6630DMD Polyester Composite Insulation Paper: A High-Performance Electrical Insulation Material 6630DMD polyester composite insulation paper is a high-performance electrical insulation material widely used in transformers, motors, generators, and other electrical equipment. It is composed of a polyester film (PET) laminated with non-woven polyester fiber (Dacron) on both sides, combining the excellent dielectric properties of PET with the mechanical strength and thermal stability of polyester fiber. This unique structure makes it an ideal choice for demanding electrical insulation applications. Key Properties and Advantages 1. Excellent Electrical Insulation Performance The polyester film core provides high dielectric strength, low dielectric loss, and superior resistance to partial discharge, ensuring reliable insulation in high-voltage environments. Its consistent thickness and uniformity contribute to stable electrical performance. 2. High Mechanical Strength The non-woven polyester fiber layers enhance tensile strength, tear resistance, and flexibility, making the material durable during winding, punching, and other manufacturing processes. It resists cracking and delamination under mechanical stress. 3. Thermal Stability 6630DMD can withstand continuous operating temperatures up to 130°C (Class B insulation) and short-term exposure to higher temperatures without significant degradation. This makes it suitable for applications where thermal endurance is critical. 4. Moisture and Chemical Resistance The material exhibits excellent resistance to moisture, oils, and many chemicals, preventing insulation failure in harsh environments. Its low hygroscopicity ensures stable performance even in humid conditions. 5. Dimensional Stability The composite structure minimizes shrinkage and deformation under thermal and mechanical stress, maintaining tight tolerances in precision applications. Applications Due to its balanced electrical and mechanical properties, 6630DMD is widely used in: - Transformers: As interlayer insulation for windings and barrier insulation. - Motors and Generators: For slot liners, phase insulation, and ground insulation. - Electronic Components: In capacitors and other high-voltage insulation systems. Conclusion 6630DMD polyester composite insulation paper is a versatile and reliable material that meets the stringent requirements of modern electrical insulation. Its combination of electrical performance, mechanical strength, and thermal resistance makes it a preferred choice for engineers and manufacturers seeking long-term durability and efficiency in electrical systems.