CN113399227A - 一种适用于电池包防水疏水的复合膜层及其制备方法 - Google Patents
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Abstract
本发明公开了一种适用于电池包防水疏水的复合膜层及其制备方法，该种适用于电池包防水疏水的复合膜层包括电池包本体、聚乙烯防水层和CFx疏水层，所述电池包本体基底表面覆盖有一层聚乙烯防水层，所述聚乙烯防水层表面覆盖有一层CFx疏水层，所述聚乙烯防水层为聚乙烯纳米膜层，所述CFx疏水层为CFX纳米膜层。通过上述方式，本发明膜层更薄，制备时间短，表面防水、疏水效果更好。
Description
技术领域
本发明涉及电池隔膜技术领域，特别是涉及一种适用于电池包防水疏水的复合膜层及其制备方法。
背景技术
派瑞林是一种投明无色的聚酯保护材料，适用于室温下的真空镀膜，真空镀膜压力在10-5托以下,而派瑞林工艺在0.1托左右，涂层的厚度可控制在1-100微米之间,该涂层是美国在60年代初专利开发的,首次应用于美国军用印刷电路板、航空航天和水下发射装置的微电子元件领域,1972年纳入英国军用極准:ML-1-46058C。
目前行业中派瑞林膜层的镀膜流程为微纳米加工技术即化学气相沉积工艺(CVD)，将粉末状的纳米原料放入真空纳米涂层设备的蒸发室,通过150℃-180℃的温度蒸发为气态分子,在真空(1.0*10-2torr)作用下气态的10nm以下纳米分子进入到裂解室,在裂解室680℃-700℃的高温下裂解为具有反应活性的单体,活性单体与单体之间重新聚合,形成一层致密无针孔的纳米膜层。
在充电汽车使用的电池包中，对于电池包的防水性要求很高，现有技术都是使用传统的三防漆或单层膜来达到防水的效果，这种防水膜层厚度相对较厚，通常达到十几个微米，且没有表面疏水效果，基于以上缺陷和不足，有必要对现有的技术予以改进，设计出一种适用于电池包防水疏水的复合膜层及其制备方法。
发明内容
本发明主要解决的技术问题是提供一种适用于电池包防水疏水的复合膜层及其制备方法，膜层更薄，制备时间短，表面防水、疏水效果更好。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种适用于电池包防水疏水的复合膜层，该种适用于电池包防水疏水的复合膜层包括电池包本体、聚乙烯防水层和CFx疏水层，所述电池包本体基底表面覆盖有一层聚乙烯防水层，所述聚乙烯防水层表面覆盖有一层CFx疏水层，所述聚乙烯防水层为聚乙烯纳米膜层，所述CFx疏水层为CFX纳米膜层。
优选的是，所述聚乙烯防水层和CFx疏水层厚度为1nm～10μm。
优选的是，所述聚乙烯纳米膜层和CFX纳米膜层呈网状排布，如复眼结构。
一种适用于电池包防水疏水的复合膜层的制备方法，其特征在于：包括以下步骤：
步骤S1：将需要做防水保护的电池包表面用酒精或异丙醇进行擦拭，清除表面particle微粒；
步骤S2：将需要做防水保护的电池包放入镀膜设备PECVD等离子体增强化学气相淀积的腔室中，将设备真空度抽至-1torr；
步骤S3：通入氩气至腔室内，对电池包表面进行清洁，将电池包表面有机物全部去除；
步骤S4：通入二甲苯液体至腔室内，气体分子通过plasma等离子电离聚合排成为特有的网状顺序排布，呈复眼结构，形成聚乙烯纳米膜层沉积在电池包基底表面；
步骤S5：通入六氟丙烯气体至腔室内，气体分子通过plasma等离子电离聚合排列为特有的网状顺序排布，呈复眼结构，形成氟化石墨CFX纳米膜层沉积在聚乙烯纳米膜层表面。
与现有技术相比，本发明的有益效果是：膜层更薄，制备时间短，表面防水、疏水效果更好。
附图说明
图1为一种适用于电池包防水疏水的复合膜层的结构示意图。
图2为聚乙烯纳米膜层和CFX纳米膜层显微镜下观察示意图。
具体实施方式
下面结合附图对本发明较佳实施例进行详细阐述，以使发明的优点和特征能更易于被本领域技术人员理解，从而对本发明的保护范围做出更为清楚明确的界定。
请参阅图1和图2，本发明实施例包括：
一种适用于电池包防水疏水的复合膜层，该种适用于电池包防水疏水的复合膜包括电池包本体1、聚乙烯防水层2和CFx疏水层3，所述电池包本体1基底表面覆盖有一层聚乙烯防水层2，所述聚乙烯防水层2表面覆盖有一层CFx疏水层3，所述聚乙烯防水层2为聚乙烯纳米膜层，所述CFx疏水层3为CFX纳米膜层。
所述聚乙烯防水层2和CFx疏水层3厚度为1nm～10μm。
所述聚乙烯纳米膜层和CFX纳米膜层呈网状排布，如复眼结构。
一种适用于电池包防水疏水的复合膜层的制备方法，其特征在于：包括以下步骤：
步骤S1：将需要做防水保护的电池包表面用酒精或异丙醇进行擦拭，清除表面particle微粒；
步骤S2：将需要做防水保护的电池包放入镀膜设备PECVD等离子体增强化学气相淀积的腔室中，将设备真空度抽至-1torr；
步骤S3：通入氩气至腔室内，对电池包表面进行清洁，将电池包表面有机物全部去除；
步骤S4：通入二甲苯液体至腔室内，气体分子通过plasma等离子电离聚合排成为特有的网状顺序排布，类似于蚊子的复眼结构，如图2所示，形成聚乙烯纳米膜层沉积在电池包基底表面；
步骤S5：通入六氟丙烯气体至腔室内，气体分子通过plasma等离子电离聚合排列为特有的网状顺序排布，类似于蚊子的复眼结构，如图2所示，形成氟化石墨CFX纳米膜层沉积在聚乙烯纳米膜层表面
所述上述步骤的制备时间是在20分钟～1天。
本发明一种适用于电池包防水疏水的复合膜层及其制备方法，膜层更薄，制备时间短，表面防水、疏水效果更好。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。
Claims (4)
1.一种适用于电池包防水疏水的复合膜层，其特征在于：该种适用于电池包防水疏水的复合膜层包括电池包本体、聚乙烯防水层和CFx疏水层，所述电池包本体基底表面覆盖有一层聚乙烯防水层，所述聚乙烯防水层表面覆盖有一层CFx疏水层，所述聚乙烯防水层为聚乙烯纳米膜层，所述CFx疏水层为CFX纳米膜层。
2.根据权利要求1所述的一种适用于电池包防水疏水的复合膜层，其特征在于：所述聚乙烯防水层和CFx疏水层厚度为1nm～10μm。
3.根据权利要求1所述的一种适用于电池包防水疏水的复合膜层，其特征在于：所述聚乙烯纳米膜层和CFX纳米膜层呈网状排布，如复眼结构。
4.一种适用于电池包防水疏水的复合膜层的制备方法，其特征在于：包括以下步骤：
步骤S1：将需要做防水保护的电池包表面用酒精或异丙醇进行擦拭，清除表面particle微粒；
步骤S2：将需要做防水保护的电池包放入镀膜设备PECVD等离子体增强化学气相淀积的腔室中，将设备真空度抽至-1torr；
步骤S3：通入氩气至腔室内，对电池包表面进行清洁，将电池包表面有机物全部去除；
步骤S4：通入二甲苯液体至腔室内，气体分子通过plasma等离子电离聚合排成为特有的网状顺序排布，呈复眼结构，形成聚乙烯纳米膜层沉积在电池包基底表面；
步骤S5：通入六氟丙烯气体至腔室内，气体分子通过plasma等离子电离聚合排列为特有的网状顺序排布，呈复眼结构，形成氟化石墨CFX纳米膜层沉积在聚乙烯纳米膜层表面。
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