Songhan Plastic Technology Co.,Ltd.

DuPont™ Nomex® 411 Paper, 5 mil Nominal Thickness

Category Other Engineering Material , Composite Fibers , Polymer , Film , Thermoset , Aramid
Manufacturer DuPont
Trade Name Nomex®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF DuPont™ Nomex® 411 Paper, 5 mil Nominal Thickness.pdf
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Material Notes:
Nomex® Type 411 is the uncalendared precursor of Type 410. It has a lower density and lower property values. It is used in applications such as motor phase insulation and transformer coil end filler, where high bulk and conformability are of prime importance. Nomex® Type 411 offers increased impregnability and saturability compared to Type 410, making Type 411 suitable for use in cast resin applications such as turn and layer insulation.General NOMEX Information: Nomex® is a family of aromatic polyamide (aramid) fibers. This family consists of staple fibers, continuous filament yarns, paper, and spunlaced fabrics. The paper is produced from two forms of the aramid polymer. Small fibrous binder particles (fibrids) derived directly from the polymer under high shear conditions are mixed with short fibers (floc) which are cut to length from a fiber filament. The floc and fibrids are combined in a water based slurry from which a continuous sheet is produced on a specialized papermaking machine. This initial paper (as in Type 411) is low density and has poor properties. Subsequent densification and internal bonding is achieved by high temperature calendaring. The resulting paper is mechanically strong and has good electrical properties. Some uses for paper product include insulation in electric motors and transformers, wire wrapping, and honeycombed strength members in many aircraft. Nomex® brand fibers are inherently flame resistant: the flame resistance is a polymer property and does not diminish with the life of the fiber.Nomex® meta-aramid, poly(meta-phenyleneisophthalamide), is prepared from meta-phenylenediamine and isophthaloyl chloride in an amide solvent. It is a long chain polyamide in which at least 85% of the amide linkages are attached directly to two aromatic rings. The meta oriented phenylene forms bends in the polymer chain, reducing chain rigidity as compared to the para orientation in the chemically similar Kevlar® chain. This flexible polymer chain gives Nomex® more textile-like qualities while retaining high temperature properties similar to Kevlar®.Information provided by DuPont.
Physical Properties Metric English Comments
Bulk Density 0.300 g/cc
0.0108 lb/in³
Density 0.300 g/cc
0.0108 lb/in³
Thickness 127 microns
5.00 mil
140 microns
5.50 mil
Typical; TAPPI-411
Mechanical Properties Metric English Comments
Film Elongation at Break, MD 3.6 %
3.6 %
Film Elongation at Break, TD 4.8 %
4.8 %
Tear Strength, Total 4.00 N
0.899 lb (f)
Initial in TD; ASTM D1004
7.00 N
1.57 lb (f)
Initial in MD; ASTM D1004
Elmendorf Tear Strength, MD 0.787 g/micron
20.0 g/mil
Calculated from mfr's report of 1.1 N per TAPPI-414 and the typical thickness
Elmendorf Tear Strength, TD 1.10 g/micron
28.0 g/mil
Calculated from mfr's report of 1.5 N per TAPPI-414 and the typical thickness
Film Tensile Strength at Break, MD 12.9 MPa
1870 psi
Calculated from mfr's report of 18 N/cm per ASTM D828 and the typical thickness
Film Tensile Strength at Break, TD 6.40 MPa
928 psi
Calculated from mfr's report of 9 N/cm per ASTM D828 and the typical thickness
Thermal Properties Metric English Comments
Maximum Service Temperature, Air 220 °C
428 °F
Electrical insulation
Oxygen Index 28.5 %
28.5 %
ASTM D2863
Shrinkage, MD 0.60 %
0.60 %
at 240°C
Shrinkage, TD 0.70 %
0.70 %
at 240°C
Electrical Properties Metric English Comments
Dielectric Constant 1.2

@Frequency 60 Hz

@Frequency 60 Hz

@Frequency 1000 Hz

@Frequency 1000 Hz
Dielectric Strength 9.00 kV/mm
229 kV/in
AC Rapid Rise; ASTM D149
18.0 kV/mm
457 kV/in
Full-wave Impulse; ASTM D3426
Dissipation Factor 0.0030

@Frequency 60 Hz

@Frequency 60 Hz

@Frequency 1000 Hz

@Frequency 1000 Hz
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