Nomex 410: die cut parts and formed parts

Nomex 410: Stanzteile und Formteile vom Spezialisten

Nomex 410: die cut parts and formed parts

Ahlhorn | 30.01.2013

Dr. Dietrich Müller GmbH from Ahlhorn processes all Nomex types (410, 411, 414, 993 and 994) into strips, stampings and shaped parts.
As a special service, Dr. Dietrich Müller GmbH offers to produce prototypes without tooling costs, so that tests can be carried out in development projects with production-related parts.
Dr. Müller also offers comprehensive product advice and data sheets.

Dr. Dietrich Müller GmbH from Ahlhorn processes all Nomex types (410, 411, 414, 993 and 994) into strips, stampings and formed parts. Dr. Müller offers comprehensive product advice and data sheets.

NOMEX® is a synthetic aromatic polyamide polymer (aramid), which is characterised by a particularly stable molecular structure.

This particularly stable molecular structure is responsible for the excellent dielectric, thermal, chemical and mechanical properties of NOMEX® and opens up a wide range of applications for NOMEX® products.

NOMEX® papers and pressboards have been used for more than 35 years in transformers, motors, generators and other electrical equipment as surface insulation materials. They have proven their overload capacity and high reliability even under extreme operating conditions.

Especially the types Nomex Type 410 as well as Nomex Type 411 are used here.

NOMEX® Paper is made from two forms of the aramid polymer, the fibrids (as binding particles) and the flakes in a paper manufacturing process (type 411). In a second step a high compression and cross-linking of NOMEX® papers (types 410, 414, E56, 418) is achieved in a high temperature calendering process.

Thermal stability of Nomex paper

Nomex is UL-approved (file number: E34739) for use in electrical machines at continuous operating temperatures of up to 220 °C, whereby the properties remain virtually unchanged even in continuous operation (UL 546 B). Due to the approval as UL recognized repackager of Dr. D. Müller GmbH, the UL approval of the Nomex paper is retained even after processing into punched parts, moulded parts, tapes and insulating parts.

For a short time (over hours) the operation of machines insulated with Nomex is possible even at significantly higher temperatures.

Nomex: Flame resistant, self-extinguishing

NOMEX® aramid paper products do not melt and with an LOI (Limited Oxygen Index) value of over 20.8 at 220 °C (the critical value for combustion in normal air) they do not support the combustion process (UL 94 V-O).

The Nomex paper has high mechanical stability (tensile strength, stiffness, tear and tear propagation resistance, flexural strength), high inherent electric strength (Nomex allows short-term loads from 18 to 40 kV/mm, possible without further treatment with varnishes or resins).

Chemical resistance of Nomex paper

NOMEX® is exceptionally resistant to acids and alkalis and is compatible with all types of paints, adhesives, transformer fluids, lubricating oils and coolants.

Low temperature properties of Nomex paper

Due to its unique polymer structure, NOMEX® is used in a wide range of cryogenic applications.

Insulating tubes made of aramid paper

With Nomex 410, Dr. Dietrich Müller GmbH produces spiral wound tubes which can then be used to insulate bolts or connections.

These insulating sleeves can be manufactured in a wide range of diameters.

On the website of Dr. Dietrich Müller GmbH the data sheets of the material Nomex type 410 and the other types are available.

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