Calcined Mica tape is a high-performance insulation material widely used in electrical systems where high temperature resistance, excellent dielectric strength, and long-term stability are required. Compared with unCalcined Mica paper, Calcined Mica undergoes a controlled dehydration process that improves its structure, resulting in stronger insulation performance and enhanced durability. YILONG specializes in producing Calcined Mica tapes tailored for motors, generators, medium and high-voltage applications, as well as high-temperature industrial equipment.
Calcined Mica tape is manufactured by processing natural mica through high-temperature treatment. This calcination removes crystal water from the mica structure, producing a denser and more thermally stable material. The Calcined Mica is then bonded to a carrier material such as glass fiber, polyester film, or polyimide film, and combined with a resin binder to form a flexible tape.
The final product provides continuous insulation coverage, with strong resistance to heat, electrical stress, and environmental aging. However, choosing the correct mica tape depends not only on the mica itself but also on the carrier material and the binder system, as the resin typically defines the maximum working temperature of the tape.
Calcined Mica tape is designed to withstand demanding conditions. It is non-flammable and has low thermal conductivity, which makes it an effective thermal barrier in high-temperature environments. The calcination process improves the mica’s mechanical stability and enhances its resistance to heat and electrical breakdown.
Compared with unCalcined Mica paper, Calcined Mica paper usually has smaller mica flakes. This can increase cross-sheet toughness but may require longer resin impregnation time. UnCalcined Mica paper tends to absorb resin faster but can be more fragile during processing. Therefore, selecting the right type of mica paper and binder is crucial, especially for medium- and high-voltage insulation systems.
Calcined Mica tape combines high-temperature resistance, electrical insulation, and mechanical strength, making it suitable for a wide range of applications. The table below summarizes key properties of Calcined Mica tape.
|
Property |
Typical Specification |
|
Thermal Stability |
Continuous operating temperature up to 500–700°C |
|
Electrical Insulation |
High dielectric strength and stable performance |
|
Flame Resistance |
Non-flammable |
|
Thermal Conductivity |
Low thermal conductivity |
|
Moisture Resistance |
Low water absorption |
|
Mechanical Strength |
Good tensile and bending resistance |
|
Processability |
Easy to apply due to higher binder content |
High Temperature Insulation
Calcined Mica tape is widely used as insulation in high-temperature environments. Its enhanced structure and thermal stability make it suitable for heating elements, industrial furnaces, and high-temperature equipment where standard insulation materials fail.
Wire and Cable Insulation
In wire and cable systems, Calcined Mica tape is used to prevent electrical leakage and improve safety. Its excellent dielectric performance and thermal stability ensure long-term reliability under continuous electrical stress.
Motor and Generator Coil Insulation
Motor and generator coils require insulation that can withstand high voltages and high temperatures. Calcined Mica tape is ideal for coil wrapping and phase insulation, providing stable electrical performance and mechanical protection in demanding electrical machines.
Selecting the right Calcined Mica tape requires a comprehensive evaluation of the application environment. First, determine the operating temperature and voltage requirements. Then consider whether the insulation will be exposed to mechanical stress, vibration, or chemical environments. Finally, evaluate the carrier material and resin system to ensure they meet the required thermal and electrical performance.
At YILONG, we provide professional guidance to help customers choose the most suitable mica tape solution. Our technical team can recommend the optimal combination of mica paper, carrier, and binder based on specific operating conditions.
YILONG has decades of experience in manufacturing mica-based insulation materials. We offer not only Calcined Mica tape, but also high-voltage insulation components, mica sheets, mica tubes, spiral wound tubing, and other customized insulation products. Our products are designed for applications in motors, generators, transformers, cables, and high-temperature industrial equipment.
In addition to product supply, YILONG provides testing and engineering support. We can perform electrical testing, thermal aging tests, and mechanical performance evaluations to ensure the product meets your requirements. If standard products cannot fully satisfy your needs, we can design and manufacture customized insulation solutions.
Calcined Mica tape remains a reliable choice for high-temperature and high-voltage insulation applications due to its excellent thermal stability, dielectric strength, and flame resistance. However, choosing the right mica tape requires careful consideration of mica type, carrier material, and binder system. YILONG is committed to helping customers select and supply the most suitable insulation materials, ensuring optimal performance, safety, and service life.
If you are seeking Calcined Mica tape or need customized insulation solutions, please contact YILONG at yilong@yilonginsulation.com for professional support and tailored recommendations.
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