What is Spherical Quartz Powder?

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What is it?

Spherical Quartz Powder

After purification and ultra-fine milling, spherical quartz powder is made out of natural quartz stones. It is then subject to high temperatures and its phase, crystal forms and shape change instantly, from solid state into molten state and then back to solid state. Amorphous powder is made from irregularly angular particles and transformed into regular spherical grains.

The key features of

Spherical Quartz Powder

Spherical quartz powder offers the benefits of a smooth surface and large specific area. It also has high chemical stability. The first is that the spherical material has good fluidity. It can also be mixed with resin evenly to form a film. The greater the amount of quartz powder used to fill the mold, the lower its thermal conductivity. Also, the molding compound’s thermal expansion coefficient will be smaller. Additionally, single crystal silicon has a higher thermal expansion coefficient. This will improve the performance of electronic components. Second, the stress in spherical powder is less than half that of angular powder. Furthermore, the molding compound made with spherical Quartz powder has the lowest stress concentration, and the strongest. The surface of spherical quartz powder is smooth, with a small friction coefficient and minimal wear to the mold, which can increase the mold’s useful life by more than one-third.

Spherical Quartz Powder Spherical SiO2 Properties

Other Titles
Fused quartz, spherial quartz, spherical SiO2, silica


Combination Formula

Molecular Weight

Powder White

Melting Point
1,600deg C (2,912deg F)

Solubility of in water

2533 kg/m3


Particle size

Boling Point
2,230deg C (4,046deg F)

Specific heat

Thermal Conductivity

Thermal Expansion

Young’s Modulus

59.9668 g/mol

59.967 D

Spherical Quartz Powder Spherical SiO2

Spherical Quartz powder’s uses

Spherical quartz powder can be used in many different applications. Electronic packaging is one of the most popular uses. Electronic packaging is an industry that supports integrated circuits. As integrated circuits become more sophisticated, the requirements for packaging materials are rising. Packaging forms are continually optimized and up-dated to meet these new requirements. The main materials for electronic packaging include substrate material, plastic packing material, lead frame, and solder. Plastic packaging is a low-cost and easy-to-make product that can be mass produced in large quantities. This has helped it grow rapidly. Plastic packaging is responsible for 95% worldwide integrated circuit market. %above. EMC is the main plastic encapsulant. It houses more than 95% microelectronic component.

1. Microelectronic packaging must be able to withstand high levels of moisture, stress, low alpha-rays, dip soldering, reflow soldering, and plastic sealing. To address this issue, epoxy molding compounds must be doped in the resin matrix with inorganic materials. Most of the inorganic materials currently used are quartz micropowder, or silicon micropowder. Large-scale and ultra-large scale integrated circuits now have more stringent requirements for packaging materials due to their rapid growth. Quartz powder, an important support material for EMC requires that its particle size be within the required packaging range. Additionally, it must be pure. High and low radioactive elements are essential for particle shape. Spheroidization requirements apply to quartz powder.

2. Spherical silicon nanopowder has a great shape and can also meet many technical requirements for high-end integrated circuits. Its use can significantly reduce the thermal expansion coefficient and dielectric constant of plastic sealing materials. Also, it has a great rigidity, wear resistance. Weather resistance, impact resistance. Tensile resistance. Moisture resistance. UV radiation resistance. Spherical quartz can be used not only in electronic packaging, but also in high-end cosmetics, electronic inks and precision ceramics.

The main supplier of

Spherical Quartz Powder

Tech Co., Ltd. () is a professional

oxide powder

Over 12 years’ experience in chemical product development and research. We accept credit cards, T/T and West Union payments. We will ship goods overseas via FedEx, DHL and by air or sea to our customers.

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