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.
