Brief Introduction
LE-9202 is a liquid solvent-free modified bisphenol A type epoxy resin.
LH-9202 is a liquid modified carboxylic anhydride hardener.
LF-675 is a low-viscosity solvent-free modified polyol.
LZ-622 is a modified tert-butylamine.
Thermally Stable Epoxy Resin for Voltage Transformers, Maintaining Optimal Performance under High Temperatures
Applications
Indoor electrical insulators for medium and high voltage applications, such as insulators, dry-type transformers, and other insulation products.
Processing Methods
Conventional gravity casting process under vacuum.
Automatic pressure gelation process (APG).
Production process is adjustable according to client’s present production methods.
Properties
Excellent resistance to thermal shock, superior mechanical and dielectric properties.
Formulation
| Epoxy resin |
LE-9202 |
100 pbw |
| Hardener |
LH-9202 |
100 pbw |
| Flexibilizer |
LF-675 |
0-20 pbw |
| Accelerator |
LZ-622 |
0.2-0.8 pbw |
| Filler |
Silica powder |
350-480 pbw |
| Color paste |
LC series* |
3 pbw |
Advantage
Package Image
Shipment image
Example application image
Thermally Stable Epoxy Resin for Voltage Transformers, Maintaining Optimal Performance under High Temperatures
Voltage transformers are integral components in power systems, and their performance is closely tied to the materials used in their construction. Among these materials, epoxy resin with high thermal stability plays a crucial role.
During the operation of voltage transformers, heat generation is inevitable. The continuous flow of electrical current through the windings and the magnetic core causes temperature rises. If the temperature exceeds a certain threshold, it can lead to a degradation of the transformer's performance and even cause premature failure. This is where thermally stable epoxy resin comes into play.
Thermally stable epoxy resin can withstand high temperatures without significant changes in its physical and chemical properties. It has a high glass transition temperature (Tg), which means it remains in a stable, solid state even at elevated temperatures. For example, in large power transformers used in power plants, the operating temperature can reach up to 100°C or even higher during peak load conditions. Epoxy resin with a high Tg can maintain its mechanical strength and insulation properties under such extreme heat, preventing the softening or melting that could occur with less stable materials.
This thermal stability also helps in dissipating heat more effectively. The epoxy resin acts as a thermal conductor, transferring the heat generated within the transformer to the surrounding environment. This reduces the temperature gradient within the transformer, ensuring that all components are operating within a safe temperature range. In addition, the resin's resistance to thermal aging means that it will not degrade over time due to repeated heating and cooling cycles. This is particularly important for transformers in applications where they are frequently subjected to load changes, such as in industrial settings with fluctuating power demands.
In the long run, using thermally stable epoxy resin in voltage transformers not only enhances their reliability but also extends their service life. It reduces the need for frequent maintenance and replacement, leading to cost savings for power utilities and industries that rely on these transformers. By maintaining optimal performance under high temperatures, this type of epoxy resin is a key enabler for the stable and efficient operation of modern power systems.
