Fan Motor Potting Protection

In extreme operating conditions such as long-term high-speed operation, alternating high and low temperatures, humid saline environments, and intrusion of oil, dust, and other contaminants, fan motors place extremely high demands on the weather resistance, impact resistance, and electrical insulation performance of their encapsulation protective layer. Polyurethane potting solutions, with their outstanding flexibility, high bonding strength, and excellent chemical resistance, can effectively buffer vibrational stress, isolate moisture and corrosive substances, and create a dense and durable sealing protection system to ensure stable and safe operation throughout the motor’s entire lifecycle.

OurKey Advantages

Wide Temperature Range Stability: It maintains stable performance in environments ranging from -70°C to 150°C and exhibits excellent thermal cycling resistance, making it suitable for complex outdoor, frigid, and high-temperature operating scenarios.
‌High Sealing and Protective Performance: Achieves an IP67 waterproof rating, completely preventing dust ingress and allowing the motor to operate normally even after short-term immersion in water; passing a 60-day salt spray test, it effectively resists corrosion in highly saline coastal and industrial environments, significantly extending the motor's service life.
‌Excellent Electrical Insulation: Some products achieve a dielectric strength of up to 24 kV/mm, and after 500 hours under conditions of 85°C/85% RH, the surface insulation resistance remains above 10⁸ Ω, ensuring long-term insulation performance of the motor.
‌High Adhesion and Mechanical Strength: Exhibits excellent adhesion to various substrates such as metals and plastics, with hardness ranging from flexible to rigid, ensuring structural integrity during high-speed vibrations and frequent start–stop cycles without cracking or delamination of the encapsulation layer.
‌Efficient Production Adaptability: Features low mixing viscosity, enabling smooth flow into narrow gaps and complex geometries for void-free encapsulation; its curing speed is adjustable, adapting to different production rhythms and meeting the customized, multi-variety, small-batch requirements of fan motor manufacturing.