Quartz powder in spheres
This powder has outstanding properties, such as a large specific area and smooth surface. It also exhibits high levels of hardness. It is very fluid, and can be mixed evenly with resin to make a film. Although the amount of resin used is minimal, it is sufficient to fill in quartz powder.
A higher amount of quartz powder is used to fill the mold compound, which results in a lower thermal conductivity. Also, it has a smaller thermal expansion coefficient. A better performance is achieved by electronic components whose thermal expansion coefficients are close to those of monocrystalline silicon.
After being purified from quartz rock, the crystals and phases of sphere quartz are pulverized and then passed through high temperatures to undergo a phase change. The powder from irregularly angular particles is transformed into regular spherical particle. Its current preparation techniques include the high-temperature Plasma melting method, high temperature melting injection method, and gas burning flame method.
Plasma melting at very high temperatures
To melt quartz powder, the high-temperature plasma method utilizes high-temperature gases generated from AC or DC arc plasma to heat it. It is then heated, melted, and immediately vaporized. Then it’s collected with a cloth bag and a cycleone. This is how the spherical silicone powder is made. This powder can be obtained at a high heat temperature. Chemical reactions can occur quickly at high temperature and in high heat. This includes borides, carbides, and nitrides. The plasma will stop cooling after the reaction material has been removed. Particles in plasma can then be formed depending on the needs of the atmosphere.
Plasma technology, however, is extremely difficult. Plasma technology is difficult because the magnetic and electrochemical properties of plasma affect plasma’s plasma temperature. It is tiny and very concentrated. Controlling the high temperature of the heating element is hard. The temperature range can also be difficult to set. The plasma energy is created by the current that passes through the medium. A too high level of dilution will cause the current to cease and the effect to be lost. It is therefore difficult to manage the product’s spheroidization rate and to produce large quantities.
High Temperature Melt Injection
High-temperature melt injection involves putting the material under high temperatures to melt it. After the melt has flowed out, it’s sprayed by high-pressure, through-the-ejector air. The high-speed, mist-forming airflow disperses and breaks down the melt. When they cool down, the tiny droplets become smooth particles. This is the easiest way to guarantee spheroidization. However, key technologies like furnace high temperatures materials and viscous quartz melting atomization haven’t been able to break through. Therefore, it is difficult to produce high-purity high-purity powdered quartz.
Method of Gas Combustion Flame
Natural gas, hydrogen and acetylene are the primary raw materials for gas combustion flame. As a supporting gas, oxygen and air can be used to create a flame by using closed-hearth furnaces. At the same moment, the airflow is used to transport the angular quartz into the flame. It is first melted in the high-temperature flame fields before it can be collected by the airflow. After it has left the high temperature field, the powder immediately shrinks and then is quickly cooled. It involves theories of thermodynamics as well as gas and particle hydrodynamics. First of all, plasma high temperature flames have a lower temperature field. Second, there is a smaller number of influencing factors. This does not involve electromagnetic theory or the movement of ions within the electromagnetic field. Because of the problem of motion, it is much easier to regulate various conditions. This makes equipment manufacturing simpler, allows for industrialization and offers better prospects.
Luoyang Tech Co., Ltd.
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.
You can find high-quality, high-quality quartz powder in the Spherical Quartz Powder section of our website.
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