CN107148207A - 一种复合微球颗粒电磁吸波填料以及具有该电磁吸波填料的电磁屏蔽材料 - Google Patents

一种复合微球颗粒电磁吸波填料以及具有该电磁吸波填料的电磁屏蔽材料 Download PDF

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CN107148207A
CN107148207A CN201710449180.5A CN201710449180A CN107148207A CN 107148207 A CN107148207 A CN 107148207A CN 201710449180 A CN201710449180 A CN 201710449180A CN 107148207 A CN107148207 A CN 107148207A
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electromagnetic wave
wave absorption
absorption filler
electromagnetic
complex microsphere
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林壁鹏
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Shenzhen Xilu Photoelectricity Technology Co Ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/103—Metal fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/104—Oxysalt, e.g. carbonate, sulfate, phosphate or nitrate particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/105—Metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/12—Mixture of at least two particles made of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/21—Anti-static
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/212—Electromagnetic interference shielding

Abstract

本发明公开了一种复合微球颗粒电磁吸波填料以及具有该电磁吸波填料的电磁屏蔽材料，所述电磁吸波填料包括40‑50％硅酸盐纳米材料、15‑20％磁性金属微粉、10‑15％多晶铁纤维、5‑10％导电高聚物和粘结剂，所述电磁屏蔽材料包括基板和屏蔽层，所述屏蔽层设置在所述基板上面，所述屏蔽层上面设置有导电层，所述导电层上面设置有离型膜。有益效果在于：厚度薄、质量轻、吸收力强，还可满足多频段屏蔽，大大提高了电磁屏蔽的屏蔽功能。

Description

一种复合微球颗粒电磁吸波填料以及具有该电磁吸波填料的 电磁屏蔽材料
技术领域
本发明涉及屏蔽材料领域，具体涉及一种复合微球颗粒电磁吸波填料以及具有该电磁吸波填料的电磁屏蔽材料。
背景技术
电磁波是电磁场的一种运动形态，它以辐射的方式向空间内传播。电磁波不仅会对电子设备的信号产生干扰，还会对人体健康造成危害，长期遭受电磁波辐射会造成人体免疫力下降、记忆力减退等各种病症，因此需利用电磁屏蔽设施对电磁波进行屏蔽。现有的电磁屏蔽设施大多采用金属网或石墨板对电磁波进行屏蔽，不同频段的屏蔽需使用不同材质的金属网或不同厚度的石墨板，单一种类的金属网和石墨板所屏蔽的电磁波频段较窄，且金属网和石墨板均较重，对电磁波的吸收率也较低，屏蔽波段较高时其所使用厚度也会随之增加。
发明内容
本发明的目的就在于为了解决上述问题而提供一种复合微球颗粒电磁吸波填料。
本发明通过以下技术方案来实现上述目的：
一种复合微球颗粒电磁吸波填料，包括硅酸盐纳米材料、磁性金属微粉、多晶铁纤维、导电高聚物和粘结剂，其中：
在本实施例中，所述硅酸盐纳米材料为中空硅酸盐纳米微球，密度为0.8g/cm3。
在本实施例中，所述磁性金属微粉为粒径为20nm-1.5μm的Fe粉、Ni粉或Co粉的金属单质或其合金微粒，镀制于所述硅酸盐纳米材料的微球表面，厚度为2.0μm。
在本实施例中，所述多晶铁纤维为纳米级多晶纤维,掺杂于所述磁性金属微粉内。
在本实施例中，所述导电高聚物为聚乙炔、聚噻吩、聚苯胺或聚苯撑中的任一种。
在本实施例中，所述粘结剂为环氧有机硅、聚氨酯或丙烯酸中的任一种。
一种具有电磁吸波填料的电磁屏蔽材料，包括基板和屏蔽层，所述屏蔽层设置在所述基板上面，所述屏蔽层上面设置有导电层，所述导电层上面设置有离型膜。
在本实施例中，所述基板为绝缘板。
在本实施例中，所述屏蔽层为利用所述电磁吸波填料制成的纤维状板。
在本实施例中，所述导电层为纳米导电石墨涂层，厚度为0.4-0.6mm。
有益效果在于：厚度薄、质量轻、吸收力强，还可满足多频段屏蔽，大大提高了电磁屏蔽的屏蔽功能。
附图说明
图1是本发明所述一种具有电磁吸波填料的电磁屏蔽材料的结构视图。
1、离型膜；2、导电层；3、屏蔽层；4、基板。
具体实施方式
下面结合附图对本发明作进一步说明：
如图1所示，一种复合微球颗粒电磁吸波填料，包括硅酸盐纳米材料、磁性金属微粉、多晶铁纤维、导电高聚物和粘结剂，其中：
在本实施例中，所述硅酸盐纳米材料为中空硅酸盐纳米微球，密度为0.8g/cm3，不仅重量轻，且具有较高的介电常数和复磁导率，可吸收高频电磁波。
在本实施例中，所述磁性金属微粉为粒径为20nm-1.5μm的Fe粉、Ni粉或Co粉的金属单质或其合金微粒，镀制于所述硅酸盐纳米材料的微球表面，厚度为2.0μm，所述磁性金属微粉具有较高的磁导率虚部及磁损耗角正切值，主要通过磁滞损耗、涡流损耗及自然共振损耗等机制吸收衰减电磁波。
在本实施例中，所述多晶铁纤维为纳米级多晶纤维,掺杂于所述磁性金属微粉内，从而改变所述磁性金属微粉低频段吸收性差的缺点，增加所述磁性金属微粉吸收电磁波的频带宽度范围。
在本实施例中，所述导电高聚物为聚乙炔、聚噻吩、聚苯胺或聚苯撑中的任一种，所述导电高聚物可反射电磁波。
在本实施例中，所述粘结剂为环氧有机硅、聚氨酯或丙烯酸中的任一种。
一种具有电磁吸波填料的电磁屏蔽材料，包括基板4和屏蔽层3，所述屏蔽层3设置在所述基板4上面，所述屏蔽层3上面设置有导电层2，所述导电层2上面设置有离型膜1。
在本实施例中，所述基板4为绝缘板。
在本实施例中，所述屏蔽层3为利用所述电磁吸波填料制成的纤维状板，所述屏蔽层3用于屏蔽电磁波。
在本实施例中，所述导电层2为纳米导电石墨涂层，厚度为0.4-0.6mm，所述导电层2用于屏蔽静电。
以上显示和描述了本发明的基本原理、主要特征和优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其效物界定。

Claims (10)

1.一种复合微球颗粒电磁吸波填料，其特征在于：包括硅酸盐纳米材料、磁性金属微粉、多晶铁纤维、导电高聚物和粘结剂，其中：
。
2.根据权利要求1所述的一种复合微球颗粒电磁吸波填料，其特征在于：所述硅酸盐纳米材料为中空硅酸盐纳米微球，密度为0.8g/cm3。
3.根据权利要求1所述的一种复合微球颗粒电磁吸波填料，其特征在于：所述磁性金属微粉为粒径为20nm-1.5μm的Fe粉、Ni粉或Co粉的金属单质或其合金微粒，镀制于所述硅酸盐纳米材料的微球表面，厚度为2.0μm。
4.根据权利要求1所述的一种复合微球颗粒电磁吸波填料，其特征在于：所述多晶铁纤维为纳米级多晶纤维,掺杂于所述磁性金属微粉内。
5.根据权利要求1所述的一种复合微球颗粒电磁吸波填料，其特征在于：所述导电高聚物为聚乙炔、聚噻吩、聚苯胺或聚苯撑中的任一种。
6.根据权利要求1所述的一种复合微球颗粒电磁吸波填料，其特征在于：所述粘结剂为环氧有机硅、聚氨酯或丙烯酸中的任一种。
7.一种具有电磁吸波填料的电磁屏蔽材料，其特征在于：包括基板和屏蔽层，所述屏蔽层设置在所述基板上面，所述屏蔽层上面设置有导电层，所述导电层上面设置有离型膜。
8.根据权利要求7所述的一种具有电磁吸波填料的电磁屏蔽材料，其特征在于：所述基板为绝缘板。
9.根据权利要求7所述的一种具有电磁吸波填料的电磁屏蔽材料，其特征在于：所述屏蔽层为利用所述电磁吸波填料制成的纤维状板。
10.根据权利要求7所述的一种具有电磁吸波填料的电磁屏蔽材料，其特征在于：所述导电层为纳米导电石墨涂层，厚度为0.4-0.6mm。
CN201710449180.5A 2017-06-14 2017-06-14 一种复合微球颗粒电磁吸波填料以及具有该电磁吸波填料的电磁屏蔽材料 Pending CN107148207A (zh)

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CN109207019A (zh) * 2018-08-27 2019-01-15 国网河南省电力公司检修公司 一种导电防腐涂料及其制备方法
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CN109068555A (zh) * 2018-09-18 2018-12-21 北京梦之墨科技有限公司 一种电磁屏蔽箱
CN109337431A (zh) * 2018-10-25 2019-02-15 深圳市睿华涂布科技有限公司 一种高聚物吸波材料
CN111423729A (zh) * 2020-05-13 2020-07-17 江苏雷兹盾材料科技有限公司 一种无溶剂高导热吸波磁性硅橡胶及其制备方法

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Application publication date: 20170908