Nomex® Laminates – The High-Performance Insulation Material for Electrical Applications

Nomex^® laminates, a product developed by DuPont, are high-performance insulation materials crafted by bonding Nomex^® paper, an aramid fiber, to polyester or polyimide films. This results in a flexible, multi-layered structure ideal for a wide range of electrical and mechanical applications.

Common Types of Nomex^® Laminates

Nomex® laminates come in several configurations, each designed to meet specific application needs. The primary types include:

NMN: A three-ply laminate that features Nomex^® paper sandwiched on both sides of a polyester film.

NKN: A three-ply laminate with Nomex^® paper bonded to both sides of a polyimide film.

NM: A two-ply laminate with Nomex^® paper bonded to a polyester film on one side.

These variations allow for customized performance characteristics, including increased durability and enhanced insulation properties.

Key Features

Nomex^® laminates are known for their exceptional qualities, which make them highly suitable for electrical insulation in demanding environments. Key features include:

High Temperature Resistance: Nomex^® laminates are engineered to withstand extreme temperatures. They are suitable for Class F (155°C) and Class H (180°C) applications, ensuring reliable performance in high-heat environments.

Excellent Electrical Insulation: With strong dielectric strength, Nomex^® laminates prevent electrical breakdown and short circuits, making them an ideal choice for electrical systems that require effective insulation.

Mechanical Strength: The combination of Nomex^® paper and polyester or polyimide films enhances the laminate’s mechanical strength, providing superior toughness and durability.

Flexibility: The flexibility of these laminates enables their use in a variety of shapes and sizes, accommodating a broad spectrum of electrical equipment designs.

Applications

Nomex^® laminates are widely utilized in electrical and mechanical applications that demand high-performance insulation. Key applications include:

Electrical Motors and Generators: They are commonly used as slot liners, wedges, and phase insulation in motors and generators, ensuring stable and efficient operation.

Transformers: Nomex^® laminates serve as interlayer insulation, contributing to the safe and effective functioning of transformers.

Other Electrical Equipment: These laminates are also used in a variety of other electrical devices and systems that require robust and reliable insulation.

Advantages of Nomex^® Laminates

Nomex^® laminates offer several advantages over traditional insulation materials:

Cost-Effective: With their balance of high performance and reasonable cost, Nomex^® laminates provide an economical solution for applications requiring reliable insulation.

Superior Performance: Due to their enhanced temperature and mechanical properties, Nomex^® laminates are often preferred over conventional materials for demanding electrical applications.

Versatility: Nomex^® laminates can be customized to meet the specific needs of a wide range of industries and applications, ensuring that each project gets the tailored performance it requires.

In conclusion, Nomex^® laminates are a highly versatile, cost-effective, and reliable solution for high-performance electrical insulation. Their ability to withstand extreme temperatures, coupled with excellent mechanical strength and electrical insulation properties, makes them indispensable in the manufacturing of electrical motors, transformers, and other essential equipment.

Hatim Dielectrics supplies both Nomex^® Polyimide Nomex^® as well as Nomex^® Polyester Nomex^® Laminates. These laminates are available in standard widths of 900mm in continuous rolls in various thickness and constructions.

Hatim Dielectrics also supply slitted tapes to specific sizes to facilitate auto slot insertion process in small stators.

Nomex^® is a registered trademark of DuPont^™