼龙共聚膜和聚丙烯层分别通过耐酸碱树脂粘结在第二纳米Al2O3层和第一纳米Al2O3层上。
作为优选,铜铝合金箔与第一纳米Al2O3层之间还设有玻纤层,玻纤层为浸渍特氟龙的玻纤纱编制的网状玻纤布。
作为优选,铜铝合金箔与第二纳米Al2O3层之间还设有二氧化钛薄膜。
作为优选,聚丙烯层为纳米Al2O3与聚丙稀的聚合体,纳米Al2O3与聚丙稀的质量比为0.1:1-0.5:1。
进一步的,铜铝合金箔的厚度为度为30-60微米。
进一步的,聚丙烯与尼龙共聚膜的厚度为20-35微米。
进一步的,铜铝合金箔中加入了锰、镍,所述锰、镍的质量百分比分别为0.01%--0.05%。
进一步的,聚丙烯与尼龙共聚膜由改性尼龙与聚丙烯共挤而成,改性尼龙与聚丙烯的质量比为2:1-2:1.8。
附图说明:
图1为本发明的结构示意图。
具体实施方式:
下面结合附图和具体实施方式对本发明作进一步说明:
如图1所示,一种特种铜铝合金箔复合防潮隔热膜,其以铜铝合金箔1为中间基础层,铜铝合金箔1的上表面附着第二纳米Al2O3层3;第二纳米Al2O3层3的上表面附着聚丙烯与尼龙共聚膜4;铜铝合金箔1的下表面附着第一纳米Al2O3层2;第一纳米Al2O3层2的下表面附着有聚丙烯层5;第一纳米Al2O3层2和第二纳米Al2O3层3分别由纳米Al2O3涂布在铜铝合金箔1上,经过加热处理后,再在其外表面用纳米阻隔、绝缘涂布液进行涂布后形成。第一纳米Al2O3层2和第二纳米Al2O3层3使得制成的复合防潮隔热膜具有极佳的绝缘性和耐腐蚀性能,用来包装时第一纳米Al2O3层2和第二纳米Al2O3层3不会产生和铜铝合金箔1产生导电或胀气等现象。聚丙烯与尼龙共聚膜4、聚丙烯层5分别通过耐酸碱树脂粘结在第二纳米Al2O3层3和第一纳米Al2O3层2上。并且铜铝合金箔1中可以加入了锰、镍,锰、镍的质量百分比分别为0.01%--0.05%。另外聚丙烯与尼龙共聚膜4由改性尼龙与聚丙烯共挤而成,改性尼龙与聚丙烯的质量比为2:1-2:1.8。其中聚丙烯层5为纳米Al2O3与聚丙稀的聚合体,纳米Al2O3与聚丙稀的质量比为0.1:1-0.5:1,铜铝合金箔1的厚度为度为30-60微米。所述聚丙烯与尼龙共聚膜4的厚度为20-35微米,聚丙烯层5的厚度为20-65微米。
为提升性能,铜铝合金箔与第一纳米Al2O3层之间还设有玻纤层,玻纤层为浸渍特氟龙的玻纤纱编制的网状玻纤布,铜铝合金箔与第二纳米Al2O3层之间还设有二氧化钛薄膜,从而提升耐腐蚀、隔绝性能,提高强度。
本发明具有有极佳的绝缘、耐冷冲、耐腐蚀、高阻隔、高强度性能。
以上仅就本发明较佳的实施例作了说明,但不能理解为是对权利要求的限制。凡是利用本发明说明书及附图内容所做的等效结构或等效流程变换,均包括在本发明的专利保护范围之内。
Claims (9)
1.一种特种铜铝合金箔复合防潮隔热膜,其特征在于:其以铜铝合金箔为中间基础层,铜铝合金箔的上表面附着第二纳米Al2O3层;第二纳米Al2O3层的上表面附着聚丙烯与尼龙共聚膜;铜铝合金箔的下表面附着第一纳米Al2O3层;第一纳米Al2O3层的下表面附着有聚丙烯层;第一纳米Al2O3层和第二纳米Al2O3层分别由纳米Al2O3涂布在铜铝合金箔上,经过加热处理后,再在其外表面用纳米阻隔、绝缘涂布液进行涂布后形成。
2.根据权利要求1所述的特种铜铝合金箔复合防潮隔热膜,其特征在于:聚丙烯与尼龙共聚膜和聚丙烯层分别通过耐酸碱树脂粘结在第二纳米Al2O3层和第一纳米Al2O3层上。
3.根据权利要求1所述的特种铜铝合金箔复合防潮隔热膜,其特征在于:铜铝合金箔与第一纳米Al2O3层之间还设有玻纤层,玻纤层为浸渍特氟龙的玻纤纱编制的网状玻纤布。
4.根据权利要求1所述的特种铜铝合金箔复合防潮隔热膜,其特征在于:铜铝合金箔与第二纳米Al2O3层之间还设有二氧化钛薄膜。
5.根据权利要求2所述的特种铜铝合金箔复合防潮隔热膜,其特征在于:聚丙烯层为纳米Al2O3与聚丙稀的聚合体,纳米Al2O3与聚丙稀的质量比为0.1:1-0.5:1。
6.根据权利要求1所述的特种铜铝合金箔复合防潮隔热膜,其特征在于:铜铝合金箔的厚度为度为20-29微米。
7.根据权利要求1所述的特种铜铝合金箔复合防潮隔热膜,其特征在于:聚丙烯与尼龙共聚膜的厚度为12-18微米。
8.根据权利要求1所述的特种铜铝合金箔复合防潮隔热膜,其特征在于:铜铝合金箔中加入了锰、镍,所述锰、镍的质量百分比分别为0.06%--0.08%。
9.根据权利要求1所述的特种铜铝合金箔复合防潮隔热膜,其特征在于:聚丙烯与尼龙共聚膜由改性尼龙与聚丙烯共挤而成,改性尼龙与聚丙烯的质量比为2:1-2:1.8。
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CN114497833A (zh) * | 2020-11-11 | 2022-05-13 | 华为技术有限公司 | 一种电池包装膜,电池包装膜的制备方法及电子设备 |
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