Benefits of Using Ultra-Fine Kaolin Powder in Fiberglass Production

Benefits of Using Ultra-Fine Kaolin Powder in Fiberglass Production

Introduction

Ultra-fine kaolin powder has become a critical additive in modern fiberglass production, offering significant improvements in mechanical properties, thermal stability, and cost efficiency. This article explores the technical advantages of incorporating high-purity kaolin powders processed with advanced milling technology.

SEM image of ultra-fine kaolin particles

1. Enhanced Mechanical Performance

When kaolin powder with D97≤5μm is uniformly dispersed in fiberglass matrices:

Property Improvement Mechanism
Tensile Strength +15-25% Nanoscale particle reinforcement
Impact Resistance +30-40% Crack deflection at particle interfaces
2. Thermal Stability Advantages

Our SCM Ultrafine Mill produces kaolin powders with exceptional heat resistance:

  • Withstands temperatures up to 1,750°C without phase change
  • Reduces thermal expansion coefficient by 18-22%
  • Maintains dimensional stability under cyclic thermal loads

DSC/TGA curves of kaolin-enhanced fiberglass

3. Production Efficiency Gains

The MTW Series Trapezium Mill enables cost-effective kaolin processing:

  • 30% lower energy consumption vs conventional mills
  • Precise particle size control (325-2500 mesh adjustable)
  • Integrated dust collection system ensures <10mg/m³ emissions
4. Technical Specifications Comparison
Parameter Standard Kaolin Ultra-Fine Kaolin
Median Particle Size 10-15μm 1.2-2.5μm
Specific Surface Area 12-18 m²/g 28-35 m²/g
Fiberglass Flexural Modulus 24 GPa 31 GPa
5. Recommended Equipment Solutions

For fiberglass-grade kaolin production, we recommend:

SCM Ultrafine Mill (45-5μm)
  • Output: 325-2500 mesh (D97≤5μm)
  • Capacity: 0.5-25 ton/h
  • Key Advantage: Vertical turbine classifier ensures zero coarse particles
MTW Series Trapezium Mill
  • Output: 30-325 mesh (adjustable)
  • Capacity: 3-45 ton/h
  • Key Advantage: Curved air channel design reduces energy loss

Kaolin powder production line with SCM mill

Conclusion

Ultra-fine kaolin powder processed through advanced milling systems delivers transformative benefits for fiberglass manufacturers. Our SCM and MTW series mills provide the precision and efficiency required for high-performance composite materials.