NOMEX paper,aromatic polyamide paper
NOMEX paper is a synthetic aromatic amide polymer insulating paper, which has high mechanical properties, flexibility and good electrical properties, and can maintain its characteristics at higher temperatures, and is widely used in power generation Machines, transformers, electrical equipment, electromechanical and household appliances.
Eight characteristics
1. Inherent dielectric strength
The calendered Nomex insulating paper products can withstand short-term voltage field strengths of 18-40KV/mm without further treatment with varnish and resin; because NOMEX products have a low dielectric constant, it makes the insulation and cooling medium The electric field distribution is more uniform;
2. Mechanical toughness
The calendered NOMEX insulating paper has very high strength, good elasticity, tear resistance and abrasion resistance, and thinner products are flexible;
3. Thermal stability
NOMEX insulation paper is recognized by the UL material temperature class of 220¡ãC, which means that it can maintain effective performance for more than 10 years even if it is continuously placed at 220¡ãC;
4. Chemical compatibility
NOMEX insulating paper is basically not affected by most solvents, and it is very resistant to acid and alkali corrosion. It is easily compatible with all varnishes, adhesives, transformer fluids, lubricants and cooling agents. In addition, NOMEX insulating paper will not be damaged by insects, fungi and molds;
5. Low temperature performance
At the boiling point of nitrogen (77K), the tensile strength of NOMEX insulating paper T410 and NOMEX993 and 994 laminates exceeds the strength value at room temperature;
6. Not sensitive to moisture
When NOMEX insulating paper is 95% wet, its dielectric strength is 90% of that in a completely dry state. At the same time, many mechanical properties are actually improved;
7. Radiation resistance
Even if the intensity of ionizing radiation reaches 800 Mrads (8 Mgrays), NOMEX insulating paper is basically unaffected, and it still maintains its mechanical and electrical properties after 8 times of this dose of radiation;
8. Non-toxic/flammable
NOMEX insulation paper does not cause any known toxic reactions to humans or animals. NOMEX insulation paper does not melt in the air and does not support combustion. And at 220¡ãC, its limiting oxygen index (LOI) is greater than 20.8 (normally empty combustion critical Value), so it will not burn. Nomex insulation paper meets the flame resistance requirements of UL94V-0.
