As the society enters the information age, electromagnetic wave radiation can be described as ubiquitous, and in some scenes it will even bring many serious effects. In the aviation field, flights may not be able to take off due to electromagnetic interference; in the hospital scenario, mobile phones may interfere with the normal operation of electronic diagnosis and treatment equipment. Therefore, in order to solve the problem of electromagnetic pollution, people have produced absorbing materials.

The absorbing material is a kind of magnetic functional material with high magnetic permeability. It is usually made by filling some absorbents uniformly on the polymer material and making it through a special process. In the field of RFID/NFC, absorbing materials have been widely used in order to solve the problem of metal interference in the signal reading process.

In practical applications, RFID tags are often used in a metal environment. When the RFID tag is close to metal, since the metal has strong reflectivity to electromagnetic waves, it is often accompanied by signal weakening. Therefore, the general solution is to stick a layer of absorbing material on the back of the RFID tag.

In recent years, with the increasing popularity of NFC applications, especially in smart phone NFC payment scenarios, the use of absorbing materials can bring great benefits to the anti-metal interference of NFC payments, and solve the problem of reading when NFC payment terminals encounter metal. Take insensitivity, failure and other issues.

With the continuous development of the times, the international standards for electromagnetic interference control are becoming more and more stringent, and the country is also strengthening this aspect of governance. Generally speaking, under the premise of increasing frequency of use, absorbing materials will develop in terms of thin thickness, high performance, and light weight.