High Temperature Resistant Insulation Paper for Transformer Electrical Material

• Application: Capacitor, Generator, Inductor, Insulation Sleeving, Motor, Transformer
• Color: White
• Material: Polyester Film
• Model NO.: Insulation Material
• Maximum Voltage: 10KV~20KV
• Thermal Rating: H 180
• Thickness: 0.14mm-0.38mm
• Temperature: High Temperature Resistance
• Feature: Insulation
• Type: Insulation Paper
• Thermal Class: H
• Usage: Transformer and Motors
• Transport Package: Pallet / Carton
• Specification: Customized
• Trademark: Surada
• Origin: China
• HS Code: 8503009090
• Production Capacity: 20000kg/Moth

Product Description

Product Description

Our Flexible NMN Aramid Insulation Paper is a high-performance laminated material made of polyester film and aramid paper (Nomex). It provides excellent dielectric strength, mechanical durability, and heat resistance up to Class F (155°C). Widely used for motor winding, transformer insulation, and electrical devices, this DMD prepreg insulation material ensures long-term reliability and stability.

Specification

Model	NMN
Material	Polyester Film + Nomex Paper
Thickness Range	0.14mm-0.38mm
Temperature Rating	F/H Class (155–180°C)
Electrical Applications	Motor winding, transformer slot liner, interturn, phase insulation
From	Roll / Sheet / Custom Cut
Color	White

Advantages

Thermal Class H (180 °C) NMN composite insulation paper laminated with DMD prepreg and polyester film for superior heat resistance.

Excellent dielectric strength / high breakdown voltage ensures reliable performance in motor winding & transformer coils.

Smooth, uniform surface, high tensile strength and flexibility for slot liner, interturn insulation, and phase insulation.

Thickness range from 0.14-0.38 mm, width customizable . Roll / sheet formats available.

Samples available; MOQ reasonable; moisture-proof packaging and fast lead time.

Composition

Performance Requirements  

NMN is a three-layer soft composite material with the outer two layers made of DuPont Insulation Paper from DuPont and the inner layer made of polyester film.

Properties
NMN is a soft composite material with a heat resistance rating of H-class (180°C), featuring excellent mechanical properties such as tensile strength and edge tear resistance, as well as good electrical strength. Its smooth surface ensures trouble-free operation when used in low-voltage motors with automatic winding machines.

Appearance  
The surface should be uniform, smooth, and free of defects such as bubbles, pinholes, wrinkles, and imperfections.

Application Remarks
NMN combines the excellent temperature resistance and tear strength of DuPont paper with the superior dielectric strength and mechanical properties of polyester film. It is suitable for slot insulation, turn insulation, and cushion insulation in motors.

Performancere quirements

NO	Properties	Units	Values
1	Nominal thickness	mm	0.14	0.15	0.18	0.20	0.23	0.25	0.30
2	Thicknessallowed tolerance	mm	±0.01	±0.02	±0.02	+0.03	+0.03	+0.03	+0.03
3	Nominal grammage	g/m²	140	180	210	250	270	300	360
4	Grammageallowedtolerance	g/m²	±17	±20	±30	±30	±35	±40	±50
5	Film nominal thickness	um	50	75	100	125	140	165	200
6	Tensile strength (MD)	N/10mm	≥100	≥150	≥160	≥180	≥200	≥220	≥270
7	ensile strength (XD)	N/10mm	≥80	≥90	≥110	≥130	≥150	≥180	≥200
8	Elongation (MD)	%	≥10	≥12	≥12	≥12	≥12	≥12	≥12
9	Elongation(XD)	%	≥15	≥15	≥15	≥18	≥18	≥18	≥18
10	Electric breakdown voltage	KV	≥6	≥7	≥10	≥11	≥12	≥13	≥15
11	Bond strength at 180±2°C	Nodelamination,no blister,noadhesive flow

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