Nomex® Aramid Paper

Nomex® - DuPont, is a synthetic, aromatic polyamide polymer with excellent properties.

Manufactured in a complex paper process with two different types of fibre (flakes and fibrides), Nomex offers outstanding chemical, mechanical and electrical resistance. Particularly in transformers, generators, motors and other electrical devices, Nomex® (usually in combination with impregnating agents) provides long-lasting insulation with considerable reserve capacity. The material is flame-retardant (UL 94 V0).

Even after 40 years on the market, Nomex® from DuPont still has the best possible combination of thermal, chemical and electrical resistance. There are now other similar products on the market, but they all bring specific disadvantages with them.

DuPont stocks a large number of specialised products to enable adaptation to the requirements of the application in question.

Nomex Klebeband
  • Nomex® 410 – basic version, heavily calendered for good electrical and mechanical properties (available from 0.05 mm to 0.350 mm)

  • Nomex® 411 – non-calendered Nomex® 410 for better absorption of impregnating agents, cushioning effect

  • Nomex® 818 – mica-filled variant for extremely enhanced corona resistance and dielectric strength

  • Nomex® E56A – relatively light and therefore less costly alternative to Nomex® 410 for economical application

  • Nomex® N196 – improved capillary effect for faster and more reliable impregnation

  • Nomex® 843S - a semi-conductive variant for field configuration in high-voltage machines

CMC Klebetechnik supplies adhesive tapes, laminates, punched shaped parts and rolls made from many of the versions listed above (some Nomex® versions are only available on request and in minimum quantities). 

 Advantages at a glance:

  • has very good dielectric strength, even without impregnation
  • In its compressed form, Nomex® has good mechanical strength
  • allows continuous use up to 220 °C with no loss of positive properties (min. 10 years), therefore higher power densities and a longer service life are possible
  • has good corona resistance
  • can be used for very low temperature applications up to almost 0°K
  • retains its dielectric strength even at high humidity
  • is extremely resistant to many solvents, acids and alkalis
  • is very easy to saturate and impregnate
  • In many cases, Nomex® is flame-retardant in accordance with UL94 and is self-extinguishing (V0)
  • is used in a very large number of insulation systems as the base insulation and is UL-listed (E34739)
  • can be used up to -196 °C
  • can be used as high-temperature-resistant thermal insulation (Nomex 411: 0.12 W/mK)
CMC-Type
Breakdown voltage (Veff)
Properties

CMC 19708
Laminate Nomex / Glass cloth Adhesive: Acrylate
Liner: Silicone paper
Total Thickness: 0,280 mm 
3.000
Extremely robust laminate made from saturable Nomex with fibreglass reinforcement. Extremely high power reserve even in the event of a fault.
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CMC 19714
​Laminate Nomex / Polyester / Glass cloth 
Adhesive: Acrylate
Total Thickness: 0,370 mm
> 9.000 Extremely robust laminate made from Nomex, a 50µm polyester film and fibreglass. Very good dielectric strength due to the polyester film.
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Datasheet
CMC 65120/ 65220
​Nomex Adhesive Tape 
Adhesive: Acrylate
With or without Liner: crepe paper
Substrate Thickness: 0,050 mm
Total Thickness: 0,110 mm
800
High temperature resistant and chemically resistant synthetic paper with excellent dielectric resistance for building transformers and motors, phase insulation etc.
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Datasheet
CMC 65121/ 65221
Nomex Klebeband
Adhesive: Acrylate
With or without Liner: crepe pape
Substrate Thickness: 0,080 mm
Total Thickness: 0,130 mm
1.700
​like CMC 65120 / 65220
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CMC 65122/ 65222
Nomex Klebeband
Adhesive: Acrylate
With or without Liner: crepe pape
Substrate Thickness: 0,130 mm
Total Thickness: 0,185 mm
3.300
​like CMC 65120 / 65220
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Datasheet
CMC 65123/ 65223
Nomex Klebeband 
Adhesive: Acrylate
With or without Liner: crepe pape
Substrate Thickness: 0,180 mm
Total Thickness: 0,235 mm
5.000
​like CMC 65120 / 65220
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CMC 65124/ 65224
Nomex Klebeband 
Adhesive: Acrylate
With or without Liner: crepe pape
Substrate Thickness: 0,250 mm
Total Thickness: 0,310 mm

​like CMC 65120 / 65220
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CMC 65838
​Laminat Nomex / Polyester
Adhesive: Rubber
Substrate Thickness: 0,090 mm
Total Thickness: 0,135 mm
≥ 5.000
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CMC 65842
​Nomex Klebeband
Adhesive: Acrylate
Substrate Thickness: 0,050 mm
Total Thickness: 0,115 mm
≥ 800 High temperature resistant and chemically resistant synthetic paper with excellent dielectric resistance for building transformers and motors, phase insulation etc. Very good adhesiveness.
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Datasheet