Wet-Process Vacuum-Formed Cured Felt (PAN-Based, Pitch-Based, Viscose-Based)
- Product Description
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It features well‑aligned fibers, strong self‑supporting capability, excellent high‑temperature thermal insulation, and easy installation and handling. Primarily manufactured from PAN‑based, pitch‑based, or viscose‑based short fibers, it is used in high‑temperature thermal equipment such as single‑crystal silicon pulling furnaces and SiC crystal growth furnaces.
Technical Index Reference value P A N base Asphalt-based Viscose-based Density (g/cm3) 0.18-0.22 0.16-0.18 0.16-0.20 Carbon content (%) ≥99 ≥99 ≥99 Thermal conductivity (W/m·K) ≤0.35 ≤0.32 ≤0.30 Ash content (ppm) ≤ 50/20 ≤ 50/20 ≤ 50/20 Tensile strength (MPa) ≥ 0.8 ≥ 0.6 ≥ 0.5 Bending strength (MPa) ≥ 1.0 ≥ 0.6 ≥ 0.4 Treatment temperature （℃） ≥2300 ≥2300 ≥2300 Special Requirements Graphite coating, patches/stickers, purification
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