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 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 of angul powder. Furthermore, the stress concentration of 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?
Mainly used to make electronic packages. Substrat, plastic sealing material, lead frame, and solder are the main materials used in electronic packaging. Because plastic packaging is low-cost and easy to make, it has seen rapid development. Plastic packaging now accounts for over 95% of all integrated circuit market. 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. At present, 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 is used as an important support for EMC materials. Not only does it conform to specific scope requirements, but also meets the high purity, low-content radioactive elements demands, especially when it comes to the shape of the particles.
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, weather resistance. Fire resistance.
Spherical quartz can be used for electronic packaging. However, it can also widely used in high-grade cosmetics, high precision ceramics, precision grinding optical devices, and other electronic components.
Spherical Silica Powder Price
Price is affected by many factors, including supply and demand, industry trends and economic activity.
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Spherical Silica Powder Supplier
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