Blown vs. Spun Aluminum Silicate Fiber Cotton

Blown vs. Spun Aluminum Silicate Fiber Cotton

Production Process

• Blown Aluminum Silicate Fiber Cotton:
  • Production Method: Produced by blowing molten aluminum silicate raw materials through a special process using high-speed air or steam jets. The raw materials are first melted in a furnace and then blown into fibers.
  • Fiber Characteristics: Forms fine, short fibers that are randomly oriented. The fibers are relatively uniform in diameter and length.
  • Efficiency: The blowing process is relatively fast and efficient, allowing for high production output.
• Spun Aluminum Silicate Fiber Cotton:
  • Production Method: Made by spinning molten aluminum silicate raw materials using centrifugal force. The raw materials are melted in a furnace and then spun into fibers through a spinning process.
  • Fiber Characteristics: Forms long, continuous fibers that are generally more uniform in length and diameter.
  • Efficiency: The spinning process is also efficient but may have slightly lower output compared to the blowing process.

Physical Properties

• Fiber Length and Diameter:
  • Blown: Typically has shorter fiber lengths and a slightly wider range of fiber diameters.
  • Spun: Features longer, more uniform fibers with a narrower range of diameters.
• Density and Porosity:
  • Blown: Generally has a lower density and higher porosity due to the random orientation of fibers.
  • Spun: Has a slightly higher density and lower porosity as the fibers are more uniformly aligned.

Thermal Performance

• Thermal Conductivity:
  • Blown: Exhibits slightly higher thermal conductivity due to its higher porosity and less uniform fiber structure.
  • Spun: Generally has lower thermal conductivity, making it more effective for thermal insulation.
• Heat Resistance:
  • Both types have good heat resistance, but spun fiber cotton may have a slight edge in maintaining structural integrity at very high temperatures.

Applications

• Blown Aluminum Silicate Fiber Cotton:
  • Commonly used in applications requiring lower density and higher loft, such as loose-fill insulation in buildings and industrial equipment.
• Spun Aluminum Silicate Fiber Cotton:
  • Often used in applications where uniform fiber structure and lower thermal conductivity are critical, such as in the production of insulation blankets, boards, and other pre - formed insulation products.