Rigid Graphite Felt for Insulation

Rigid Graphite Felt for Insulation

Graphite felt is a unique and versatile material that has impressive properties that make it highly sought after. It is made from processed natural graphite that is woven into a felt-like consistency, marked by its excellent thermal stability, electrical conductivity, chemical stability, and mechanical durability. Graphite felt is widely used in various fields and industries, including chemical processing, high-temperature insulation, aerospace, and energy storage applications. Due to its high melting point, fire resistance, and excellent thermal insulation properties, graphite felt plays a crucial role in preventing accidents caused by high-temperature processes. Moreover, its excellent electrical conductivity makes it an ideal choice for applications such as electrodes for fuel cells and energy storage devices. With its continued evolution and diversification in use, graphite felt has indeed proven itself to be an indispensable material in modern industry.

Applications of Carbon Graphite Felt Insulation Lining Materials:

  • Vacuum furnaces
  • Inert gas furnaces
  • Heat treatment furnaces (like hardening, carbonization and brazing etc.)
  • Hard alloys production
  • Sintering applications
  • Specialty ceramics production, like production of boron nitride, boron carbide, silicon cabride products etc.
  • CVD/PVD Coating

Advantages of Zibo Gotrays Carbon Graphite Felt

  • High temperature resistance: Up to 2300 ℃ heat treatment enables Zibo Gotrays’ graphite felt withstand high temperature without slags falling off for long lifespan.
  • Superior insulation performance
  • High purity. Normal ash content of Zibo Gotrays’ graphite felt is 500ppm, if higher purity is required by customers, we can do further purification to 10 ppm at best.
  • Custom cut into sizes and shapes like round sleeves, discs etc.
Technical References for Hard Composite Graphite Felt With Protection Layer
GradeGTR-HFP-PAN2500GTR-HFC-PAN2500
MaterialPAN BasedPAN Based
Protection LayerGraphite PaperGraphite Cloth
Bulk Density (g/cc)0.25-0.280.25~0.28
Carbon Content99% min.99% min.
Thermal conductivity)W/Mk0.2-0.3 ((1150℃)0.2-0.3 ((1150℃)
Flexural Strength (Mpa)1.3-3.01.75~3.2
Bending Strength (Mpa)1.0-2.51.5~3.0
Crushing strength ( Mpa)0.4 (at 5% compression)0.7 (at 5% compression)
Ash Content (ppm)200 max200 max
Heat Treatment Temperature (℃)25002500
Plate Standard SizesLength (mm)1000, 1500, 18001000, 1500, 1800
Width (mm)1000, 13001000, 1300
Height (mm)20-25020-250
Tube Standard SizesDiameter (mm)Φ250-1600Φ250-1600
Wall Thickness (mm)30-13030-130
Height (mm)300-3000300-3000
Max Working Temperaturein the air(℃)400400
Vacuum Condition (℃)22002200
Inert Atmosphere (℃)32003200
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