Scale and application of EMI shielding materials

With the rapid development of electronic technology, EMI shielding has become increasingly prominent in modern industry. From consumer electronics to high-end manufacturing industries such as automobiles and aerospace, the demand for electromagnetic interference shielding continues to grow, driving the continuous evolution and development of the electromagnetic shielding material industry. Electromagnetic interference shielding materials are mainly used to prevent mutual interference between electrical equipment and ensure the normal operation of equipment. These materials achieve shielding effects by absorbing or reflecting electromagnetic waves. According to different application scenarios and technical requirements, common EMI shielding materials on the market include but are not limited to conductive coatings, conductive elastomer gasket 、conductive rubber, absorbing materials, etc.

Analysis of the current status of electromagnetic shielding materials industry

Market size

In recent years, the global electromagnetic shielding material market has continued to grow. According to data, the market size was US$6 billion in 2016 and expanded to US$8 billion in 2021, with a compound annual growth rate of 7.46%. In 2023, the global electromagnetic shielding material market reached US$9.25 billion and is expected to grow at an annual rate of 10% in the next five years.

With the continuous development of domestic consumer electronics and the rapid development of emerging fields such as 5G, the domestic market has also shown a strong growth momentum. The market size has increased from 19.007 billion yuan in 2019 to 26.813 billion yuan in 2023, a year-on-year increase of 9.2%. It is expected to maintain sustained growth in the next few years.

Taking electromagnetic shielding film as an example, according to a research data released by CITIC Securities in 2021, the global electromagnetic shielding film market size is expected to reach 3.15 billion yuan in 2025, of which the Chinese market size will reach 2.16 billion yuan.

Technical level

From a technical perspective, with the development of society and progress, the size of electronic devices in smart products is getting smaller and smaller, and the integration and operating frequency are getting higher and higher. Under this miniaturized configuration, the heat and electromagnetic interference problems in the operation of electronic devices have received widespread attention. Although traditional EMI shielding materials such as metal foil and conductive rubber still occupy a certain market share, new materials continue to emerge and gradually gain favor.

The design and development of new composite materials have shown great advantages in the field of electromagnetic shielding. They have the characteristics of high shielding effectiveness, light weight, good flexibility, thermal conductivity, wave absorption, etc., which meet the needs of electronic equipment for multiple performance. For example, nanomaterials have shown great potential in the field of electromagnetic shielding due to their unique electrical properties. Some nano-metal composite materials can reduce the weight of materials while achieving high shielding effectiveness, meeting the needs of weight-sensitive industries such as aerospace. At the same time, graphene-based materials have also become a research hotspot due to their excellent conductivity and flexibility. Some shielding materials composited with graphene and polymers have begun to explore commercial applications and have advantages in electromagnetic shielding of flexible electronic devices.

Application fields

As a key technology, EMI shielding plays an indispensable role in many fields and has a profound impact on all aspects of modern life and technological development.

In the field of electronic equipment, EMI shielding is crucial from common mobile phones and computers to complex servers. For example, the sophisticated circuit board inside the mobile phone integrates many chips and circuits. The electromagnetic shielding layer can prevent EMI between components, ensure the accuracy and stability of signal transmission, avoid call interruption, data loss and other problems, improve equipment performance and reliability, extend battery life, and make user experience smoother.

In the field of medical equipment, strong magnetic fields and radio frequency pulses are used to obtain internal images of the human body. The electromagnetic shielding facilities around it can prevent external electromagnetic signals from interfering with the imaging process, ensure the clarity and accuracy of the image, help doctors accurately diagnose diseases, and provide strong support for the treatment of patients.

In the field of aerospace, the electronic systems in aircraft and satellites are highly complex and sensitive. EMI shielding technology is applied to avionics equipment cabins, satellite electronic components, etc. to ensure the stable operation of navigation, communication, flight control and other systems in complex electromagnetic environments, avoid flight accidents caused by electromagnetic interference, and ensure flight safety and smooth execution of missions.

In the construction of communication base stations, electromagnetic shielding can reduce the impact of electromagnetic radiation from base stations on the surrounding environment, while preventing external electromagnetic noise from interfering with base station signal transmission, ensuring high-quality coverage of communication networks, meeting people's growing communication needs, and promoting the widespread application and development of modern communication technologies such as 5G.

Electromagnetic shielding also has important applications in the military field, such as missile guidance systems, radar stations, etc. Through shielding technology, the electromagnetic compatibility and confidentiality of military equipment are guaranteed, combat effectiveness and safety are improved, and national security is maintained.

In short, electromagnetic shielding technology, with its unique protection function, is widely used in many fields such as electronics, medical care, aerospace, communications, and military, laying a solid foundation for the efficient operation and scientific and technological progress of modern society, and constantly expanding the boundaries of human exploration of the unknown and pursuit of development.

Summary

The electromagnetic shielding material industry has emerged with the development of electronic technology. The global market size continues to grow, and the domestic market is also showing strong growth. Technically, the advantages of new composite materials are gradually emerging, and there are many patents. It is widely used in many fields such as electronics, medical, aerospace, communications, and military, laying the foundation for the development of modern society and science and technology and continuously promoting its progress.

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