Aramid paper is a high-temperature resistant insulation product with an excellent balance of physical and electrical properties. Aramid paper is a calendared insulating paper which offers excellent dielectric strength, mechanical toughness, flexibility and resilience.
Aramid fibres, short for aromatic polyamide, are a class of heat-resistant and strong synthetic fibres. As well as electrical insulation and temperature resistance for industrial and electro-mechanical applications aramid fibre products are used in aerospace and military applications, for ballistic-rated body armour fabric and ballistic composites, in marine cordage, marine hull reinforcement, and as an asbestos substitute for PPE and other fire resistant products.
The chain molecules in the fibres are highly oriented along the fibre axis. As a result, a higher proportion of the chemical bond contributes more to fibre strength than in many other synthetic fibres. Aramids have a very high melting point (>500 °C).
Common aramid brand names include Nomex® & Kevlar®
Nomex® is extensively used in the electric/electronics field as a reliable and tough insulator particularly where high temperatures are specified. Used properly, Nomex® paper and pressboard products can extend the life of electrical equipment, reduce premature failures and repairs, and act as a safeguard in unforeseen electrical stress situations.