Flexible Purified Graphite Felt – 3mm Roll for Hot-Zone Insulation

Product Summary

This semiconductor soft felt is a flexible purified graphite insulation felt roll with a standard thickness of 3mm (±10%). Designed for high-vacuum hot-zone thermal insulation, it meets the demanding requirements of silicon and silicon carbide crystal growth processes. With a carbon content ≥99.99%, tensile strength of 0.12–0.25 MPa, and moisture absorption under 1.0%, it delivers reliable performance in extreme thermal environments.

Key Selling Points

• Ultra-High Purity: Carbon content ≥99.99% minimizes contamination in sensitive crystal growth processes.
• Precise Thickness: 3mm (±10%) uniformity ensures consistent thermal insulation performance across the hot zone.
• Low Moisture Absorption: <1.0% after purification prevents outgassing and thermal conductivity variations.
• Flexible Structure: Carbon fiber composite material allows easy wrapping and fitting around complex heater boundaries.
• Proven Application: Tailored for silicon/silicon carbide crystal growth furnaces, with low thermal conductivity (0.08–0.14 W/m·K at 1150°C).

Technical Specifications

Models and Options

Standard roll thickness: 3mm. Other thicknesses (5mm, 10mm) available upon request, all within ±10% uniformity.

Materials and Structure

Made from high-purity carbon fiber composite, this flexible felt provides a soft, conformable structure that can be easily cut and wrapped. Its high carbon content ensures purity, while the fiber matrix delivers mechanical strength and thermal insulation.

Applications

• Silicon / silicon carbide crystal growth process
• High-vacuum flexible hot-zone thermal insulation
• Hot-zone systems of Single Crystal Furnaces
• Flexible hot-zone wrapping insulation blanket for structural heaters

Customization

Thickness can be customized to 5mm or 10mm. Rolls can be cut to specific dimensions for your furnace hot-zone design.

FAQ

Inquiry Information

For more details or to request a quote, please contact us:

Email: sales05@semi-cera.com
Phone/WhatsApp: +86 15957878134