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Mica powder is composed of muscovite, quartz, garnet, and rutile, and may also contain sodium feldspar, biotite, and chlorite. Garnet is rich in Fe and Mg, and the Si content in muscovite can reach 3.369, making it a high-pressure combination. It has insulating properties and low thermal loss, and is also a good black body. Natural mica sheets are made from thick mica that has been split, thickness-regulated, cut, drilled, or punched, resulting in mica parts with a certain thickness and shape. This product is suitable for use as raw and auxiliary materials in televisions, power capacitors, thermal relays, monitoring displays, aerospace, aviation, communications, radar, and heat-resistant skeleton sheets. It includes: electric heater chips, electric heater protective sheets, gaskets, electronic tube sheets, and bulb sheets. Due to its natural mineral composition, it features pollution-free, insulating, and good voltage resistance properties, and can be punched into various specifications of natural mica sheets according to customer needs.
Garnet powder is a general term for a type of island silicate mineral, which has many varieties and is named for its crystal structure resembling garnet seeds. Garnet powder is a powdered material obtained by physically crushing and finely grinding the raw garnet ore. Its main components include aluminum silicate, magnesium, iron, calcium, and other elements, and it is characterized by high hardness, high-temperature resistance, wear resistance, and good chemical stability.
Flake graphite is a type of natural crystalline graphite with a hexagonal layered crystal structure, appearing in a flaky form, hence the name flake graphite. Flake graphite has excellent physicochemical properties, such as high electrical conductivity, thermal conductivity, lubricity, good thermal stability, and resistance to acid and alkali corrosion. Additionally, the interlayer bonding force is relatively weak, making it easy to peel and modify.
Silica fume is actually a form of silica ash, but it usually refers to the ultra-fine silicon dioxide powder obtained as a by-product in industrial production. However, the term 'silica fume' mentioned in the market may be a figurative description of certain characteristics of silica ash, or it may refer to fibrous products containing silicon materials, such as silicon-based fiber materials used in friction materials or brake pads. For clarity, this discussion will mainly focus on the properties of silica ash and its applications in brake pads, although 'silica fume' may refer to different types of silicon-based materials.
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