Black electromagnetic shielding fabric and preparation method thereof

Abstract

The invention provides a black electromagnetic shielding fabric and a preparation method thereof. The preparation method comprises coating an electromagnetic shielding fabric with black paint and drying the paint at a temperature of 130 DEG C to obtain the black electromagnetic shielding fabric with a black coating, wherein the black paint contains a mixture of epoxy resin and polyimide resin, a curing agent and color paste. The surface of the electromagnetic shielding fabric is coated with epoxy resin and PI resin as paint so that a very thin and compact black coating is formed on the surface and thus the fabric has the advantages of the two types of resins. The resistance and thickness of the fabric basically are not changed, wear resistance, corrosion resistance and light absorption properties of the fabric are greatly improved and excellent electromagnetic shielding performances are obtained. The black electromagnetic shielding fabric has good decoration, taking, protection, delustring, shading, heat absorption and heat radiation performances and can be widely used for conductive clothes and adhesive tapes, conductive woven clothes, conductive non-woven fabrics and shielding liners.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic shielding fabrics, in particular to a black electromagnetic shielding fabric and a preparation method thereof. Background technique [0002] With the rapid development of today's society, especially the rapid development of the electronics industry, people are basically exposed to electromagnetic waves in their lives and work, so the development and research of electromagnetic shielding fabrics is very important. At present, electromagnetic shielding fabrics mainly rely on imports, and domestic independent research and development of electromagnetic shielding fabrics is necessary and has broad development prospects. Electromagnetic shielding fabrics are widely used. In daily life, electromagnetic shielding fabrics can be made into aprons for pregnant women, microwave oven covers for housewives, etc.; they can also be sewn into protective clothing, gloves and hats for those who work in fron...

AI Technical Summary

Problems solved by technology

[0004] Although chemical copper plating and nickel plating can reduce the surface resistance value of the fabric and improve the electromagnetic shielding effectiveness of the fabric, the electromagnetic shielding fabric made by this method still has the following disadvantages: the corrosion resistance and friction resistance of the electromagnetic shielding fabric are not satisfactory ; The shading performance of electromagnetic shielding fabric is not good, and the light is easy to pass through when it is used in light-emitting electrical components, which affects the appearance and use

With the development of science and technology, due to the shortcomings of ordinary electromagnetic shielding materials, such as poor light absorption performance, friction resistance and corrosion resistance, it is difficult to meet more and higher requirements of the market.

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