A kind of flexible and stretchable electromagnetic shielding film and preparation method thereof
An electromagnetic shielding film and electromagnetic shielding technology, applied in the fields of magnetic field/electric field shielding, chemical instruments and methods, electrical components, etc., can solve the problems of poor bonding ability between metals and materials, loss of shielding performance, easy scratching of coatings, etc., to achieve Excellent electromagnetic shielding performance, improved electromagnetic shielding performance, and stable electromagnetic shielding performance
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Embodiment 1
[0034] Example 1: Ultra-thin elastic and stretchable electromagnetic shielding film
[0035] A method for preparing a flexible and stretchable electromagnetic shielding film, the specific steps are:
[0036] The first step: immerse the carbon nanotube film in the graphene suspension for 3 hours, immerse once, take it out, and let it dry naturally at room temperature to obtain a flexible nano-electromagnetic shielding composite film 2, and pass conductive Copper wire electrode adhered by silver glue;
[0037] The selected size of the carbon nanotube film is 20×28cm 2 The carbon nanotube film (Suzhou Institute of Nanotechnology and Nano-Bionics, Chinese Academy of Sciences) is obtained from multi-walled carbon nanotubes. The diameter of carbon nanotubes is about 20nm, the film thickness is 20um, the porosity is 75%, and the tensile strength is about 200MPa, conductivity about 1×10 5 S / m; The concentration of described graphene suspension is the graphene suspension of 2mg / ml (...
Embodiment 2
[0045] Embodiment 2: Elastic electromagnetic shielding film with ultra-high shielding effectiveness
[0046] A method for preparing a flexible and stretchable electromagnetic shielding film, the specific steps are:
[0047] The first step: immerse three carbon nanotube films in the graphene suspension respectively for 3 hours, immerse once, take them out, and dry them naturally at room temperature to obtain a three-layer flexible nano-electromagnetic shielding composite film 2, in which One end of the two pieces is adhered to the copper wire electrode by coating conductive silver glue;
[0048]The selected size of the carbon nanotube film is 20×30cm 2 The carbon nanotube film (Suzhou Institute of Nanotechnology and Nano-Bionics, Chinese Academy of Sciences) is obtained from multi-walled carbon nanotubes. The diameter of carbon nanotubes is about 20nm, the film thickness is 20um, the porosity is 75%, and the tensile strength is about 200MPa, conductivity about 1×10 5 S / m; Th...
Embodiment 3
[0057] Example 3: Elastic and Stretchable Electromagnetic Shielding Adhesive Film
[0058] A method for preparing a flexible and stretchable electromagnetic shielding film, the specific steps are:
[0059] The first step: immerse the carbon nanotube film in the graphene suspension for 3 hours, immerse once, take it out, and let it dry naturally at room temperature to obtain a flexible nano-electromagnetic shielding composite film 2, and pass conductive Copper wire electrode adhered by silver glue;
[0060] The selected size of the carbon nanotube film is 20×30cm 2 The carbon nanotube film (Suzhou Institute of Nanotechnology and Nano-Bionics, Chinese Academy of Sciences) is obtained from multi-walled carbon nanotubes. The diameter of carbon nanotubes is about 20nm, the film thickness is 20um, the porosity is 75%, and the tensile strength is about 200MPa, conductivity about 1×10 5 S / m; The concentration of described graphene suspension is the graphene suspension of 2mg / ml (Ne...
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