What is Spherical Quartz SiO2 Powder?

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Introduction to Spherical Quartz siO2 Powder

Spherical powder of quartz

Also known as

Spherical silicon powder

Amorphous quartz is a powder of amorphous silica. The individual particles are spherical. It is white in color, with uniform particle sizes, good transparency, thermal stability and safety.

Quartz powder in spheres

It is used to make large-scale integrated circuit packaging. It is also used for high-tech applications such as aerospace, fine chemicals and daily cosmetics.

Physicochemical properties of Spherical Quartz SiO2 powder

Quartz powder in spheres

This product has many benefits, such as a smooth surface and large specific area. It also has stable chemical properties.

First, the spherical powder is fluid and can be stirred with resin to form an even film. The resin can be added in small amounts, but the amount of quartz powder used for filling is substantial. The mass fraction can go up to 90.5%. The more quartz powder added to the mix, the lower its thermal conductivity. Additionally, the less thermal expansion coefficient the plastic sealing material has, the higher the performance of electronic components.

Second, the stress in spherical granules is less than that of angular granules. Also, the stress concentration and strength of plastic sealant made of spherical Quartz powder are the lowest and highest. When the integrated circuit chip has been encapsulated in spherical-powder plastic packing material, it yields a high yield and is very difficult to cause mechanical damage during transportation, installation and use.

Third, because the surface of the powder is smooth, it has a low friction coefficient, wear is minimal and molds can last for more than one time.

Spherical Quartz SiO2 Powder Properties
Other names fused quartz, spherical quartz, spherical SiO2, silica
No. 7631-86-9
Formula compound SiO2
Molecular Weight 60.09
Appearance white powder
Melting Point 1,600deg C (2,912deg F)
Boiling Point 2,230deg C (4,046deg F)
Density 2533kg/m3
Solubility of H2O Insoluble
Exact Mass 59.9668
Spherical Quartz Powder Spherical SiO2

Spherical Quartz SiO2 Pulverization Methods

Flame melting method, plasma heating furnace technique, and chemical synthesis are the most common methods for making spherical powder.


Flame melting method

Ball formation is achieved by using a high temperature flame gun that emits 1600-2000 high temperatures flame. The powder then absorbs heat from the flame and becomes molten. This heat is transferred to the powder inside, which is completely molten. Surface tension causes the object to always move to the stable condition, while the spherical shape is the most stable, in order to accomplish the purpose of the product balls.


Plasma heating furnace method

Hot plasma is also known locally as thermodynamic equilibrium plasma. The plasma’s main features include the temperature of the local electrons (Te), ions (Ti), or gas (Tg). The thermal plasma category includes arc plasma, high-frequency and induction plasma.

High-frequency plasma melting is an efficient method of producing spherical quartz. The method uses moderate temperatures, stable control, high yield, and a high yield to achieve a higher level of spheroidization. Similar to the flame melting method, its principle and procedure are the same. The only difference is that the high temperature heat source is switched to a plasma generator.


Chemical synthesis

: Silica sol emulsion at a specific temperature was treated using ammonia/ammonium bicarbose. The gel was then treated with acid to obtain hydrated, spherical, silica. Finally, the gel was refined and heated-treated to obtain spherical, silica powder to meet customer needs. It has low uranium and is easy for people to agglomerate.


Hydrolysis is a method

: Add the liquid SiCl4 and deionized water with different dipersants at constant speed. The hydrolysate can then be stirred with a quartz rod at high speed. After washing, drying, and filtering, the hydrolysate has been dried, dehydrated to a constant weight in an oven at 100-200 degrees Celsius, and then transferred to the high temperature sintering furnace. High-temperature dehydroxylation at different temperatures can result in high-purity spherical quartz crystal powder.

Spherical Quartz SiO2 Pulverized for Applications

Quartz powder’s superior performance includes high dielectric, heat resistance and moisture resistance. It is also resistant to corrosion. It can be used in large or very large scale integrated circuits as a packaging material and substrate.

Spherical quartz powder is also widely used in electronic and optical ink, optical fibre, high grade precision ceramic manufacturing, electronic devices, electronic components of precision grinder, special paint coatings fillers, and high-grade cosmetics.

Main supplier of Spherical Quartz SiO2 Pulver

Technology Co. Ltd. is a trusted global supplier of chemical material and manufacturer. They have over 12 years experience in producing super high-quality chemicals, Nanomaterials, such as silicon powder.

High-quality products are what you want

Powdered SiO2 from spherical Quartz

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