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, silica, aerogel, and vapor silica are just a few examples.
It is used as a structural material, microelectronics (as a electrical insulator), 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, the spherical powder is fluid and evenly mixed into a resin 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 plastic sealing materials’ thermal expansion coefficients 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 from 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?
They are primarily used for electronic package materials. The main materials for electronic packaging are plastic sealing material, substrate material, and lead frame. Plastic packaging has seen rapid development since its inception. The current global market for integrated circuits accounted for over 95% of all packaging. 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 moisture resistance and low stress. They also need to resist reflow welding and dip resistance. Inorganic fillers must be used in epoxy resin. The most common inorganic additives are currently quartz powder. 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 and reduce stress. Also, it can increase the rigidity. Tensile resistance, compression resistance, impact resistance. Fire resistance.
Spherical quartz can be used for electronic packaging. However, it can also widely be used in the production of high-grade optical ink, precision ceramics, precision grinding optical devices, and electronic components.
Spherical Silica Powder Price
Price is affected by many factors, including supply and demand in a market, industry trends and economic activity.
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Spherical Silica Powder Supplier
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