Silica is a form of silicon oxide. Its chemical formula is SiO2, and it is the most common type of quartz found in nature. Silica is the major component of sand. Silica, which can be formed as a variety of mineral compounds or synthetic products, is one of the most complex materials. fused-quartz and aerogel are just a few examples.
It is used as a structural material, microelectronics, and in components of the food and pharmaceutical industries.
What is Spherical Silica Pulp?
Spherical quartz dust has many advantages including a smooth surface and large specific surface area. It also has stable chemical properties.
First of all, the resin is stirred evenly into a thin film. The resin addition volume is low and the quartz powder filling is large. The mass fraction can exceed 90.5%. The lower the quartz powder filling, the lower its thermal conductivity. Additionally, the thermal expansion coefficients of plastic sealing materials are smaller. The closer they are to monocrystal silica thermal expansion coefficient, the better electronic components can be produced.
Second, the stress in spherical powder can be 60% lower than that in angular powder. Furthermore, the stress concentration for plastic seals made of spherical Quartz powder is the lowest, while its strength is the greatest. Finally, spherical powder has a smooth surface, a small friction coefficient, low wear, and a longer service life.
What is Spherical Silica Powder Used For?
Primarily used to make electronic packages. The main materials for electronic packaging are plastic sealing material, substrate material, and lead frame. Plastic packaging has seen rapid development since its birth. The current global market for integrated circuits is 95% because of its simplicity, cost effectiveness, and mass production. EMC (epoxy plastic packaging) is the mainstay of integrated circuit packaging. More than 95% use epoxy plastic sealing.
The main requirements for integrated circuit packaging are low stress, low moisture, low alpha radiation, dip resistance, reflow weldability, and low humidity. Inorganic fillers must be used in epoxy resin. Today, quartz powder is the most common inorganic ingredient. Microelectronics industry is rapidly developing, and large-scale, very big-scale integrated circuits are more difficult to manufacture. Quartz powder, which is important support for EMC materials, not only conforms to encapsulate specific scope but also meets the requirements of high purity, low-content radioactive elements, in particular the particle shape using the spherical requirements.
Spherical silica powder has a great shape and can be used to meet the technical requirements of high end integrated circuits. It can significantly reduce the thermal extension coefficient of plastic sealing material, reduce it’s dielectric constant, decrease stress, greatly increase rigidity and wear resistance.
Apart from being used in the area of electronic packaging, spherical Quartz Powder can also widely be used in high-grade cosmetics, high precision ceramics, precision grinder of optical devices, and electronic components, as well as filler for special paint coats.
Spherical Silica Powder Price
Price is affected by many factors, including supply and demand, market trends, economic activity and unexpected events.
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Spherical Silica Powder Supplier
Technology Co. Ltd. is a trusted global supplier and manufacturer of chemical materials. We have more than 12 years experience in producing super high-quality chemicals.
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