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Conductive shielding silicone gasket

    Our from davanced Nickel-carbon/Graphite,offers exceptional performance.Its primary characteristicsare:

-.Made from advanced Nickel-carbon/Graphite compounds.

-.Achieves ultra-low resistance(≤0.005 ohm) for superior shielding.

-.Available in customized shapes to fit precise application needs.

Graphite

Customized special-shaped conductive silicone rubber

Nickel-carbon 

Aluminum-silver conductive silicone rubber

Nickel-carbon conductive coil

A conductive network is formed by adding conductive particles (silver, silver-coated copper, aluminum-coated silver, glass-coated silver, graphite, nickel-coated, etc.) to create an electrical conduction pathway. This enables the transmission of electrons. The conductivity of different fillers varies significantly:

Pure silver: The lowest resistivity (0.002 Ω·cm) and the best shielding effectiveness (≥100 dB at 10 GHz).

Silver-coated copper: The resistivity is approximately 0.012 Ω·cm and the shielding effectiveness is >80 dB.

Graphite-coated nickel: The resistivity is <0.2 Ω·cm, with high cost-effectiveness, suitable for moderate corrosive environments.

Silver-coated aluminum: Balances conductivity and anti-electrochemical corrosion, lightweight.

2. Factors Affecting Shielding Effectiveness

Mainly reflection loss: High electrical conductivity materials (such as silver) form an opposing electromagnetic field through the movement of free electrons, canceling out interference.

Frequency adaptability: Pure silver fillers maintain >100 dB attenuation at 10 GHz in the high-frequency range, while carbon black is ≤50 dB, suitable for low-frequency scenarios.

The flame-retardant glass fiber board has strong electrical insulation properties. Its color can be customized as light green, yellow, etc., according to the design.

Flame-retardant glass fiber board (usually referring to FR-4 epoxy resin glass fiber board, the most common type) is a fundamental insulating structural material widely used in electronic and electrical, mechanical equipment, construction, transportation, and other fields.

1. Core Performance

1. Flame Retardancy (Core Feature)

Grade: Meets the UL94 V-0 highest flame retardancy standard (thickness ≥ 0.4mm).

Principle: Add flame retardants such as brominated epoxy to the resin matrix. When exposed to fire, it decomposes to absorb heat and cut off oxygen, inhibiting the spread of combustion.

Testing Standards: UL94 (vertical burning), GB/T 2408 (IEC 60695), Glow Wicking Test (GWIT/GWFI).

Performance: Self-extinguishes upon removal of fire source, without molten droplets (avoiding secondary ignition), with low smoke emission.

2. Mechanical Strength

High rigidity & bending strength:** The glass fiber reinforcement significantly enhances hardness and resistance to deformation (bending strength > 300 MPa).

Dimensional stability: Low thermal expansion coefficient (CTE), minimal deformation in wet heat environment (Z-axis CTE approximately 50 ppm/°C).

Impact resistance: Superior to ordinary plastics, but with higher brittleness than metals (avoiding strong impact).

3. Electrical Insulation

High insulation resistance: >10⁹ Ω (normal state)

High dielectric strength: >20 kV/mm (breakdown voltage is high)

Low dielectric constant (Dk) & loss factor (Df):

Common FR-4: Dk ≈ 4.3~4.8 (1GHz), Df ≈ 0.018~0.025

High-frequency FR-4 (such as Taconic/Rogers): Dk ≈ 3.8~4.2, Df < 0.01 (optimized formula)

4. Thermal Properties

Glass transition temperature (Tg):

Common FR-4: Tg ≈ 130°C~140°C

Medium Tg: 150°C~160°C

High Tg: ≥ 170°C (suitable for lead-free soldering)

Heat resistance: Long-term working temperature 105°C~130°C (the higher the Tg, the better the heat resistance).

Heat conductivity: Low (≈0.3 W/mK), requires additional heat dissipation design.

5. Environmental Tolerance

Chemical resistance: Resistant to weak acids, alkalis, organic solvents (avoid strong oxidants).

Moisture resistance: Low moisture absorption rate (<0.1%), but protection is required in long-term wet heat environment (insulation decreases after water absorption).

Weather resistance: Resistant to UV aging (better than plastics), suitable for indoor and outdoor applications.

Flame-retardant foam is a type of porous material with excellent fire resistance properties, widely used in fields such as construction, transportation, electronics, and new energy. Its core performance is not limited to fire resistance but also encompasses multiple functions such as sound insulation, heat insulation, sealing, and buffering.

1. Core Performance

1. Fire Resistance

High-grade certification: Achieve UL94 V-0 level (such as CR foam, nano foam) or GB8624 B1 standard without adding flame retardants, self-extinguish upon removal from fire, no molten droplets during combustion, low smoke emission, and a carbon layer forms on the surface to prevent the spread of flames.

High-temperature resistance: Long-term working temperature range covers -200℃ to 240℃ (nano foam), and short-term can withstand 530℃ high temperature (high flame-retardant fire-resistant foam).

2. Sound Insulation and Absorption

- High porosity (97% - 99%): Three-dimensional grid structure effectively absorbs sound waves, with a sound absorption coefficient NRC of 0.95, far exceeding traditional materials, suitable for acoustic scenarios such as theaters, stadiums, and soundproof rooms.

3. Heat Insulation and Thermal Insulation

- Low thermal conductivity (0.032 W/m·K): Independent bubble structure blocks heat convection and has anti-condensation properties, suitable for refrigerators, air conditioning systems for insulation.

- Ultra-lightweight: Density is only 4 - 12 kg/m³ (nano foam), one-tenth of glass wool, reducing structural load.

4. Environmental Tolerance

- Resistance to chemical corrosion: Anti-oil, acid, alkali, and seawater erosion (CR foam is particularly outstanding).

- Waterproof and moisture-proof: Closed-cell structure has a low water absorption rate (CR foam < 5%), suitable for humid environments.

- Wide temperature range adaptability: Such as silicone foam (-50℃ to 125℃), CR foam (-40℃ to 90℃).

I. Core Performance Advantages

1. Flame Retardancy

Grade: Passed UL94 V-0 certification (1.5mm thickness), self-extinguishing upon removal of the flame (<3 seconds), no molten droplets during combustion, smoke density ≤ 50 (far below the national standard limit).

2. High Temperature Resistance

- Long-term temperature resistance: -60℃ ~ **250℃** (standard model), special formulations (such as ceramicized silicone foam) can withstand up to **800℃** (e.g., TIF-15 model).

- Thermal stability: At 250℃, the permanent deformation rate of compression is ≤ 25%, without brittleness or cracking.

3. Environmental Tolerance

- Weather Resistance: Resistant to UV and ozone (tested by ASTM D1149), outdoor service life > 10 years.

Chemical Resistance: Resistant to weak acids/alkalis, alcohol, and oils (oil resistance is superior to EPDM).

Waterproof Sealing: Closed-cell structure, water absorption rate < 1%, IP68 level protection (compression rate 20%).

4. Mechanical Properties

- High Elastic Recovery: After compression at 50%, the rebound rate is > 90% (better than ordinary foam).

- Anti-compression Creep: Minimal deformation under long-term static load (deformation < 5% at 150℃ for 1000 hours).

- Flexibility: Tensile strength > 0.8 MPa, tear strength > 5 kN/m, suitable for curved surface sealing

   The quality and reliability of these products are validated through established partnerships with global technology leaders. A collaboration would provide access to these proven solutions.