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fused silica powder for Epoxy Molding Comound
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Fused silica powder
Fused silica is made of high purity crystal silica by electrically fusing (fusing temperature 1800-2000℃) to amorphous Silicon dioxide, then it is classed to different grades by manual and then specially engineered to powder by ball mill.
Applications:
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Filler of epoxy molding compound
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Filler of epoxy potting compound
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Filler of silicon rubber
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Filler of functional coating
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Filler of fusion bonded epoxy powder coating
Main Characteristic:
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lower linear expansion coefficient
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lower tension & lower radiation
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it is environmentally, no harm to workers and environment
Typical Physical Properties
| Color and particle shape | White/ angular |
| Hardness | 7Mohs |
| True Specific Gravity | 2.2g/cm3 |
| Softening poing | approx.1650℃ |
| Melting point | approx.1750℃ |
| Bulk Density | 0.9-1.1mt/m3 |
| Dielectric Constant | 3.8(1MHz) |
| Thermal Conductivity | 1.3w/m·k |
| Coefficient of thermal expansion | 0.5*10-6 |
Chemical Composition:
| SiO2 | Al2O3 | Fe2O3 | Na+ | Cl- | PH | Magnetic material |
| >99.9% | <1800ppm | <30ppm | <3ppm | <3ppm | 5-7 | <15ppm |
Particle size:
| Laser particle size(D50) | 19-21μm | 15-17μm | 9-11μm | 4-6μm |
Other size are available if required.
Package: in Paper bag or plastic woven bag of 25kg net each,then packed on pallet.
in big bag of 1-1.2MT net each.
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