1. Woven graphite fabrics

All rayon based carbon fabrics are made from raw rayon fabrics

The precursor first must be woven from yarn to fabric, and next step is carbonization and graphitation of fabric

For comparison: PAN-CF is made in the form of tow, and then it is woven from carbon tow to carbon fabric

Main properties of viscose based carbon fiber (graphitized type)

• low modulus (80 GPA, similar to aluminum)
• high heat insulation properties (as fiber has many pores and defects on its surface)
• resistance to thermal load up to 3000 C in inert gas, vacuum, or N2
• resistance to thermal load up to 450 C on air
• chemical resistance level same as graphite
• no melting point
• rayon carbon fiber is electroconductive
• carbon content is 99+%, ash content less than 1%
• carbon cloth is soft, flexible, no skin irritating (reason is low modulus)
• rayon carbon fiber is easy to impregnate with any resin type (epoxy, phenolic, novolac)

GRAPHITE FABRIC PROPERTIES:

Nominal weight:   330 g per sqm   (1200 g per sqm available as well)

Weaving: twill 2/2

Width:   550mm (1000mm avalable)

Thickness: 0.45-0.65mm

Treatment temperature:   2200C (1500C available)

Breaking strength:

Warp min 1000 N/5cm

Weft min 350 N/5cm

Warp (base) yarn count: 98/5cm

Weft yarn count: 70/5cm

Ash content: 0.5%

Roll weight and length: 30-200m/roll, or 3-20kg per roll

Main textile structure is twill 2/2, weight 330 g per sqm, width 500mm

Other types by request

Normally fabric is treated at 2200 C

Application:

• carbon-phenolic composites for solid fuel engines application (ablative material)
• carbon-carbon composites (both ways via phenolic resin carbonization and via chemical vapour deposition process)
• heat insulation for high temperature vacuum funaces (up to 3000 C)
• electrical heating devices incl. wearable clothes

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We also sell another rayon based carbon fiber materials:

Rayon based graphite felts

Rayon based carbon / graphite filament yarns

Rayon based carbon / graphite ribbons