A kind of anti-high-power microwave shielding film and preparation method thereof

Abstract

The invention discloses a high-power microwave-resistant shielding film and a preparation method thereof, comprising the following steps: S1: coating the surface of a modified carbon nanotube with a metal layer, that is, a coated carbon nanotube; S2: combining zinc ferrite and wood Mixing plain-titanium dioxide is modified zinc ferrite; S3: preparing polypropylene elastomer; S4: mixing polyimide fiber, aramid pulp, and carbon fiber evenly, and performing in-situ polymerization and activation reactions, which is Electromagnetic shielding material; S5: Prepare adhesive; S6: Dissolve epoxy resin in acetone solution, add coated carbon nanotubes, graphite, modified zinc ferrite, polypropylene elastomer, electromagnetic shielding material, and adhesive and mix evenly. It is the slurry; S7: The slurry is extruded, solidified, and dried to form the shielding film. The shielding film prepared by this preparation method has good electromagnetic shielding effect, heat resistance, wave absorption, tensile strength, and stability. properties, insulation and UV shielding.

Description

A kind of shielding film against high-power microwave and preparation method thereof technical field [0001] The present invention relates to the technical field of shielding films, in particular to a shielding film resistant to high-power microwaves and a preparation method thereof. Background technique [0002] With the development of science and technology, the 5G era has come, and the frequency of use of electronic products is getting higher and higher. Mobile phones have become a part of our lives, but these electronic devices are unavoidable to generate electromagnetic interference, which makes the Electromagnetic interference is ubiquitous in our daily environment. In addition to affecting the normal operation of electronic devices, electromagnetic interference also It will cause harm to the human body. In some European and American countries, strict regulations have been made on electromagnetic interference. In addition, in addition to electromagnetic interferen...

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Problems solved by technology

[0003] In addition, in addition to electromagnetic interference, ultraviolet rays are ubiquitous in the environment. At the same time, they will cause damage to the human body and affect material devices. However, most of the electronic device casings on the market are made of plastic, but as we all know, plastic is only an insulating material. It cannot shield electromagnetic effects and ultraviolet rays. Therefore, shielding films are produced on the market to solve these problems. However, the existing production process of shielding films on the market is not perfect enough, and the effect of shielding electromagnetic interference is not good enough.

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