EMI Shielding Applications of Conductive Silicone Foam in Industrial Communication Equipment

With the rapid adoption of 5G technology, industrial communication equipment faces increasingly stringent requirements for electromagnetic interference (EMI) shielding. Owing to its excellent shielding effectiveness, weather resistance, and sealing capability, conductive silicone foam has become a critical shielding material for enclosures, module interfaces, and base station filters.

1. Why Conductive Silicone Foam?

Industrial communication devices such as routers, switches, and base station filters generate high-frequency electromagnetic waves. Without proper shielding, this can cause:

• Signal interference, leading to unstable data transmission.

• Malfunction or failure of equipment.

• Failure to meet EMC certification standards, limiting market access.

Key advantages of conductive silicone foam:

• High shielding performance: 60–90 dB, suitable for GHz-level frequencies.

• Wide temperature resistance: -50℃ to 200℃.

• Excellent compression resilience: Suitable for complex structures with strict sealing requirements.

• Customizable processing: Supports adhesive backing, die-cutting, and stamping.

2. Typical Applications

• 5G Base Station Filters – Used between cover plates and housings for dual sealing and EMI shielding.

• Industrial Routers & Switches – Prevent EMI intrusion while ensuring waterproof and dustproof protection.

• Industrial Control Cabinets – Door seals and seam shielding to eliminate EMI leakage points.

3. Conductive Silicone Foam vs. Conductive Foam

Conclusion: For industrial communication equipment, conductive silicone foam is preferred due to higher performance and durability.

4. Konlida’s Advantages

Konlida’s conductive silicone foam products are trusted by leading telecom manufacturers, including Huawei, ZTE, and Hikvision.
Core strengths include:

• Multiple coatings (Ag-Cu, Ni-Cu, carbon-based) for different shielding levels.

• Full environmental certifications (RoHS, REACH).

• Custom processing options: adhesive backing, die-cutting, stamping.

• Proven applications across global communication equipment brands.

5. Future Trends

The industry is moving toward eco-friendly and high-performance solutions:

• Low-VOC formulations for safer production environments.

• Recyclable materials to support green manufacturing.

• Advanced coatings (nano-silver, graphene composites) for enhanced shielding.

• Lightweight design to reduce device weight and improve portability.