What is Spherical Quartz SiO2 Powder?

Introduction to Spherical Quartz siO2 Powder

Spherical powder of quartz

Also called:

Spherical silicon powder

Amorphous quartz is an amorphous powder made of quartz. The main ingredient, silica, has individual particles that are round. It’s a white powder with uniform size particles, excellent transparency, chemical and thermal stability, safety and insoluble in water.

Quartz powder in spheres

This is the main use of it for large-scale integrated Circuit Packaging packaging. It’s also useful in the high-tech industries of aerospace, fine chemicals and everyday cosmetics.

The Physicochemical Characteristics of Spherical Quartz SiO2 Pulver

Quartz powder in spheres

Possibilities include a flat surface and large area of specific material.

First, the powder can be mixed with resin easily to create a smooth film. It is easy to add resin, but the quantity of quartz powder used in the mixture is quite large. A mass fraction of up to 90% can be achieved. A higher filling quantity of quartz powder will result in a lower thermal conductivity. Additionally, the thermo expansion coefficient of the plastic sealing materials is smaller. This affects the effectiveness of electronic components.

Spherical powder has a stress level of 60% less than angular powder. Second, plastic sealing material made with spherical Quartz powder contains the lowest stress concentration and highest strength. The integrated circuit chips are protected with plastic packaging material made of spherical quartz powder. This makes it difficult for mechanical damage to occur during transport, installation and usage.

A third advantage is the smooth surface of the spherical dust, which has low friction and wear. The mold’s service life is also extended.

Spherical Quartz SiO2 Powder Properties
Additional 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 in water Unsolvable
Get the exact Mass 59.9668
Spherical siO2

Spherical Quartz SiO2 Pulverization Methods

Flame melting method and plasma heating furnace methods are the most common preparations for sphere quartz powder.


Flame melting method

The basic principle behind ball-forming is that high-temperature torch guns emit 1600-2000 high temperatures of flame. Once the powder enters high-temperature zones, the powder’s angular surface absorbs heat. This heat then moltens it. Finally, the heat is transferred into the powder and the particles become completely molten. Surface tension causes the object to always move to the stable condition, while the spherical form is the best, in order to accomplish the goal of the product ball.


Plasma heating furnace method

Known as hot plasma or local thermodynamic equilibrium plasma. The main features of hot plasma include the temperature at which the electrons (Te), ions (Ti) and gas (Tg in plasma). The thermal plasma category includes arc plasma, highfrequency plasma, induction plasma, and other plasmas.

High-frequency plasma melting is used to make spherical powder of quartz. It uses a moderate temperature range, stability control, high yield, and can attain a higher rate of spheroidization. Similar to the flame melting process, its principle and processes are the same. However, the plasma generator replaces the heat source at high temperatures.


Chemical Synthesis

To make silica gel at a specific temperature, silica sol was first treated with ammonia/ammonium bicarbose. The gel then was treated again with acid to obtain hydrated spherical silicona. Finally, silica was refined and heated-treated to produce spherical powder. This product is low in uranium, and it is very easy to agglomerate.


Hydrolysis is a method

You will add the SiCl4 liquid to deionized water and mix it at constant speed. At the same time, the hydrolysate will be stirred with a quartz rod. After drying, washing, filtering and aging the hydrolysate, it is dehydrated to an even weight using a temperature control box between 100 and 200. It then goes to high-temperature furnace for sintering. You can get high-temperature, crystal shape and dehydroxylation to obtain highly pure spherical quartz particles with the desired size.

Spherical Quartz SiO2 Pulverized for Applications

The quartz powder has a high level of dielectricity, heat resistance, moisture resistance and corrosion resistance. It is also highly fillable and low in cost.

Spherical quartz powder is also widely available in electronics ink, optical fibre, high quality precision ceramic manufacturing and other optical devices. It can also be used as special paint coat fillers.

Major Supplier of Powdered Spherical Quartz SiO2

Nano Technology Co. Ltd., an international supplier of high quality chemicals, is trusted to provide Nanomaterials and super-high-quality chemicals.

High-quality products are what you want

Powdered SiO2 from spherical Quartz

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