CN203198346U - 防静电膜 - Google Patents

防静电膜 Download PDF

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CN203198346U
CN203198346U CN 201320174611 CN201320174611U CN203198346U CN 203198346 U CN203198346 U CN 203198346U CN 201320174611 CN201320174611 CN 201320174611 CN 201320174611 U CN201320174611 U CN 201320174611U CN 203198346 U CN203198346 U CN 203198346U
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邵敬
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Abstract

本专利解决的技术问题是提供一种表面电阻小,内层可靠的防静电膜,其包括表层和内层,所述表层和内层之间还设置有外基层、中间层、和内基层,其特征是所述内层为聚噻吩分散液层或碳纳米管分散液层。所述聚噻吩分散液层或碳纳米管分散液层的厚度为U,0um<U<1um。所述外基层为PET,所述PET的厚度为W,12um<W<30um。所述内基层为PE、CPP或CPE,所述内基层的厚度为M,20um<M。所述中间层为AL,所述中间层的厚度为N,
Figure DSA00000876381900011
本实用新型防静电膜内表面电阻可控制在107Ω/sq以下,可使内层的防护作用高于1011Ω/sq;静电易于耗散具有永久防静电效果,减少对静电敏感元件的影响。

Description

防静电膜
技术领域
本发明涉及一种防静电包装材料,尤指电子器件或者易产生静电产品的包装用的防静电膜。
背景技术
防静电膜是在PE原料中加入进口防静电剂使其表面电阻达到一定值后,本身摩擦不产生静电,经高温定型后经久耐磨,从而起到良好的抗静电效果。避免人体和外界环境的静电对产品造成损坏。现有技术中各防静电产品一般为多层结构,其防静电金属层为中间层,内层一般采取涂防静电层的方式。目前的缺陷是很难控制内表面电阻处于较低的范围,静电耗散速度较慢,同时该防静电层性能不持久可靠,低湿度环境下失去功能即表面电阻大于1012Ω/sq。而专利CN101483962A所述的结构的内层是由普通PE或普通CPP与变性PE或变性CPP复合而成防静电内层,其虽然也能达到防静电的效果,但是生产工艺相对还是复杂了,并且产品的稳定性还不够,内层表面电阻达不到小于107Ω/sq的较高要求。
发明内容
本发明要解决的技术问题是针对现有防静电膜存在的问题,提供一种表面电阻小,内层可靠的防静电膜,其包括表层和内层,所述表层和内层之间还设置有外基层、中间层、和内基层,其特征是所述内层为聚噻吩分散液层或碳纳米管分散液层。
所述聚噻吩分散液层或碳纳米管分散液层的厚度为U,0um<U<1um。
所述外基层为PET,所述PET的厚度为W,12um<W<30um。
所述内基层为PE、CPP或CPE,所述内基层的厚度为M,20um<M。
所述中间层为AL,所述中间层的厚度为N,
Figure BSA00000876382200021
所述中间层和外基层材料互换。
跟现有技术相比,本发明防静电膜内表面电阻可控制在107Ω/sq以下,既使在极低环境湿度下(如12%RH)也能达到107Ω/sq以下,符合国际标准ANSI/ESDSTM11.11的测试要求。可使内层的防护作用高于1011Ω/sq;静电易于耗散具有永久防静电效果,减少对静电敏感元件的影响。
附图说明
图1为本实用型新层结构剖面图。
具体实施方式
如图1所示,防静电膜,其包括表层1和内层5所述表层1和内层5之间还设置有外基层2、中间层3、和内基层4;所述的表层1为防静电涂层,喷涂或者辊涂在外基层2上形成,材料与内层5相同,即为聚噻吩分散液层或纳米管分散液层,表层1的表面电阻R,103Ω<R<1011Ω/SQ。所述的外基层2为PET材料,厚度在12um和30um之间;中间层3为金属AL层,厚度为大于
Figure BSA00000876382200022
(埃),并且与外基层2可以互换;所述的内基层4的材料为PE、CPP或CPE,其厚度大于20um;内层5为防静电涂层与外层材料可以相同,所述内层5同样是由聚噻吩分散液或碳纳米管分散液喷涂或者辊涂在内基层4上形成,其厚度为0至1um之间。所形成的表面电阻小于107Ω/sq,使内层5的防护作用高于1011Ω/sq;静电易于消散,减少对静电敏感元件损坏,其中碳纳米管分散液层采用的是直径在3u至5um的碳纳米管。聚噻吩的合成可用化学法和电化学制成;将噻吩单体与电解质过氯酸四乙基铵混合加到硝基苯中,以玻璃板上镀上氧化铟,氧化锡分别作阳极和阴极进行电化学聚合,电流密度为2mA/cm2,噻吩在阳极表面发生聚合,形成墨绿色的聚噻吩薄膜(含有过氯酸盐离子),电解温度为-20-+30℃,通电20min,可生成约10μm厚的薄膜,很易从电极上剥下来,这种薄膜当在100℃空气中加热时不分解,本身是柔性的,制造工艺较简单,可得到导电率为103Ω/SQ。
所述内基层4中的PE为聚乙烯,CPP为聚丙烯,CPE为氯化聚乙烯。
本防静电膜的外基层2和内基层4也可以采用PET(聚对苯二甲酸乙二酯)作为基材,所述中间层AL层可以采用铁层、铜层或钛层,该金属层进行表面处理后作为中间基层两边设置外基层2和内基层4,再在内基层2和外基层4的外侧涂覆防静电涂层,及外层1和内层5。可以将该防静电膜裁剪后热封或其它方法制成防静电袋。这样制成的防静电膜,其内层5防静电性能可靠,表面电阻可达107Ω/sq以下。
本实用新型所述防静电膜通过上述不同的材质复合而成,其中内基层4可将普通PE或普通CPP与变性PE复合形成,也可将普通PE或普通CPP与变性CPP复合形成膜。本实用型新产品防水、防潮、防静电;隔氧、遮光、防挥发!主要用于IC、电阻、电容、二极管、三级管、PCB板半成品/成品、网络通讯、感光器材、仪器仪表设备等精密电子元器件的静电防护包装。

Claims (5)

1.防静电膜,其包括表层(1)和内层(5),所述表层(1)和内层(5)之间还设置有外基层(2)、中间层(3)、和内基层(4),其特征是所述内层(5)为聚噻吩分散液层或碳纳米管分散液层。 
2.根据权利要求1所述的防静电膜,其特征在于:所述聚噻吩分散液层或纳米管分散液层的厚度为U,0um<U<1um。 
3.根据权利要求1所述的防静电膜,其特征在于:所述外基层(2)为PET,所述PET的厚度为W,12um<W<30um。 
4.根据权利要求1所述的防静电膜,其特征在于:所述中间层(3)为AL,所述中间层(3)的厚度为N,
Figure DEST_PATH_FSB0000112991330000011
。 
5.根据权利要求1至4之一所述的防静电膜,其特征在于:所述中间层(3)和外基层(2)互换。 
CN 201320174611 2013-04-07 2013-04-07 防静电膜 Expired - Lifetime CN203198346U (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108081726A (zh) * 2018-02-05 2018-05-29 浙江欣麟新材料技术有限公司 一种防静电保护膜及其用途

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108081726A (zh) * 2018-02-05 2018-05-29 浙江欣麟新材料技术有限公司 一种防静电保护膜及其用途

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