Songhan Plastic Technology Co.,Ltd.

DuPont™ Nomex® 410 Paper, 20 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® 410 Paper, 20 mil Nominal Thickness.pdf
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Material Notes:
Nomex® Type 410 is a calendared insulation paper which offers high inherent dielectric strength, mechanical toughness, flexibility, and resilience. It is the original form of Nomex® paper and is widely used in a majority of electrical applications.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 1.06 g/cc
0.0383 lb/in³
Density 1.06 g/cc
0.0383 lb/in³
Thickness 508 microns
20.0 mil
516 microns
20.3 mil
Typical; ASTM D374
Mechanical Properties Metric English Comments
Film Elongation at Break, MD 20 %
20 %
Film Elongation at Break, TD 16 %
16 %
Tear Strength, Total 113 N
25.4 lb (f)
Initial in TD; ASTM D1004
163 N
36.6 lb (f)
Initial in MD; ASTM D1004
Elmendorf Tear Strength, MD 2.80 g/micron
71.0 g/mil
Calculated from mfr's report of 14.2 N per TAPPI-414 and the typical thickness
Elmendorf Tear Strength, TD 4.69 g/micron
119 g/mil
Calculated from mfr's report of 23.7 N per TAPPI-414 and the typical thickness
Film Tensile Strength at Break, MD 117.5 MPa
17040 psi
Calculated from mfr's report of 606 N/cm per ASTM D828 and the typical thickness
Film Tensile Strength at Break, TD 68.7 MPa
9960 psi
Calculated from mfr's report of 354 N/cm per ASTM D828 and the typical thickness
Thermal Properties Metric English Comments
Thermal Conductivity 0.157 W/m-K

@Temperature 150 °C
1.09 BTU-in/hr-ft²-°F

@Temperature 302 °F
Maximum Service Temperature, Air 220 °C
428 °F
220°C insulation by UL, the US Navy, and other tests
Oxygen Index 27 - 32 %
27 - 32 %
Range at RT for Type 410; depends on thickness and density
Shrinkage, MD 0.10 %
0.10 %
at 300°C
Shrinkage, TD 0.00 %
0.00 %
at 300°C
Electrical Properties Metric English Comments
Volume Resistivity 2.00e+16 ohm-cm
2.00e+16 ohm-cm
50% RH; tested on 10 mil thickness sample; ASTM D257
Surface Resistivity per Square 2.00e+16 ohm
2.00e+16 ohm
tested on 10 mil thickness sample; ASTM D257
Dielectric Constant 3.4

@Frequency 60 Hz

@Frequency 60 Hz
Dielectric Strength 32.0 kV/mm
813 kV/in
AC Rapid Rise; ASTM D149
55.0 kV/mm
1400 kV/in
Full-wave Impulse; ASTM D3426
Dissipation Factor 0.0070

@Frequency 60 Hz

@Frequency 60 Hz
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