Key Materials & Heat Treatment Processes
- Carbon Nanotubes (CNTs) & VGCF
Pre-Treatment: Purification to remove metal catalysts (Fe, Co, Ni).
Graphitization:
Temperature: 2500–3000℃ (optimizes tube alignment and conductivity).
Atmosphere: High-purity argon to prevent oxidation.
Equipment: Cxinduction™ Ultra-High-Temperature Graphitization Furnace with:
Induction heating for uniform CNT treatment.
Accurate temperature control to minimize defects.
- Biomass-Derived Carbon
Carbonization: First step at 600–1000℃ to create porous carbon.
Graphitization:
Temperature: 2800–3000℃ (precise temperature ramping converts amorphous carbon into graphite-like structures).
- Premium Carbon Black
Graphitization:
Temperature: 2500–2800℃ (enhances conductivity for battery anodes).
Key Parameter: Controlled heating rate (<10℃/min) to avoid aggregation.
Why Cxinduction’s Graphitization Furnaces?
- Unrivaled Temperature Control
±5℃ uniformity across the entire hot zone.
Can reach up to 3000℃
with minimal energy loss (20% more efficient than competitors).
- Advanced Atmosphere Management
Vacuum (under 2200) or ultra-pure inert gas (Ar, N₂) to prevent contamination.
Real-time gas monitoring for process consistency.
- Robust Design for Harsh Conditions
Graphite heating elements withstand extreme temperatures.
Modular insulation reduces maintenance downtime.
- Smart Automation
PLC-controlled heating profiles for different carbon materials.
Critical Process Considerations
- Material Preparation
CNTs/VGCF: Ensure catalyst residues are <50 ppm.
Biomass char: Pre-sieving to homogenize particle size.
- Temperature Ramping
Slow heating (<5℃/min) for biomass to avoid cracking.
Fast ramp-up (20℃/min) for CNTs to preserve structure.
- Contamination Prevention
Oxygen levels <1 ppm during graphitization.
Regular furnace cleaning to avoid cross-material contamination.
- Post-Treatment Handling
CNTs: Store in dry N₂to prevent oxidation.
Carbon black: Anti-static packaging to avoid agglomeration.
Applications of Heat-Treated Materials
- Energy Storage
CNTs: Conductive additives in Li-ion batteries (5–10% capacity increase).
Graphitized carbon black: Anode materials for fast-charging EVs.
- Aerospace & Composites
VGCF: Reinforcements in CFRP (20% lighter than steel).
Biomass carbon: Lightweight thermal insulation for satellites.
- Industrial Materials
CNT-enhanced polymers: EMI shielding for 5G electronics.
Graphitized carbon black: High-end tire additives (lower rolling resistance);Battery additives– Enhances conductivity in Li-ion anodes/cathodes.
- Environmental Tech
Biomass-derived carbons: Supercapacitors for renewable energy storage.
CNT filters: Heavy metal removal from wastewater.
Success Stories
Cxinduction’s furnaces are trusted by:
Top-tier battery manufacturers for CNT-treated anodes.
Aerospace material suppliers for VGCF/CFC composites.
Sustainable tech startups processing biomass carbon.
Documented Results:
✔ 15% higher conductivity in graphitized CNTs vs. conventional methods.
✔ 30% faster processing with furnace designs.
✔ Near-zero scrap rates due to precision temperature control.
Conclusion
From CNTs to biomass char, the performance of advanced carbon materials hinges on ultra-high-temperature graphitization. Cxinduction’s furnaces provide the perfect synergy of precision, efficiency, and scalability, empowering innovators across industries.
