CN107474450A - 一种新型高阻隔耐腐蚀锂电池复合软包装膜及其制备方法 - Google Patents
一种新型高阻隔耐腐蚀锂电池复合软包装膜及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种新型高阻隔耐腐蚀锂电池复合软包装膜,其配方包括以下重量份数的各组分:纳米碳酸钙 45~60 份、碳纳米管20~35份、油酸酰胺25~30 份、马来酸酐20~30份、石墨烯10~18份、乙烯基有机硅树脂 6~10 份、海泡石 5~8 份、聚四氟乙烯 25~30 份、苯骈三氮唑20~30份、聚乙烯醇缩丁醛 12~16 份、十二碳醇酯8~12份、线型酚醛树脂 8~10 份以及若干助剂;本发明的新型高阻隔耐腐蚀锂电池复合软包装膜,材料质轻柔韧,起到高强度,高耐磨,耐高温、耐腐蚀、抗老化、防翘曲的作用,从而提高锂电池的密封性能,并且有效延长锂电池的使用寿命,并且扩大了锂电池的使用范围。
Description
技术领域
本发明涉及一种新型高阻隔耐腐蚀锂电池复合软包装膜及其制备方法。
背景技术
常用的锂电池包装材料主要有金属、铝塑膜。相对于金属包装,铝塑膜提供了一种
轻便、低成本的包装方式,但也对材料提出了更高的要求。目前常见的铝塑膜一般使用尼龙( PA )做为表层,但是尼龙( PA )遇到锂电池使用的电解液容易被腐蚀也没有阻挡作用,因此一旦铝塑膜表面接触到电解液,就会形成白斑,不仅影响锂电池的外观,严重的也可能会渗透腐蚀阻隔层的铝箔,影响铝塑膜的阻隔性能,导致内容物渗漏甚至爆炸。
近年来,利用纳米物质进行材料改性加工的研究越来越多,但应用于锂电池材料方面的报道很少,因此我们可以利用纳米物质对锂电池材料进行改性,以期获得密封性、抗老化性、抗腐蚀性、防翘曲等性能优异的锂电池复合材料。
发明内容
本发明要解决的技术问题是克服现有锂电池材料的强度低,耐磨性、防腐性和抗氧化效果差的缺陷,提供一种新型高阻隔耐腐蚀锂电池复合软包装膜及其制备方法。
为了解决上述技术问题,本发明提供了如下的技术方案:
一种新型高阻隔耐腐蚀锂电池复合软包装膜,其配方包括以下重量份数的各组分:
纳米碳酸钙 45~60 份、碳纳米管20~35份、油酸酰胺25~30 份、马来酸酐20~30份、石墨烯10~18份、乙烯基有机硅树脂 6~10 份、过氯乙烯5~8份、氧化铝4~8份、白炭黑3~5 份、丙三醇脂共聚物3~5 份、海泡石 5~8 份、石墨粉 2~3 份、聚四氟乙烯 25~30份、苯骈三氮唑20~30份、聚乙烯醇缩丁醛 12~16 份、十二碳醇酯8~12份、线型酚醛树脂8~10 份、亚磷酸酯 3~5 份、纳米钛白粉3~6 份、邻羟基苯甲酸苯酯 3~6份、硬脂酸 2~3 份、甲基异噻唑啉酮3~5份、聚酯 1~2 份、热塑性聚氨酯弹性体 1~2 份、松香0.5~1份。
进一步的,一种新型高阻隔耐腐蚀锂电池复合软包装膜,其配方包括以下重量份数的各组分:
纳米碳酸钙 50~55 份、碳纳米管25~30份、油酸酰胺28 份、马来酸酐24~26份、石墨烯12~16份、乙烯基有机硅树脂8份、过氯乙烯6份、氧化铝6份、白炭黑4份、丙三醇脂共聚物4 份、海泡石 6份、石墨粉 2~3 份、聚四氟乙烯 28份、苯骈三氮唑24~26份、聚乙烯醇缩丁醛 14 份、十二碳醇酯10份、线型酚醛树脂 8份、亚磷酸酯 4 份、纳米钛白粉5份、邻羟基苯甲酸苯酯 4~6份、硬脂酸 2~3 份、甲基异噻唑啉酮4份、聚酯 1~2 份、热塑性聚氨酯弹性体 1~2 份、松香0.5~1份。
优选的,所述纳米碳酸钙的粒径为 30~50纳米。
优选的,所述碳纳米管的粒径为80~100 纳米。
一种新型高阻隔耐腐蚀锂电池复合软包装膜的制备方法,包括以下几个步骤:
(1)向高速混合机中加入乙烯基有机硅树脂、过氯乙烯和氧化铝、石墨粉和十二碳醇酯升温至 65~80℃后用超声波发生器中充分混合10~15min,再加入纳米碳酸钙、碳纳米管、油酸酰胺、马来酸酐、石墨烯、丙三醇脂共聚物、海泡石继续用超声波发生器中充分混合10-15min 得混合物 I ;优选的,超声波发生器的功率为1.2KW~1.5KW,时间 5~15 分钟,工作方式为间歇式工作,每工作 30秒,暂停 30 秒;
(2) 将混合物 I加入到砂磨机中,砂磨20~60min后得混合物 II ;优选的,砂磨至细度小于 10um;
(3) 先将聚四氟乙烯、苯骈三氮唑、聚乙烯醇缩丁醛、线型酚醛树脂、亚磷酸酯、硬脂酸、聚酯、白炭黑加入到高速混合机中,混合10-15min后再加入混合物 II,然后升温至 75-80℃,保温 15-20min后开始自然冷却降温,当温度降至 35-40℃后再加入纳米钛白粉、邻羟基苯甲酸苯酯、甲基异噻唑啉酮、热塑性聚氨酯弹性体和松香继续混合 20-25min,即得混合物 III ;
(4) 将混合物 III 经挤出机在 90-100℃下挤压成片,冷却破碎后加入到粉碎机中,粉碎后的粉末颗粒经 180 目筛过筛,送入制膜机制膜,即得成品。
本发明的新型高阻隔耐腐蚀锂电池复合软包装膜,选用纳米碳酸钙、碳纳米管、油酸酰胺、马来酸酐作为主要材料同时加入各种助剂对聚四氟乙烯和苯骈三氮唑进行改性,得到的复合材料能够减少锂电池的破损,其经久耐用,制备的材料质轻柔韧,起到高强度,高耐磨,耐高温、耐腐蚀、抗老化、防翘曲的作用,从而提高锂电池的密封性能,并且有效延长锂电池的使用寿命,并且扩大了锂电池的使用范围。
具体实施方式
以下对本发明的优选实施例进行说明,应当理解,此处所描述的优选实施例仅用于说明和解释本发明,并不用于限定本发明。
实施例1
一种新型高阻隔耐腐蚀锂电池复合软包装膜,其配方包括以下重量份数的各组分:
纳米碳酸钙 45份、碳纳米管35份、油酸酰胺25 份、马来酸酐30份、石墨烯10份、乙烯基有机硅树脂 10 份、过氯乙烯5份、氧化铝8份、白炭黑3 份、丙三醇脂共聚物5 份、海泡石 5份、石墨粉 3 份、聚四氟乙烯 25份、苯骈三氮唑30份、聚乙烯醇缩丁醛 12份、十二碳醇酯12份、线型酚醛树脂 8份、亚磷酸酯 5 份、纳米钛白粉3 份、邻羟基苯甲酸苯酯 6份、硬脂酸 2 份、甲基异噻唑啉酮5份、聚酯 1份、热塑性聚氨酯弹性体2 份、松香0.5份。
一种新型高阻隔耐腐蚀锂电池复合软包装膜的制备方法,包括以下几个步骤:
(1)向高速混合机中加入乙烯基有机硅树脂、过氯乙烯和氧化铝、石墨粉和十二碳醇酯升温至 65~80℃后用超声波发生器中充分混合10~15min,再加入纳米碳酸钙、碳纳米管、油酸酰胺、马来酸酐、石墨烯、丙三醇脂共聚物、海泡石继续用超声波发生器中充分混合10-15min 得混合物 I ;
(2) 将混合物 I加入到砂磨机中,砂磨20~60min后得混合物 II ;
(3) 先将聚四氟乙烯、苯骈三氮唑、聚乙烯醇缩丁醛、线型酚醛树脂、亚磷酸酯、硬脂酸、聚酯、白炭黑加入到高速混合机中,混合10-15min后再加入混合物 II,然后升温至 75-80℃,保温 15-20min后开始自然冷却降温,当温度降至 35-40℃后再加入纳米钛白粉、邻羟基苯甲酸苯酯、甲基异噻唑啉酮、热塑性聚氨酯弹性体和松香继续混合 20-25min,即得混合物 III ;
(4) 将混合物 III 经挤出机在 90-100℃下挤压成片,冷却破碎后加入到粉碎机中,粉碎后的粉末颗粒经 180 目筛过筛,送入制膜机制膜,即得成品。
实施例2
一种新型高阻隔耐腐蚀锂电池复合软包装膜,其配方包括以下重量份数的各组分:
纳米碳酸钙 60 份、碳纳米管20份、油酸酰胺30 份、马来酸酐20份、石墨烯18份、乙烯基有机硅树脂 6 份、过氯乙烯8份、氧化铝4份、白炭黑5 份、丙三醇脂共聚物3 份、海泡石8 份、石墨粉 2 份、聚四氟乙烯 30 份、苯骈三氮唑20份、聚乙烯醇缩丁醛16 份、十二碳醇酯8份、线型酚醛树脂 10 份、亚磷酸酯 3 份、纳米钛白粉6 份、邻羟基苯甲酸苯酯 3份、硬脂酸 3 份、甲基异噻唑啉酮3份、聚酯 2 份、热塑性聚氨酯弹性体 1 份、松香1份。
一种新型高阻隔耐腐蚀锂电池复合软包装膜的制备方法,包括以下几个步骤:
(1)向高速混合机中加入乙烯基有机硅树脂、过氯乙烯和氧化铝、石墨粉和十二碳醇酯升温至 65~80℃后用超声波发生器中充分混合10~15min,再加入纳米碳酸钙、碳纳米管、油酸酰胺、马来酸酐、石墨烯、丙三醇脂共聚物、海泡石继续用超声波发生器中充分混合10-15min 得混合物 I ;超声波发生器的功率为 1.2KW~1.5KW,时间 5~15 分钟,工作方式为间歇式工作,每工作 30秒,暂停 30 秒;
(2) 将混合物 I加入到砂磨机中,砂磨20~60min后得混合物 II ;砂磨至细度小于10um;
(3) 先将聚四氟乙烯、苯骈三氮唑、聚乙烯醇缩丁醛、线型酚醛树脂、亚磷酸酯、硬脂酸、聚酯、白炭黑加入到高速混合机中,混合10-15min后再加入混合物 II,然后升温至 75-80℃,保温 15-20min后开始自然冷却降温,当温度降至 35-40℃后再加入纳米钛白粉、邻羟基苯甲酸苯酯、甲基异噻唑啉酮、热塑性聚氨酯弹性体和松香继续混合 20-25min,即得混合物 III ;
(4) 将混合物 III 经挤出机在 90-100℃下挤压成片,冷却破碎后加入到粉碎机中,粉碎后的粉末颗粒经 180 目筛过筛,送入制膜机制膜,即得成品。
实施例3
一种新型高阻隔耐腐蚀锂电池复合软包装膜,其配方包括以下重量份数的各组分:
纳米碳酸钙 55 份、碳纳米管30份、油酸酰胺28 份、马来酸酐26份、石墨烯16份、乙烯基有机硅树脂8份、过氯乙烯6份、氧化铝6份、白炭黑4份、丙三醇脂共聚物4 份、海泡石 6份、石墨粉 3 份、聚四氟乙烯 28份、苯骈三氮唑26份、聚乙烯醇缩丁醛 14 份、十二碳醇酯10份、线型酚醛树脂 8份、亚磷酸酯 4 份、纳米钛白粉5份、邻羟基苯甲酸苯酯6份、硬脂酸3份、甲基异噻唑啉酮4份、聚酯 2 份、热塑性聚氨酯弹性体2 份、松香1份。
纳米碳酸钙的粒径为 30~50纳米、碳纳米管的粒径为80~100 纳米。
本实施例的新型高阻隔耐腐蚀锂电池复合软包装膜的制备方法同实施例2。
实施例4
一种新型高阻隔耐腐蚀锂电池复合软包装膜,其配方包括以下重量份数的各组分:
纳米碳酸钙 50 份、碳纳米管25份、油酸酰胺28 份、马来酸酐24份、石墨烯12份、乙烯基有机硅树脂8份、过氯乙烯6份、氧化铝6份、白炭黑4份、丙三醇脂共聚物4 份、海泡石 6份、石墨粉 2 份、聚四氟乙烯 28份、苯骈三氮唑24份、聚乙烯醇缩丁醛 14 份、十二碳醇酯10份、线型酚醛树脂 8份、亚磷酸酯 4 份、纳米钛白粉5份、邻羟基苯甲酸苯酯 4份、硬脂酸2 份、甲基异噻唑啉酮4份、聚酯 1 份、热塑性聚氨酯弹性体 1份、松香0.5份。
纳米碳酸钙的粒径为 30~50纳米、碳纳米管的粒径为80~100 纳米。
本实施例的新型高阻隔耐腐蚀锂电池复合软包装膜的制备方法同实施例2。
最后应说明的是:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (7)
1.一种新型高阻隔耐腐蚀锂电池复合软包装膜,其特征在于,其配方包括以下重量份数的各组分:
纳米碳酸钙 45~60 份、碳纳米管20~35份、油酸酰胺25~30 份、马来酸酐20~30份、石墨烯10~18份、乙烯基有机硅树脂 6~10 份、过氯乙烯5~8份、氧化铝4~8份、白炭黑3~5 份、丙三醇脂共聚物3~5 份、海泡石 5~8 份、石墨粉 2~3 份、聚四氟乙烯 25~30份、苯骈三氮唑20~30份、聚乙烯醇缩丁醛 12~16 份、十二碳醇酯8~12份、线型酚醛树脂8~10 份、亚磷酸酯 3~5 份、纳米钛白粉3~6 份、邻羟基苯甲酸苯酯 3~6份、硬脂酸 2~3 份、甲基异噻唑啉酮3~5份、聚酯 1~2 份、热塑性聚氨酯弹性体 1~2 份、松香0.5~1份。
2.如权利要求1所述的一种新型高阻隔耐腐蚀锂电池复合软包装膜,其特征在于,其配方包括以下重量份数的各组分:
纳米碳酸钙 50~55 份、碳纳米管25~30份、油酸酰胺28 份、马来酸酐24~26份、石墨烯12~16份、乙烯基有机硅树脂8份、过氯乙烯6份、氧化铝6份、白炭黑4份、丙三醇脂共聚物4 份、海泡石 6份、石墨粉 2~3 份、聚四氟乙烯 28份、苯骈三氮唑24~26份、聚乙烯醇缩丁醛 14 份、十二碳醇酯10份、线型酚醛树脂 8份、亚磷酸酯 4 份、纳米钛白粉5份、邻羟基苯甲酸苯酯 4~6份、硬脂酸 2~3 份、甲基异噻唑啉酮4份、聚酯 1~2 份、热塑性聚氨酯弹性体 1~2 份、松香0.5~1份。
3.如权利要求1或2任一项所述的一种新型高阻隔耐腐蚀锂电池复合软包装膜,其特征在于,所述纳米碳酸钙的粒径为 30~50纳米。
4.如权利要求1或2任一项所述的一种新型高阻隔耐腐蚀锂电池复合软包装膜,其特征在于,所述碳纳米管的粒径为80~100 纳米。
5.一种如权利要求1或2任一项所述的新型高阻隔耐腐蚀锂电池复合软包装膜的制备方法,其特征在于,包括以下几个步骤:
(1)向高速混合机中加入乙烯基有机硅树脂、过氯乙烯和氧化铝、石墨粉和十二碳醇酯升温至 65~80℃后用超声波发生器中充分混合10~15min,再加入纳米碳酸钙、碳纳米管、油酸酰胺、马来酸酐、石墨烯、丙三醇脂共聚物、海泡石继续用超声波发生器中充分混合10-15min 得混合物 I ;
(2) 将混合物 I加入到砂磨机中,砂磨20~60min后得混合物 II ;
(3) 先将聚四氟乙烯、苯骈三氮唑、聚乙烯醇缩丁醛、线型酚醛树脂、亚磷酸酯、硬脂酸、聚酯、白炭黑加入到高速混合机中,混合10-15min后再加入混合物 II,然后升温至 75-80℃,保温 15-20min后开始自然冷却降温,当温度降至 35-40℃后再加入纳米钛白粉、邻羟基苯甲酸苯酯、甲基异噻唑啉酮、热塑性聚氨酯弹性体和松香继续混合 20-25min,即得混合物 III ;
(4) 将混合物 III 经挤出机在 90-100℃下挤压成片,冷却破碎后加入到粉碎机中,粉碎后的粉末颗粒经 180 目筛过筛,送入制膜机制膜,即得成品。
6.如权利要求5所述的一种如权利要求1所述的新型高阻隔耐腐蚀锂电池复合软包装膜的制备方法,其特征在于,在步骤1)中超声波发生器的功率为 1.2KW~1.5KW,时间 5~15 分钟,工作方式为间歇式工作,每工作 30秒,暂停 30 秒。
7.如权利要求5所述的一种如权利要求1所述的新型高阻隔耐腐蚀锂电池复合软包装膜的制备方法,其特征在于,在步骤2)中砂磨至细度小于 10um。
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