Product Main

Specifications

Qmin-SIL Series Fused Silica is made of highest purity Chinese crystal Silica by electrically fusing (fusing temperature 1800-2000℃)to amorophos Silicon dioxide , then specially engineered ingots, granular and flour form designed for different usage. This product has a very low thermal conductivity and excellent thermal shock resistance.
 
　　Special Features:
  • Near zero thermal expansion coefficient
  • Excellent thermal shock resistance
  • Pure(high SiO2 content,low Iron, Potassium & Sodium Oxide)
  • Consistent Chemistry
  • Statistically controlled particle size distribution
   
　　Main Applications:
  • EMC (Epoxy Molding Compound)
  • Investment Casting ,shell mould product
  • Refractory & Ceramic materials
  • Paint
  • Others
 
　　Chemical Composition:  
Item
Ingot & Granule
 Powder
SiO2
99.9%
 99.8%
AL2O3
40ppm
 500ppm
Fe2O3
40ppm
 50ppm
Na2O
40ppm
 50ppm
K2O
40ppm
 50ppm

　　Physical Properties:
  • Appearance: Transparent Ingots, Granule or White Powder
  • Specific Gravity: 2.21
  • Hardness( Mohs): 7.0
  • PH: 5-7
  • Whiteness: 95Min.
　　Size Available: (Ingot, Granules and powder):

　　(1) 3-10mm, 10-50mm, 8-5mm, 5-3mm, 3-1mm, 1-0.5mm, 1-0.2mm,0-0.5mm, 0.5-0.2mm,
　　　　0.5-0.1mm, 0.2-0.1mm, 0.5-1mm.
　　(2) -4+10mesh, -10+20mesh, -20+50mesh, -30+50mesh,-50+100mesh, -120F,
　　　　-200F, -325F, -400F, -600F.