Flexible Conductive Technology Innovation Expands Multi-Scenario Electromagnetic Shielding Applications

The popularization of flexible electronic devices has put forward dual requirements of "flexible adaptation + efficient protection" for electromagnetic shielding materials. With excellent flexibility and processability, conductive fabric is occupying more market share through technological innovation. Traditional conductive fabric has problems such as easy wear of conductive layers and decreased shielding effectiveness after bending. The new generation of products has achieved performance breakthroughs through dual upgrades of materials and processes.​

The core upgrades in the production and manufacturing process are reflected in base fabric selection and conductive coating technology. High-strength polyester fiber or nylon fiber is selected as the base fabric, which is made into high-density plain or twill fabric through textile technology to improve the tensile strength and wear resistance of the fabric, with a breaking strength of more than 500N/5cm; the conductive treatment adopts a composite process of "electroless silver plating + anti-oxidation coating". First, a uniform silver layer is formed on the fiber surface through electroless plating, and the thickness of the silver layer is controlled at 0.1-0.3μm to ensure high conductivity and shielding effectiveness. Then, an ultra-thin anti-oxidation film is covered through vacuum spraying technology to effectively prevent oxidation and discoloration of the silver layer and extend the service life of the product. In addition, laser cutting and die-cutting processes are introduced in the production process to achieve precise processing of complex shapes, adapting to various special-shaped equipment structures.​

In terms of performance characteristics, the upgraded conductive fabric has three advantages: "high flexibility, high shielding effectiveness, and high durability". It can be repeatedly bent 180 degrees (more than 1000 times) without damage, and the shielding effectiveness attenuation after bending is less than 5%, which can closely fit complex structures such as curved surfaces and folds; in the frequency range of 100MHz-3GHz, the shielding effectiveness can reach 70-90dB, which can effectively block electromagnetic interference; the surface resistance is as low as 0.01-0.1Ω/sq, the conductive performance is uniform and stable, and it also has good thermal conductivity, which can assist in equipment heat dissipation.​

Application fields widely cover flexible electronics and traditional electronic scenarios: in flexible displays and foldable mobile phones, it is used for electromagnetic shielding and signal isolation inside the fuselage; in wearable devices, such as smart watches and bracelets, it adapts to the human body curve, realizing electromagnetic protection while ensuring wearing comfort; in the aerospace field, it is used for flexible cables inside spacecraft and electromagnetic sealing of instruments and equipment; in addition, it is applied to automotive flexible circuits, industrial robot cables and other scenarios, providing reliable electromagnetic protection for various flexible structures.​

In the future, conductive fabric will further explore the compounding of new conductive materials and base fabrics, such as graphene-modified conductive coatings and carbon fiber base fabrics, to improve shielding effectiveness and environmental adaptability. At the same time, it will develop ultra-thin and ultra-light products to meet the development trend of lightweight and miniaturization of electronic devices, and continuously expand the application boundaries in flexible electronics, new energy and other fields.