Spherical Quartz Powder

Spherical Quartz Powder Properties And Applications

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Spherical quartz powder It is made by using a carefully selected, irregular-angled, silicon micropowder for the raw material. Then, it is melted into a round shape to produce a silica powder with low stress, good fluidity, and a small specific surface.

Spherical Quartz Powder Properties

Spherical Quartz Powder has excellent properties including a smooth surface and a large surface area. It is also hard, stable, and has a high degree of chemical resistance.
The powder is fluid, and it mixes evenly with the resin. This forms a thin film. The resin content is low, while the quartz powder amount is high. This can result in a mass fraction of up to 90.5%. The more quartz powder that is added to the mold, the less thermal conductivity it has and the less thermal expansion coefficient. The performance of electronic components is improved when they are closer to monocrystalline silicon’s thermal expansion coefficient.

Second, the stress on the spherical crystal powder is 60% less than the stress on the angular quartz powder. And the plastic molding material made of spherical glass powder has the lowest concentration of stress and the greatest strength.

Finaly, the spherical-shaped powder has a smooth and non-abrasive surface with a low coefficient of friction. This can extend the life of molded parts by up to one time.

Applications for Spherical quartz powder

It has many applications. However, its main market is electronic packaging. Electronic packaging is an important industry that supports integrated circuits. The packaging requirements are increasing as integrated circuits get larger and larger.

Microelectronic packaging requires a high level of moisture resistance, low radiation, resistance to dip-soldering and reflow-soldering, as well as good plastic sealing after the integrated circuit has been packaged. Spherical Quartz Powder is a key support material in EMC. Not only does it need to have a particle size that meets the packaging range, but its purity and radioactive element content must also be low.

Quartz powder, which is spherical in shape, can be widely used for electronic packaging. It can also be used in optical fibers or high-grade cosmetics.

Tech Co., Ltd. is a professional oxide powder We are a chemical product supplier with 12 years of experience. We accept payment by Credit Card, T/T (West Union), Paypal and T/T. The goods will be shipped to overseas customers via FedEx or DHL.

You can contact us for high quality spherical crystalline quartz powder. Contact us Send an inquiry.

The Preparation Methods of Spherical Quartz Powder

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Spherical quartz powder Has excellent properties including smooth surface, high surface area, hardness and stability of chemical properties. The spherical particles are fluid and can be mixed evenly with resin to create a film. The resin amount is low, while the quartz powder filling is high.
The lower the thermal conductivity and the smaller thermal expansion coefficient the molding compound, the higher the amount of quartz powder. The performance of the electronic component produced is better if the thermal expansion coefficient of silicon monocrystalline is close to that of the molding compound.

It is made by purifying and ultra-finely grinding natural quartz stone, and then passing it through a high temperature field. This causes its phase, shape and crystal to change instantly, from a solid to a molten to a solid state. The three most common preparation methods are high-temperature Plasma melting, high-temperature Melting Injection Method and Gas Combustion Flame Method.

Plasma melting at High Temperature
The high temperature plasma melting method sprays quartz powder into the plasma flame using high-temperature gases generated by AC/DC arc plasma. The powder is heated to melt and vaporize, then quenched. A cyclone and cloth bag are used to collect the powder. This produces spherical silica powder. It is characterized as a high heating temperature which can achieve a temperature field more than five times higher than chemical burning (above 3000K). A high temperature, high heat, and a high active atmosphere cause the chemical reaction to proceed quickly. This leads to the rapid formation high temperature phase compounds, which are difficult for liquid phase chemistry to synthesize. Such as nitrides carbides and borides etc. After rapid cooling, particles that have left the plasma will not grow.

The technology of plasma is extremely difficult. First, magnetic and electric properties of plasma can affect the temperature field. The temperature field has a small and concentrated size. Second, the generation of plasma energy is achieved by the current flowing through the ionized medium. A plasma that is too diluted will interfere with the current, and the effect will be lost. It is hard to control how fast the product spheroidizes.

High Temperature Melt Injection
The high-temperature injection method involves melting the material to a liquid by putting it in a hot field. When the melt comes out of the ejector it is sprayed high-pressured air, which breaks up the melt and disperses it into a mist. When the droplets cool down, they shrink back into smooth spheres. The method of high temperature melt spraying ensures a spherical and amorphous product. The key technologies of viscous quartz melting atomization in furnaces, high temperature materials for the quartz, and prevention secondary pollution are still not fully developed. This makes it difficult to make high-purity spherical powder.

Gas Combustion Flame method
The gas combustion method produces a flame using acetylene and hydrogen. It also uses natural gas, other fuel gases, and oxygen as supporting gas. Angular quartz powder and air are transported simultaneously into the fire. As the angular particles pass through the high temperature flame field, they are first melted to amorphous particle form. It shrinks immediately into spherical powder when it exits the high temperature field. The cyclone then collects the final product. Thermodynamics, gas dynamics and particle hydrodynamics are all involved in this method. The temperature field in plasma high-temperature fires is much lower and there are also fewer factors that influence it. It does not involve electromagnetic theory or the flow ions in an electromagnetic field. The movement problem makes it easier to manage various conditions. Equipment manufacturing is simplified, industrialization is easy, and development prospects are better.

Tech Co., Ltd. is a professional oxide powder We are a chemical product supplier with 12 years of experience. We accept payment by Credit Card, T/T (West Union), Paypal and T/T. The goods will be shipped to overseas customers via FedEx or DHL.

You can contact us for high quality spherical crystalline quartz powder. Contact us Send an inquiry.

The Main Preparation Method of Spherical Quartz Powder

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What is spherical Quartz Powder?

After being purified from quartz stone, spherical quartz powder is pulverized and ultrafinely ground. The powder then goes through a certain temperature field so that its phase form, crystal form and shape change instantaneously from solid state to liquid state. Amorphous powder is made from irregularly angular particles and transformed into regular spherical pieces.

The main preparation method for spherical powder quartz is

1. Flame melting is used primarily to mass produce spheroidized quartz dust. This technology has a key feature: the heating device must have a stable temperature field, a temperature range that can be adjusted easily, and there must be no secondary pollution to quartz powder. The ball-forming principle is that the high-temperature fire spray gun produces a high temperature flame between 1600 and 2000. The powder enters the high heat flame zone and its angular surface absorbs heat. This heat is then transferred to the powder’s interior, where it is completely molten. The action of surface tension means that objects tend to be stable. Spherical is the best state for forming a ball.


2. The local thermodynamic equilibrium (or thermal plasma) is another name for this plasma. The main feature of thermal plasma is the fact that the local electron temperature, ion temp (Ti), and gas temperature in the plasma are almost identical. The thermal plasmas are arc plasma, high frequency and induction plasma.


High-frequency plasmafusion is used for the preparation of spherical quartz. This method has a moderate range, stable control, high output and can achieve a high rate of spheroidization, making it more suitable for production. The principle and procedure are similar to that of flame melting. This mainly transforms the high-temperature heat source into an plasma generator.


The working gas is compressed gas. The volume of the working gases is 10m3/h. The high-frequency generator generates heat by generating high-temperature gas at 4000-7000. The silica is carried from the top of the plasma reactor furnace to the arc region by the feeder. After melting and gasifying, the powder is then transported through the feeder. The powder is quenched using a special quencher and then collected by gravity and bag dust (nanoscale). In a matter of 1s-2s the spherical and nanoscale SiO2 can be made.


3. Chemical synthesis

To obtain silica sol, heat the silica emulsion with ammonia or ammonium bicarbonate. The gel is then treated with acid to produce hydrated spherical silica. This product has a low uranium level, which is a characteristic. However, it is also easy to agglomerate.


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The Applications of Spherical Quartz Powder

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How do you define it? Spherical Quartz Powder ? The spherical quartz powder, made from quartz stone, is obtained after ultra-fine milling and purification. At high temperatures, the phase, crystal forms and shapes of this quartz change instantly from solid state to liquid state. Amorphous powder is made of irregularly formed angular particles that are transformed into regular spherical ones.
Here are some of the key features Spherical Quartz Powder
Smooth surface, large area and high stability of chemical properties are some of the benefits that spherical Quartz powder offers. Spherical powder can be mixed well with resin to make a thin film. A higher amount of quartz powder is better for electronic components. It will also have a lower thermal conductivity. Also, the mold compound has a smaller thermal expansion factor. The stress of spherical granules is 60% less than that of angular powder. Furthermore, the molding compound made with spherical crystal silicon has the lowest stress concentration and highest strength. The surface texture of spherical quartz powder is extremely smooth. It has low friction and wear, which may extend its service life by up to one-third.
Spherical Quartz Powder Spherical SiO2 Property
Other Titles Fused quartz, spherial quartz, spherical SiO2, silica
7631-86-9
Compound Formula SiO2
Molecular Weight 60.09
Appearance Powder White
Melting Point 1,600deg C (2,912deg F)
Solubility In Water N/A
Density 2533 kg/m3
Purity 99.5-99.9%
Particle Size 10-30nm
Boling Point 2,230deg C (4,046deg F)
Specific Heat N/A
Thermo Conductivity N/A
Thermal Expansion N/A
Young’s Module N/A
Exact mass 59.9668 g/mol
Monoisotopic 59.967 D
Spherical Quartz Powder Spherical SiO2
Spherical Quartz powder’s uses
There are many uses for spherical powdered quartz, with electronic packaging being the most popular. Electronic packaging is an industry that supports integrated circuits. As integrated circuits become increasingly sophisticated, the demands for packaging materials increase. Packaging forms are continually optimized and improved to meet these requirements. Three main types of electronic packaging include substrate, plastic, glue, and frame. The advantages of plastic packaging include its ease-of-use, low cost and ability to be made in mass quantities. Plastic packaging is responsible for approximately 95% of all integrated circuits worldwide. %above. EMC is the main plastic encapsulant. It houses more than 95% microelectronic component.
1. Microelectronic packaging must be able to withstand high humidity, low stress, low pressure, dip and reflow soldering, as well as good sealing properties. To address this issue, epoxy molding compounds must contain inorganic fillers. Most inorganic materials used currently are silicon micropowder and quartz micropowder. Large-scale, ultra-large-scale microelectronics circuits now have more stringent requirements for packaging material. EMC powder, which is an important supporting material, requires quartz powder to be of the required particle size. Quartz powder also needs its purity.
2. It is a sphere of silicon micropowder that has a good form and can be used to meet the technical needs of high-end integrated systems. This can reduce the temperature expansion coefficient, dielectric constant, and stress of sealing materials. The products also have excellent weather resistance, impact resistance and compression resistance. The main use of spherical Quartz powder in electronic packaging is also to manufacture optical inks and optical fibers. It can be used as a filler for paints coatings.
The principal supplier Spherical Quartz Powder
Luoyang Tech Co., Ltd. is a company that specializes in professional IT services. oxide powder Over 12 years’ experience in developing and researching chemical products. You can pay by Credit Card, T/T or West Union. We will send the items to overseas customers via FedEx or DHL.
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