CN116836642A - 一种绝缘胶膜及其制备方法 - Google Patents
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Abstract
本发明适用于绝缘胶膜技术领域,提供了一种绝缘胶膜,包括基材层,所述基材层上依次附着有涂胶层和离型层;其中,所述涂胶层包括以下重量百分比的原料:聚氨脂82‑88%、稀释剂0.5‑1.2%、阻燃剂8‑12%、环氧树脂余量补足至100%。本发明还提供一种绝缘胶膜的制备方法。本发明的基材层采用PET原膜,亮黑色、低涨缩、强拉伸,阻燃性能好,涂胶层采用热固化方式,耐高温高湿,具有超高剥离强度,粘性可达3000‑3500g/inch,有效的解决了热压后剥离强度不够、产品使用环境恶烈条件下使用等问题,该绝缘胶膜在温度85℃,湿度85%,1000H条件下测试,剥离强度依然可以达到使用要求。
Description
技术领域
本发明属于绝缘胶膜技术领域,尤其涉及一种绝缘胶膜及其制备方法。
背景技术
纯电动汽车使用电能量,在行驶中零排放,不会造成环境污染,比汽油汽车更加节能,而电池包作为电动汽车的动力源头,主要是由多个电池组块和连接系统构成,传统的连接系统易出现水汽腐蚀现象而影响线路,因此通过会采用绝缘胶膜,绝缘胶膜主要用于锂电池侧板、CCS母排。
目前的绝缘胶膜剥离强度差、耐高温效果不好,产品无法长期在温湿度变化较大环境下使用。
发明内容
本发明实施例的目的在于提供一种绝缘胶膜,旨在解决上述背景技术中出现的问题。
本发明实施例是这样实现的,一种绝缘胶膜,包括基材层,所述基材层上依次附着有涂胶层和离型层;
其中,所述涂胶层包括以下重量百分比的原料:聚氨脂82-88%、稀释剂0.5-1.2%、阻燃剂8-12%、环氧树脂余量补足至100%。
优选地,所述涂胶层还包括添加剂,所述添加剂为乙酸乙酯或丁酮,所述添加剂的添加量为聚氨脂、稀释剂、阻燃剂、环氧树脂总质量的15-50%。
优选地,所述基材层为PET膜。
优选地,所述离型层为PE微粘膜。
优选地,所述绝缘胶膜的厚度为180um±10um,其中,所述基材层的厚度为100±5um,所述涂胶层的厚度为30±2um,所述离型层的厚度为50±5um。
本发明实施例的另一目的在于提供一种绝缘胶膜的制备方法,包括以下步骤:
(1)制备涂胶层:称量聚氨脂、稀释剂、阻燃剂、环氧树脂、添加剂,在常温下混合搅拌,进行聚合反应,反应结束后,静置排除气泡或真空排泡,得到所述环氧树脂涂胶层:
(2)制备绝缘胶膜:准备基材层,在基材层的上表面依次附着步骤(1)制备得到的涂胶层和离型层即可。
优选地,步骤(1)中,所述常温为20-26℃,所述搅拌的转速为200-500rpm,所述聚合反应的时间为0.5-1h。
本发明实施例提供的一种绝缘胶膜,基材层采用PET原膜,亮黑色、低涨缩、强拉伸,阻燃性能好,涂胶层采用热固化方式,耐高温高湿,具有超高剥离强度,粘性可达3000-3500g/inch,有效的解决了热压后剥离强度不够、产品使用环境恶烈条件下使用等问题,该绝缘胶膜在温度85℃,湿度85%,1000H条件下测试,剥离强度依然可以达到使用要求。
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。
以下结合具体实施例对本发明的具体实现进行详细描述。
实施例1
一种绝缘胶膜的制备方法,包括以下步骤:
(1)制备涂胶层:称量聚氨脂100kg、稀释剂0.5kg、阻燃剂8.0kg、环氧树脂2.0kg、乙酸乙酯35kg,在常温20℃、200rpm下聚合0.5h,反应结束后,静置排除气泡或真空排泡,得到所述环氧树脂涂胶层:
(2)制备绝缘胶膜:准备基材层,在基材层的上表面依次附着步骤(1)制备得到的涂胶层和离型层即可。
实施例2
一种绝缘胶膜的制备方法,包括以下步骤:
(1)制备涂胶层:称量聚氨脂100kg、稀释剂0.5kg、阻燃剂8.0kg、环氧树脂2.5kg、乙酸乙酯35kg,在常温23℃、350rpm下聚合0.8h,反应结束后,静置排除气泡或真空排泡,得到所述环氧树脂涂胶层:
(2)制备绝缘胶膜:准备PET原膜,在PET原膜的上表面依次附着步骤(1)制备得到的涂胶层和PE微粘膜即可。
实施例3
一种绝缘胶膜的制备方法,包括以下步骤:
(1)制备涂胶层:称量聚氨脂100kg、稀释剂0.5kg、阻燃剂8.0kg、环氧树脂3.0kg、乙酸乙酯35kg,在常温26℃、500rpm下聚合1h,反应结束后,静置排除气泡或真空排泡,得到所述环氧树脂涂胶层:
(2)制备绝缘胶膜:准备PET原膜,在PET原膜的上表面依次附着步骤(1)制备得到的涂胶层和PE微粘膜即可。
实施例4
一种绝缘胶膜的制备方法,包括以下步骤:
(1)制备涂胶层:称量聚氨脂100kg、稀释剂0.5kg、阻燃剂8.0kg、环氧树脂3.5kg、乙酸乙酯35kg,在常温20℃、200rpm下聚合1h,反应结束后,静置排除气泡或真空排泡,得到所述环氧树脂涂胶层:
(2)制备绝缘胶膜:准备PET原膜,在PET原膜的上表面依次附着步骤(1)制备得到的涂胶层和PE微粘膜即可。
实施例5
一种绝缘胶膜的制备方法,包括以下步骤:
(1)制备涂胶层:称量聚氨脂100kg、稀释剂0.5kg、阻燃剂8.0kg、环氧树脂4.0kg、乙酸乙酯35kg,在常温26℃、500rpm下聚合0.5h,反应结束后,静置排除气泡或真空排泡,得到所述环氧树脂涂胶层:
(2)制备绝缘胶膜:准备PET原膜,在PET原膜的上表面依次附着步骤(1)制备得到的涂胶层和PE微粘膜即可。
实施例6
一种绝缘胶膜的制备方法,包括以下步骤:
(1)制备涂胶层:称量聚氨脂100kg、稀释剂0.5kg、阻燃剂8.0kg、环氧树脂2.0kg、丁酮35kg,在常温20℃、200rpm下聚合0.5h,反应结束后,静置排除气泡或真空排泡,得到所述环氧树脂涂胶层:
(2)制备绝缘胶膜:准备基材层,在基材层的上表面依次附着步骤(1)制备得到的涂胶层和离型层即可。
实施例7
一种绝缘胶膜的制备方法,包括以下步骤:
(1)制备涂胶层:称量聚氨脂100kg、稀释剂0.5kg、阻燃剂8.0kg、环氧树脂2.5kg、丁酮35kg,在常温23℃、350rpm下聚合0.8h,反应结束后,静置排除气泡或真空排泡,得到所述环氧树脂涂胶层:
(2)制备绝缘胶膜:准备PET原膜,在PET原膜的上表面依次附着步骤(1)制备得到的涂胶层和PE微粘膜即可。
实施例8
一种绝缘胶膜的制备方法,包括以下步骤:
(1)制备涂胶层:称量聚氨脂100kg、稀释剂0.5kg、阻燃剂8.0kg、环氧树脂3.0kg、丁酮35kg,在常温26℃、500rpm下聚合1h,反应结束后,静置排除气泡或真空排泡,得到所述环氧树脂涂胶层:
(2)制备绝缘胶膜:准备PET原膜,在PET原膜的上表面依次附着步骤(1)制备得到的涂胶层和PE微粘膜即可。
实施例9
一种绝缘胶膜的制备方法,包括以下步骤:
(1)制备涂胶层:称量聚氨脂100kg、稀释剂0.5kg、阻燃剂8.0kg、环氧树脂3.5kg、丁酮35kg,在常温20℃、200rpm下聚合1h,反应结束后,静置排除气泡或真空排泡,得到所述环氧树脂涂胶层:
(2)制备绝缘胶膜:准备PET原膜,在PET原膜的上表面依次附着步骤(1)制备得到的涂胶层和PE微粘膜即可。
实施例10
一种绝缘胶膜的制备方法,包括以下步骤:
(1)制备涂胶层:称量聚氨脂100kg、稀释剂0.5kg、阻燃剂8.0kg、环氧树脂4.0kg、丁酮35kg,在常温26℃、500rpm下聚合0.5h,反应结束后,静置排除气泡或真空排泡,得到所述环氧树脂涂胶层:
(2)制备绝缘胶膜:准备PET原膜,在PET原膜的上表面依次附着步骤(1)制备得到的涂胶层和PE微粘膜即可。
粘着力测试:
对实施例1-实施例5制备得到的绝缘胶膜产品进行粘着力测试,试验过程具体如下:
测试器具:拉力测试机、电动碾压滚轮机、型号为ASTM304不锈钢板(使用前用无尘布沾酒精擦拭不锈钢板,反复擦拭三次以上,目测不锈钢板表面清洁为止,清洁后的不锈钢板不得用手和其它物体接触);
试验片:从五组产品上裁取进行取样,确认外观无破损等异常,然后制成10mm*300mm的样条;
测试方法:把样条贴在测试钢板中央处,再用2KG滚轮于自重下以300mm/min速度在样条上来回压3次,压合好的试片,静态放置20min后测试;
将钢板夹紧在下夹持器中,膜的一端夹紧在上夹持器中,夹持部位不能滑移,以保证所施加的拉力均匀的分布在试样上;
开动设备使机器上下夹持器以300mm/min速度进行测试,测试距离为125mm,测试完毕后将测试结果记录,各实施例的测试结果如表1所示:
表1
双85性能测试:
对实施例1-实施例5制备得到的绝缘胶膜产品进行双85性能测试,试验过程具体如下:
测试器具:高低温冷热冲击箱、拉力测试机;
试验片:从五组产品上裁取,准备测试样件3~5PCS;
测试方法:将试样件放入高低温冷热冲击箱中,设置参数-85℃~85℃,温度上升4℃/min,温度保持时间25min,500个循环,试验总时长1000H,待试样件测试时间达到1000H后,取出试样件,测试试样件外观及剥离力测试,测试完毕后将测试结果,记录各实施例的测试结果如表2所示:
表2
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 (7)
1.一种绝缘胶膜,其特征在于,包括基材层,所述基材层上依次附着有涂胶层和离型层;
其中,所述涂胶层包括以下重量百分比的原料:聚氨脂82-88%、稀释剂0.5-1.2%、阻燃剂8-12%、环氧树脂余量补足至100%。
2.根据权利要求1所述的绝缘胶膜,其特征在于,所述涂胶层还包括添加剂,所述添加剂为乙酸乙酯或丁酮,所述添加剂的添加量为聚氨脂、稀释剂、阻燃剂、环氧树脂总质量的15-50%。
3.根据权利要求1所述的绝缘胶膜,其特征在于,所述基材层为PET膜。
4.根据权利要求1所述的绝缘胶膜,其特征在于,所述离型层为PE微粘膜。
5.根据权利要求1所述的绝缘胶膜,其特征在于,所述绝缘胶膜的厚度为180um±10um,其中,所述基材层的厚度为100±5um,所述涂胶层的厚度为30±2um,所述离型层的厚度为50±5um。
6.一种如权利要求1-5任一所述的绝缘胶膜的制备方法,其特征在于,包括以下步骤:
(1)制备涂胶层:称量聚氨脂、稀释剂、阻燃剂、环氧树脂、添加剂,在常温下混合搅拌,进行聚合反应,反应结束后,静置排除气泡或真空排泡,得到所述环氧树脂涂胶层:
(2)制备绝缘胶膜:准备基材层,在基材层的上表面依次附着步骤(1)制备得到的涂胶层和离型层即可。
7.根据权利要求6所述的绝缘胶膜的制备方法,其特征在于,步骤(1)中,所述常温为20-26℃,所述搅拌的转速为200-500rpm,所述聚合反应的时间为0.5-1h。
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