Almohadilla aislante cerámica de óxido de aluminio

Almohadilla aislante cerámica de óxido de aluminio is a special ceramic component made of high-purity aluminum oxide (Al ₂ O3) material through high-temperature sintering. Due to its excellent insulation performance, mechanical strength, and environmental resistance, it has become an indispensable basic component in fields such as power, electronics, new energy, and high-temperature industry.

Product Overview and Core Features
Alumina ceramic insulation pads are mainly composed of alpha alumina as the main crystal phase, and the alumina content is usually divided into different purity levels such as 95% and 99%. Its typical characteristics include:
-High insulation resistance: The volume resistivity at room temperature is greater than 10 ΩΩ· cm, effectively blocking current leakage.
-Excellent mechanical properties: high compressive strength (up to 2000 MPa or more), high hardness (Mohs hardness level 9), and wear resistance.
-Excellent heat resistance: Long term use temperature can reach 1600 ℃, low thermal expansion coefficient, and good thermal stability.
-Buena inercia química: resistant to acid and alkali corrosion, anti-oxidation, suitable for harsh chemical environments.
-Low dielectric loss: Stable dielectric performance at high frequencies, suitable for high-frequency and high-voltage applications.

Principales ámbitos de aplicación

1. Power transmission and distribution system: used for insulation support and spacing of high-voltage switchgear, circuit breakers, transformers and other equipment to ensure electrical clearance.
2. En el ámbito de las nuevas energías: insulation and heat dissipation of power devices for photovoltaic inverters, wind power converters, and charging pile modules.
3. Rail transit: insulation fixation and protection of locomotive traction system and power supply lines.
4. Industrial heating and metallurgy: The insulation layer for high-temperature kilns and induction heating equipment is resistant to high temperatures and does not affect heat conduction.
5. Fabricación de semiconductores: Insulated fixtures and carriers in semiconductor equipment that meet clean environmental requirements.

Ventajas del producto y problemas resueltos

-High safety and reliability: completely eliminate the risk of short circuit caused by metal pads and improve the overall insulation level of the equipment.
-Long lifespan and stability: no aging, no creep, maintaining dimensional and performance stability under temperature cycling and mechanical vibration.
-Multi functional integration: It can simultaneously undertake multiple functions such as insulation, support, heat dissipation, and sealing, simplifying structural design.
-Strong environmental adaptability: suitable for harsh working conditions such as high humidity, high pollution, and corrosive atmosphere.

Cuestiones clave que deben abordarse

1. High voltage breakdown risk: Replace ordinary plastic or rubber pads to solve the problem of easy breakdown and carbonization under high voltage.
2. High temperature failure: Avoid softening and decomposition of organic materials at high temperatures to ensure insulation continuity under high temperature conditions.
3. Insufficient mechanical support: Provide mechanical strength much higher than that of polymer materials to prevent equipment displacement caused by vibration or pressure.
4. Heat dissipation bottleneck: Alumina ceramics have good thermal conductivity (about 20-30 W/m · K), which is helpful for thermal management of power devices.

Caso de cliente (anónimo)
-Case A: High voltage switchgear manufacturer
The customer originally used epoxy resin pads, but experienced multiple surface creepage faults during operation in humid and hot regions. After switching to the 99% alumina ceramic pad provided by our company, the insulation performance has been significantly improved, and it has been running continuously for three years without any abnormalities in the 40kV system. The customer has included the product in their standard design list.
-Case B: Charging module supplier for new energy vehicle companies
The customer needs to address both insulation and heat dissipation issues in the DC fast charging module. We have designed an integrated ceramic pad with insulation, support, and heat dissipation channels, which improves the module’s heat dissipation efficiency by 15%. It has passed long-term reliability testing under a 1500V system and has been widely used in its second-generation charging pile products.
-Case C: Metallurgical Enterprise Heat Treatment Production Line
The customer originally used asbestos pads at the electrode support of the high-temperature annealing furnace, which had problems with rapid insulation degradation and frequent replacement. After using our customized high-purity alumina pad, the service life has been extended from 3 months to over 2 years, and the environmental and health hazards of asbestos materials have been avoided.

Aluminum oxide ceramic insulation pads have become the preferred material for high demand insulation scenarios due to their comprehensive performance advantages. Proper selection and high-quality products are crucial for the safety, lifespan, and reliability of equipment.
What insulation, heat dissipation, or high temperature resistance challenges have you encountered in the use of your product? Welcome to leave a message and communicate with us to explore solutions together.

Cerámica Brudeze suministra y vende una amplia gama de vidrio de cuarzo de alta calidad, incluyendo cerámica de alúmina, cerámica de circonio, cerámica de nitruro de silicio, cerámica de nitruro de aluminio, cerámica de carburo de silicio, cerámica de carburo de boro, biocerámica, cerámica mecanizable, etc. Podemos satisfacer los requisitos de personalización de varios productos cerámicos.