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Asphalt-based soft felt
Pitch-based soft felt is a high-performance thermal insulation material made from pitch-based carbon fibers through processes such as needling and hot pressing. It inherits the advantages of pitch-based carbon fibers, including high strength, high modulus, and chemical resistance, while also possessing excellent thermal conductivity and good thermal stability. It is widely used as insulation and heat shield layers in high-temperature equipment such as photovoltaic, semiconductor, and vacuum heat treatment systems.
Viscose-based soft felt
Viscose-based soft felt is a high-temperature thermal insulation material made from viscose fibers as the precursor of carbon fibers, through processes such as impregnation, carbonization, and graphitization. Viscose fiber, derived from natural plant-based regenerated fibers, has inherently strong water absorption properties. As a result, viscose-based felt is smoother and superior in insulation performance. It is a crucial material in high-temperature thermal field applications such as semiconductors (monocrystalline silicon, silicon carbide crystal growth furnaces), photovoltaics, and heat treatment.
PAN-based soft felt
PAN-based soft felt is a high-performance thermal insulation material made from PAN-based carbon fibers as the original yarn, through processes such as pre-oxidation, carbonization, and graphitization. As the raw material for production, PAN-based fibers (i.e., polyacrylonitrile fibers) do not contain oxygen elements, making pre-oxidation an essential process step. As a thermal insulation material, PAN-based soft felt exhibits strong oxidation resistance, long service life, and superior performance.
Battery soft felt
Energy storage is one of the crucial aspects of new energy development. We place signifcant emphasis on the advancement of the energy storage industry and have developed carbon-based materials tailored for a variety of advanced energy storage batteries: REDOX flow battery (all-vanadium, zinc-iron, iron-chromium), sodium-sulfur battery. Our battery soft felts, widely used in energy storage batteries, have the characteristics of low electrical resistivity, easy cutting, high activity, and excellent chemical resistance.
Specialized soft felt for the semiconductor industry
Crystal growth is a crucial process in semiconductor production, and high-performance thermal insulation materials can efficiently maintain stable temperature in the furnace, thereby effectively reducing heat energy loss. Our soft felt feature low thermal conductivity, high purity, and outstanding thermal stability, which are ideal option for high-temperature thermal field like insulating resistance-heated and induction-heated vacuum furnaces. Furthermore, we can customize the soft felt based on your specific production requirements.
Viscose-based hard felt
Viscose-based hard felt typically refers to a high-performance composite material obtained through special processing using viscose-based carbon fiber felt as the reinforcing material. This material not only retains the lightweight, high strength, and high modulus characteristics of viscose-based carbon fibers but also exhibits excellent mechanical properties and chemical stability. As a high-performance composite material, it demonstrates unique application potential in the photovoltaic and semiconductor industries.
PAN-based hard felt
PAN-based hard felt is made from polyacrylonitrile (PAN) fibers through a special process. It possesses high strength, high modulus, good heat resistance, and corrosion resistance, making it the preferred material in aerospace, energy, and high-temperature heat treatment equipment. PAN-based hard felt maintains stable physical properties in high-temperature environments, resisting melting or deformation. Additionally, its low thermal conductivity and excellent thermal shock resistance make it suitable for use in high-temperature furnaces such as single crystal furnaces and polycrystalline furnaces.
Cured felt
The cured felt is made from carbon fiber materials and resin-based materials through high-temperature treatment. It can be used for thermal insulation and protection in various fields such as semiconductors, photovoltaics, powder metallurgy, and for single crystal CZ or polycrystalline ingots, industrial sintering, etc. It can withstand heat up to 3000°C in vacuum or inert atmosphere. This insulation cylinder exhibits excellent thermal insulation and processing properties, while its ash content can be controlled below 20ppm.
Extrusion hard felt
Extrusion hard felt is usually formed by extrusion process based on high-quality fiber raw materials. In the extrusion process, with the help of a specific mold and applied pressure, the fibers are tightly arranged and interwoven, and finally form a rigid felt-like material with certain shape, density and strength.
Headquarters Address: Building 33, Lane 850, Lanfeng Road, Fengxian District, Shanghai
Contact number: 021-34635315
Email: info@qcarbons.com
Headquarters Address: Building 33, Lane 850, Lanfeng Road, Fengxian District, Shanghai
Contact number: 021-34635315
Email: info@qcarbons.com
