CN113072886A - 一种高性能导磁双面胶带及其制造方法 - Google Patents
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Abstract
本发明揭示了一种高性能导磁双面胶带,包括石墨烯层、设于石墨烯层两侧的压敏胶层、分别粘附于压敏胶层上的拼接层、以及粘附于拼接层上的离型层;拼接层包括交替拼接且平铺设置的导磁条和散热条,拼接层与离型层之间设有粘胶层。本发明实现了具有超薄、导磁性能强、散热快的双面胶带结构。
Description
技术领域
本发明属于胶带制造技术领域,尤其涉及一种高性能导磁双面胶带及其制造方法。
背景技术
随着电子化、信息化的高速发展,电子产品的体积越来越小,工作频率越来越高,伴随产生的电磁辐射也越来越强,电磁屏蔽成为必然的趋势。电磁屏蔽胶带已广泛应用于电子产品,特别是消费类电子产品中进行关键部位的电磁屏蔽和保护。
现有一种5G电子元件用导磁阻燃无基材胶带,替代了传统的以液态导磁胶粘剂和树脂为主料的工艺,具体公开了:包括从上至下依次层叠的第一离型层、第一有机硅压敏胶层、导磁层、粘合层、散热条、第二有机硅压敏胶层和第二离型层,所述导磁层为填充有磁性碳基铁粉的丙烯酸酯胶层,所述散热条为聚磷酸铵阻燃浆料改性丙烯酸酯胶层,所述第一有机硅压敏胶层、粘合层、散热条和第二有机硅压敏胶层中均含有导磁材料。剥离离型层后,第一有机硅压敏胶层、导磁层、粘合层、散热条和第二有机硅压敏胶层中的导磁材料相互作用,在磁性元件间形成导磁通道。
上述无基材胶带具备较好附着性能,同时具备导磁性能和阻燃性能,由于其无基材设置,连接强度受限,导磁层和散热条发挥性能较低。
发明内容
本发明的目的是为了解决上述技术问题,而提供一种高性能导磁双面胶带及其制造方法,从而实现具有超薄、导磁性能强、散热快的双面胶带结构。为了达到上述目的,本发明技术方案如下:
一种高性能导磁双面胶带,包括石墨烯层、设于石墨烯层两侧的压敏胶层、分别粘附于压敏胶层上的拼接层、以及粘附于拼接层上的离型层;拼接层包括交替拼接且平铺设置的导磁条和散热条,拼接层与离型层之间设有粘胶层。
具体的,所述导磁条为填充有导磁填料的丙烯酸胶粘剂。
具体的,所述散热条为填充有陶瓷填料的丙烯酸胶粘剂。
具体的,所述压敏胶层的厚度为5-10μm。
具体的,所述导磁条和散热条的厚度相同,均为10-15μm。
高性能导磁双面胶带制造方法,包括以下步骤:
1)、将石墨烯层定位在初始离型层表面;
2)、石墨烯层表面进行涂布压敏胶层,在压敏胶层表面铺覆导磁层;
3)、导磁层的表面粘附置换离型纸,该置换离型纸与导磁层的粘附力大于导磁层与压敏胶层的粘附力;
4)、对置换离型纸进行模切,切断至导磁层的层面,按照等距间隔的尺寸形成切割线,形成多组导磁条;
5)、将置换离型纸携带导磁层进行间隔距离的撕除,形成条形凹槽;
6)、将条形凹槽内填充入散热条,受热使其与导磁条熔融相接;
7)、将石墨烯层从初始离型层表面剥离,重复步骤2)-6)对石墨烯层的相对面进行铺覆,形成主体层;
8)、主体层的两面均撕除置换离型纸后贴附外层离型层,形成高性能导磁双面胶带。
与现有技术相比,本发明一种高性能导磁双面胶带及其制造方法的有益效果主要体现在:
石墨烯层具有良好的导热性能,通过在其两侧粘附导磁条和散热条,增加导磁性和散热性的特点,交替间隔布置的导磁条和散热条,能发挥优异的材料特点,附着于石墨烯层基材上,整体连接强度性能显著;双面胶带制造方法简易,具有超薄、导磁性能强、散热快的优点。
附图说明
图1为本发明实施例的制造流程示意图;
图中数字表示:
1石墨烯层、2压敏胶层、3拼接层、31导磁条、32散热条、33置换离型纸、34条形凹槽、4离型层、5粘胶层。
具体实施方式
下面对本发明实施例中的技术方案进行清楚、完整的描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。
实施例:
参照图1所示,本实施例为一种高性能导磁双面胶带,包括石墨烯层1、设于石墨烯层1两侧的压敏胶层2、分别粘附于压敏胶层2上的用于导磁和散热的拼接层3、以及粘附于拼接层3上的离型层4。
拼接层3包括交替拼接且平铺设置的导磁条31和散热条32,导磁条31为填充有导磁填料的丙烯酸胶粘剂。散热条32为填充有陶瓷填料的丙烯酸胶粘剂。
导磁填料31为粒径为15-25nm的纳米铁粉、镍粉、羰基铁粉、铁的氧化物、铁基合金粉中的一种。铁基合金粉可为铁与镍、银等粒子的复合粉体,也可为氧化铁与镍、银等的复合粉体。
石墨烯层1的厚度为5-10μm。压敏胶层2的厚度为5-10μm。导磁条31和散热条32的厚度相同,均为10-15μm。
陶瓷填料为纳米氧化锆、纳米氧化铝、纳米金刚石、纳米氮化硼之一或其混合物。
拼接层3与离型层4之间设有粘胶层5,起到双面连接的作用。
高性能导磁双面胶带制造方法,包括以下步骤:
1)、将石墨烯层1定位在初始离型层表面;
2)、石墨烯层1表面进行涂布压敏胶层2,在压敏胶层2表面铺覆导磁层;
3)、导磁层的表面粘附置换离型纸33,该置换离型纸33与导磁层的粘附力大于导磁层与压敏胶层2的粘附力;
4)、对置换离型纸33进行模切,切断至导磁层的层面,按照等距间隔的尺寸形成切割线,形成多组导磁条31;
5)、将置换离型纸33携带导磁层进行间隔距离的撕除,形成条形凹槽34;
6)、将条形凹槽34内填充入散热条32,受热使其与导磁条31熔融相接;
7)、将石墨烯层1从初始离型层11表面剥离,重复步骤2)-6)对石墨烯层1的相对面进行铺覆,形成主体层;
8)、主体层的两面均撕除置换离型纸33后贴附外层的离型层4,形成高性能导磁双面胶带。
应用本实施例时,石墨烯层1具有良好的导热性能,通过在其两侧粘附导磁条31和散热条32,增加导磁性和散热性的特点,交替间隔布置的导磁条31和散热条32,能发挥优异的材料特点,附着于石墨烯层1基材上,整体连接强度性能显著;双面胶带制造方法简易,具有超薄、导磁性能强、散热快的优点。
以上所述的仅是本发明的一些实施方式。对于本领域的普通技术人员来说,在不脱离本发明创造构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。
Claims (6)
1.一种高性能导磁双面胶带,其特征在于:包括石墨烯层、设于石墨烯层两侧的压敏胶层、分别粘附于压敏胶层上的拼接层、以及粘附于拼接层上的离型层;拼接层包括交替拼接且平铺设置的导磁条和散热条,拼接层与离型层之间设有粘胶层。
2.根据权利要求1所述的一种高性能导磁双面胶带,其特征在于:所述导磁条为填充有导磁填料的丙烯酸胶粘剂。
3.根据权利要求1所述的一种高性能导磁双面胶带,其特征在于:所述散热条为填充有陶瓷填料的丙烯酸胶粘剂。
4.根据权利要求1所述的一种高性能导磁双面胶带,其特征在于:所述压敏胶层的厚度为5-10μm。
5.根据权利要求1所述的一种高性能导磁双面胶带,其特征在于:所述导磁条和散热条的厚度相同,均为10-15μm。
6.高性能导磁双面胶带制造方法,其特征在于,包括以下步骤:
1)、将石墨烯层定位在初始离型层表面;
2)、石墨烯层表面进行涂布压敏胶层,在压敏胶层表面铺覆导磁层;
3)、导磁层的表面粘附置换离型纸,该置换离型纸与导磁层的粘附力大于导磁层与压敏胶层的粘附力;
4)、对置换离型纸进行模切,切断至导磁层的层面,按照等距间隔的尺寸形成切割线,形成多组导磁条;
5)、将置换离型纸携带导磁层进行间隔距离的撕除,形成条形凹槽;
6)、将条形凹槽内填充入散热条,受热使其与导磁条熔融相接;
7)、将石墨烯层从初始离型层表面剥离,重复步骤2)-6)对石墨烯层的相对面进行铺覆,形成主体层;
8)、主体层的两面均撕除置换离型纸后贴附外层离型层,形成高性能导磁双面胶带。
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