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What is Nomex

 
 

Nomex is a trademark for a flame-resistant meta-aramid developed by Dupont. Nomex has good thermal, chemical, and radiation resistance for a polymer material. For example, the firefighters’ suits are made of Nomex because of their resistance to fire and chemicals. But this also causes Nomex to have a poorer strength and a lower 

resistance to heat than Kevlar.

 

Nomex Felt Belt

Features of Nomex


  • Insulation
    Wherever electrical insulation is required, NOMEX can usually be seen.
  • Mechanical Toughness
    The product has very high strength, good elasticity, tear-resistance, abrasion resistance, and thinner products are flexible.
  • Thermal Stability
    The product is recognized by the UL material temperature class of 220°C, which means that it can maintain effective performance for more than 10 years even if it is continuously placed at 220°C.
  • Compatibility
    Most solvents are not affected and are very resistant to acid and alkali corrosion. It is also compatible with all varnishes, adhesives, transformer fluids, lubricating oils, and cooling agents.
  • Low-temperature Performance
    Under the boiling point of nitrogen (77K), the tensile strength of NOMEX; T410 type insulating paper and NOMEX® 993, 994 type laminates exceeds the strength value at room temperature.
  • Insensitive to Moisture
    When the product is 95% wet, its dielectric strength is 90% of that in an arid state. At the same time, many mechanical properties are improved.
  • Radiation Resistance
    even if the intensity of ionizing radiation reaches 800 Mrads (8 Mgrays), NOMEX® the product is unaffected, and after 8 times this dose of radiation, it still maintains its mechanical and electrical properties.
  • Non-toxic
    The product will not cause any known toxic reactions to humans or animals.
  • Flame resistance
    The product does not melt in the air and does not support combustion. And at 220°C, its limited oxygen index (LOI) is more significant than 20.8 (the critical value of combustion for general air), so it will not burn.

 

 

Applications of Nomex

 

   Filter Material

 

NOMEX fiber has excellent high-temperature resistance, flame retardancy, good spinnability and dimensional stability, and good mechanical properties. It is made into filter bags in the industry and can withstand high-temperature smoke at 200 ℃. The instantaneous temperature can reach 250℃, widely used in the high-temperature flue gas dust removal project of cement rotary kiln head and kiln tail.

   Flame-retardant Fabric

 

Use NOMEX fiber to woven fabric. Add 2% anti-static and 5% aramid 1414 to make NOMEX3A flame-retardant fabric, which is the best choice for work clothes in the petroleum industry.

 

Nomex in Aluminium Profile Extrusion Industry

 

 

Nomex felt belts are widely used in the aluminum extrusion industry. 

For aluminum extrusion, 

Nomex felt belts usually could withstand temperatures up to 450℉/280℃.

How Nomex Felt Belts are Made

 

  Specifications of Nomex Felt Belt

 

Type: Belt-NNP

Color: Off White 280°

Composition: 100%Nomex+One layor Nomex tension menber 100%Nomex+Nomex

Available size

Width: 20-1500mm

Lenght: 1700-11000mm

Thichness: 8,10,12mm

  Application of Nomex Felt Belt

 

If there are 2 or 3 cooling tables in the aluminum extrusion line, we can start using less costly materials like Nomex as the profile gets colder.

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