| Item |
Unit |
Typical Value |
| Appearance |
/ |
White powder |
| Density |
kg/m3 |
2.65×103 |
| Mohs Hardness |
/ |
7 |
| Dielectric Constant |
/ |
4.65(1MHz) |
| Dielectric Loss |
/ |
0.0018(1MHz) |
| Coefficient of Linear Expansion |
1/K |
14×10-6 |
| Thermal Conductivity |
W/K·m |
12.6 |
| Refraction Coefficient |
/ |
1.54 |
Crystalline silica powder can be sorted on basis of following characteristics and prepared as required by customers:
| Item |
Index of Correction |
Introduction |
| Purity |
SiO2content |
Available within 98.0-99.9% |
| Ion impurity |
Na+,Cl-,etc |
Can be reduced below 3ppm |
| Particle size distribution |
D50 |
Available within D50=0.5-50µm |
| Particle size distribution |
May be adjusted on basis of typical distribution as needed, including multimodal distribution and narrow-range distribution. |
| Appearance characteristics |
Whiteness and transparency |
Whiteness is within 60-98, high-transparency product is available. |
| Surface characteristics |
Hydrophobicity and oil absorption |
Treatment agent of different functions may be selected as needed by customer |
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