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Round Corner Crystalline Silica Powder

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Round Corner Crystalline Silica Powder is supplied for ceramic, coating, filler and specialty material formulations requiring controlled particle size, purity and morphology.

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Data sheet

ShapeRound-Corner Particle Morphology
Particle Size5-50 μm, or customized
Density2.65 g/cm3
Materialssilicon dioxide, SiO2
AppearanceWhite powder
Purity98%-99.9%

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Round Corner Crystalline Silica Powder Selection Notes

Crystalline silica powder is selected by SiO2 purity, particle size distribution, morphology, moisture, impurity limits, application and packaging.

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FAQ

What should be included in a quote request? Specify SiO2 purity, particle size range, morphology, moisture limit, impurity requirements, quantity and packaging.

Can specifications and packaging be customized? Yes. Share technical requirements, quantity, documentation and packaging needs.

Round Corner Crystalline Silica Powder is produced through a unique rounding treatment to form α-crystalline silica, exhibiting better flowability compared to crystalline silica powder. It can effectively reduce system viscosity, minimize equipment abrasion, and act as a functional filler to dramatically improve the mechanical strength, thermal stability, weatherability, and electrical insulation properties of composite materials. Available in a wide range of purities and particle sizes, HM's Silica Powder meets the highest standards of quality and reliability for demanding applications.

Round Corner Crystalline Silica Powder

Round Corner Crystalline Silica Powder Basic Properties

Item

Unit

Typical Value

Appearance

/

White Powder

Particle Morphology

/

Round Corner

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

Refractive index

/

1.54

Round Corner Crystalline Silica Powder Specifications

Item

Parameter

Specifications

Purity

SiO2 content

98.0-99.9%

Ionic Impurities

Na+, Cl-, etc.

Impurities can be controlled to below 3 ppm.

Particle Size Distribution

D50

D50=5-50µm, or customized.

PSD

Adjustable based on standard profiles to meet specific requirements, including multimodal and narrow distributions.

Surface Properties

Hydrophobicity, Oil Absorption, etc.

Surface modification can be achieved using various functional agents to meet customer requirements.

Round Corner Crystalline Silica Powder SEM

Round Corner Crystalline Silica Powder SEM

Round Corner Crystalline Silica Powder Key Features

  • Unique Particle Morphology: Rounded edges for excellent flowability and ease of processing and mixing.
  • High Chemical Purity: High SiO₂ content with strong chemical inertness, ensuring good compatibility with most matrix materials.
  • Low Ionic Impurities: Strictly controlled metal ion content for high reliability in critical applications.
  • Superior Mechanical Properties: Enhances the hardness, stiffness, and impact resistance of composites as a reinforcing filler.
  • Exceptional Electrical Properties: High insulation resistance, low dielectric constant, and low dissipation factor, making it ideal for electronic encapsulation.
  • High Thermal Stability: Low coefficient of thermal expansion and excellent resistance to thermal shock.

Round Corner Crystalline Silica Powder Applications

  • Electronic Packaging Materials: Used in epoxy molding compounds and underfill for semiconductors. The round corners reduce curing stress and prevent chip cracking, enhancing device reliability.
  • Thermal Interface Materials: Serves as a filler in thermal gels, greases, and pads. It improves thermal conductivity while ensuring electrical insulation, and its good flowability allows for easy application.
  • High-Performance Engineering Plastics: Filled into plastics like PBT and PC used for LED housings and connectors. It enhances thermal conductivity, stiffness, and heat resistance while maintaining good impact strength.
  • Advanced Coatings and Adhesives: Used in wear-resistant, scratch-resistant, and high-temperature coating systems. It improves leveling, prevents settling, and contributes to a smooth surface finish.
  • Precision Casting and Ceramics: Acts as a high-purity filler in advanced ceramics and the face coat of investment casting molds, improving surface quality and dimensional accuracy of castings.

Round Corner Crystalline Silica Powder Packing And Shipping

The Round Corner Crystalline Silica Powder is securely packed in wooden crates or cartons, reinforced with cushioning materials to prevent movement during transit. This packaging approach ensures that the products remain intact and protected throughout the shipping process.

Round Corner Crystalline Silica Powder Packing

Where to Buy Round Corner Crystalline Silica Powder in Bulk?

Heeger Materials Inc., a professional supplier and manufacturer of high-quality Quartz Ceramic products including Round Corner Crystalline Silica Powder, leverages extensive expertise in supply and export to offer competitive prices. We provide customized solutions to meet specific requirements, ensuring exceptional quality and customer satisfaction.

Heeger Materials Inc. was established in 2016 in Colorado, USA. We specialize in premium-grade metals, alloys, ceramics, powders, and other materials catering to research, development, and large-scale industrial production in scientific and industrial sectors. 

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