In modern home appliances, the power module is one of the core components, which directly affects the safety and stability of home appliance operation. Whether it is a refrigerator, washing machine, water heater, or small smart home device, the power module works in a high-temperature, high-pressure, humid, and even dusty environment for a long time. Without effective protective measures, it is prone to problems such as short circuit, breakdown, cracking, and water ingress failure, which can affect the overall lifespan and user experience of the device.
Background and Challenges
Traditional power protection methods often rely on simple shell isolation or local adhesive sealing, but there are still the following challenges:
❌ Insufficient mechanical strength: High frequency switches and long-term thermal cycling can easily cause the gel to crack and lose its protective effect.
❌ Poor flame retardancy: Once the power supply overheats or breaks down, ordinary colloids are difficult to meet safety standards.
❌ Insufficient moisture resistance: In humid environments, water vapor infiltration can cause corrosion of metal components and reduce insulation performance.
❌ Limited temperature resistance: Under long-term operation, the instantaneous temperature of household appliance power supplies may shock up to 150 ℃, posing a severe test on the stability of colloids.
This poses higher requirements for power supply sealing materials: they must have high hardness, good adhesive strength, and be able to firmly fix components, while also being flame retardant, moisture-proof, and heat-resistant to ensure long-term stable operation.
Solution: EP 1712 high hardness epoxy sealant
For the challenge of home appliance power modules, it is recommended to use EP 1712A/B two-component epoxy potting material. This material is a solvent-free room temperature curing system with moderate fluidity and friendly operation process. After curing, it forms a dense protective layer with high hardness and toughness.
Product advantages
✔ High hardness and toughness: It combines rigidity and impact resistance, avoiding cracking caused by thermal expansion and contraction.
✔ Excellent flame retardancy: After curing, it meets UL 94 V-0 standards and meets power safety requirements.
✔ Insulation protection: High electrical insulation to prevent breakdown and leakage.
✔ Moisture proof and Waterproof: With extremely low water absorption, it effectively resists moisture infiltration.
✔ Strong temperature resistance: The short-term temperature resistance can reach 150 ℃, ensuring stability under extreme working conditions.
✔ Good process adaptability: moderate fluidity, easy to fill complex power module structures.
View product details
Application Cases
A certain household appliance brand encountered the following problems while developing a new generation of smart washing machine power supply:
The power module is located at the bottom of the body and needs to withstand humid environments for a long time;
High frequency power devices generate significant heat, and ordinary packaging materials are prone to aging and cracking;
The customer requests that the entire power supply pass flame retardant certification to ensure safety.
After using EP 1712 epoxy sealant, the test results showed that:
Under long-term aging at 125 ℃, the gel does not crack or peel off;
In high humidity testing, the power performance remains stable and there is no significant decrease in insulation resistance;
By obtaining UL 94 V-0 flame retardant certification, the risk of failure is effectively reduced;
The lifespan of the power supply has been extended by over 30%, and customer feedback has shown a significant improvement in stability.
Application field
EP 1712 is not only applicable to household appliance power supplies, but also widely used in:
Automotive Electronic Control Unit (ECU)
Sealing protection for various sensors
LED driver power supply and lighting products
Industrial power module
In the protection of home appliance power modules, EP 1712 high hardness epoxy sealant provides comprehensive safety protection for electronic components with its excellent mechanical strength, flame retardancy, moisture resistance, and temperature resistance, helping customers maintain stable product operation in harsh environments.
