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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 spherical, amorphous material. The main ingredient is silica. It is white in color, with uniform particle sizes, good transparency and chemical stability.
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.

Spherical Quartz SiO2 powder – Physicochemical properties
Quartz powder in spheres This product has the benefits of 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. The yield of the integrated circuit chip when it’s encapsulated in spherical-powder plastic packing material is high. This makes it 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
CAS 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 synthesizer method are the most common methods of making sphere quartz powder.
1. 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 product’s purpose.
2. Plasma heating furnace method : Hot plasma (also known as local thermodynamic balance plasma) is characterized by the presence of a local electron (Te), an ion (Ti), or a gas (Tg). These features are nearly identical. 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 plasma generator is switched from a high-temperature heat source.
3. 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 heat-treated in order to obtain spherical, silica powder. It has low uranium and is easy for people to agglomerate.
4. Hydrolysis is a method : Add the liquid SiCl4 and deionized water with various dispersants to the hydrolysate at a constant speed. Then stir the hydrolysate 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 as a substrate or packaging material in large-scale and very large-scale integrated Circuits.
Spherical quartz powder is also widely used in electronic equipment, high grade cosmetics and high-grade precision ceramic manufacture, as well as in special paint coating fillers.

Main supplier of Spherical Quartz SiO2 Pulver
Technology Co. Ltd. is a trusted global supplier and manufacturer of chemicals and nanomaterials. They have over 12 years experience in producing super high-quality chemicals.
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