General Industrial-Grade High-Purity Fused Silica Micro-Powder
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Industrial-grade fused silica micro-powder is an ultra-fine powder material made from high-purity quartz sand through high-temperature melting, cooling, crushing, and precise classification. It has the characteristics of high purity, low coefficient of thermal expansion, excellent insulation, chemical stability, and high-temperature resistance, and is widely used in fields such as electronic packaging, composite materials, coatings, and ceramics.
Product Overview: Industrial-grade fused silica micro-powder is an ultra-fine powder material made from high-purity quartz sand through high-temperature melting, cooling, crushing, and precise classification. It has the characteristics of high purity, low coefficient of thermal expansion, excellent insulation, chemical stability, and high-temperature resistance, and is widely used in fields such as electronic packaging, composite materials, coatings, and ceramics.
Product Features: High Purity: The SiO2 content is ≥ 99%, and the impurity content is extremely low, ensuring product stability. Ultra-fine Particle Size: The D50 particle size is adjustable (the typical range is 0.5-50μm), with a uniform distribution and good fluidity. High-temperature Resistance: The melting point is ≥ 1700ºC, and it has strong resistance to thermal shock. Chemical Inertness: Resistant to acid and alkali corrosion, insoluble in water and organic solvents . Electrical Insulation: The dielectric constant is low (3.5-4.0). High Hardness: The Mohs hardness is 6, which can improve the wear resistance of composite materials.
Application Fields: Electronic Materials: Filling materials for epoxy resin packaging materials, copper-clad laminates, and silicone bonding agents. Coatings/Adhesives: Improves wear resistance, weather resistance, and leveling property. Ceramics/Refractory Materials: Reduces the sintering temperature and improves density. Plastics/Rubbers: Enhances mechanical properties and improves thermal conductivity and insulation. Precision Casting: Used as a coating for the surface layer of investment casting to improve surface finish.
Packaging and Storage: Packaging: 25kg/bag (customizable packaging is available). Storage: Store in a cool and dry place, avoiding a humid, high-temperature, and acid-base environment.
Precautions Wear a dust mask during use to avoid inhaling dust. Fully mix with materials such as resins to eliminate air bubbles. Remarks: The above parameters are general examples, and specific indicators need to be customized according to customer requirements. If you need more detailed technical information or sample testing, please contact us!
Project
Unit
Typical values
Appearance
/
White powder
Density
kg/m3
2.59×103
Mohs hardness
/
five
Dielectric constant
/
5.0（1MHz）
Dielectric loss
/
0.003（1MHz）
Linear expansion coefficient
1/K
3.8×10-6
Soft composite silicon micro powder can be classified into specifications and matched according to customer requirements based on the following characteristics:
Project
Related indicators
Explain
Chemical Composition
SiO2 content, etc
Having a stable chemical composition to ensure consistent performance
Ion Impurity
Na+, Cl -, etc
Can be as low as 5ppm or below
Particle Size Distribution
D50
D50=0.5-10 µ m optional
Particle size distribution
Adjustments can be made based on typical distributions as required, including multimodal distributions, narrow distributions, etc
Surface Characteristics
Hydrophobicity, oil absorption value, etc
Different functional treatment agents can be selected according to customer requirements
Product Overview: Industrial-grade fused silica micro-powder is an ultra-fine powder material made from high-purity quartz sand through high-temperature melting, cooling, crushing, and precise classification. It has the characteristics of high purity, low coefficient of thermal expansion, excellent insulation, chemical stability, and high-temperature resistance, and is widely used in fields such as electronic packaging, composite materials, coatings, and ceramics.
Product Features: High Purity: The SiO2 content is ≥ 99%, and the impurity content is extremely low, ensuring product stability. Ultra-fine Particle Size: The D50 particle size is adjustable (the typical range is 0.5-50μm), with a uniform distribution and good fluidity. High-temperature Resistance: The melting point is ≥ 1700ºC, and it has strong resistance to thermal shock. Chemical Inertness: Resistant to acid and alkali corrosion, insoluble in water and organic solvents . Electrical Insulation: The dielectric constant is low (3.5-4.0). High Hardness: The Mohs hardness is 6, which can improve the wear resistance of composite materials.
Application Fields: Electronic Materials: Filling materials for epoxy resin packaging materials, copper-clad laminates, and silicone bonding agents. Coatings/Adhesives: Improves wear resistance, weather resistance, and leveling property. Ceramics/Refractory Materials: Reduces the sintering temperature and improves density. Plastics/Rubbers: Enhances mechanical properties and improves thermal conductivity and insulation. Precision Casting: Used as a coating for the surface layer of investment casting to improve surface finish.
Packaging and Storage: Packaging: 25kg/bag (customizable packaging is available). Storage: Store in a cool and dry place, avoiding a humid, high-temperature, and acid-base environment.
Precautions Wear a dust mask during use to avoid inhaling dust. Fully mix with materials such as resins to eliminate air bubbles. Remarks: The above parameters are general examples, and specific indicators need to be customized according to customer requirements. If you need more detailed technical information or sample testing, please contact us!
Project
Unit
Typical values
Appearance
/
White powder
Density
kg/m3
2.59×103
Mohs hardness
/
five
Dielectric constant
/
5.0（1MHz）
Dielectric loss
/
0.003（1MHz）
Linear expansion coefficient
1/K
3.8×10-6
Soft composite silicon micro powder can be classified into specifications and matched according to customer requirements based on the following characteristics:
Project
Related indicators
Explain
Chemical Composition
SiO2 content, etc
Having a stable chemical composition to ensure consistent performance
Ion Impurity
Na+, Cl -, etc
Can be as low as 5ppm or below
Particle Size Distribution
D50
D50=0.5-10 µ m optional
Particle size distribution
Adjustments can be made based on typical distributions as required, including multimodal distributions, narrow distributions, etc
Surface Characteristics
Hydrophobicity, oil absorption value, etc
Different functional treatment agents can be selected according to customer requirements
