Customized Die Cutting DMD Composite Insulating paper For Motor Winding

Short Description:

DMD Composite Insulating Paper is a high-quality, multi-layer insulation material designed for electrical applications. It combines two outer layers of non-woven polyester fiber with a central layer of polyester film, providing excellent mechanical strength, dielectric properties, and thermal resistance. This composite structure enhances durability and flexibility, making it ideal for insulating electric motors, transformers, and generators. With reliable heat resistance and electrical insulation properties, DMD Composite Insulating Paper is widely used in high-performance electrical insulation systems.

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Product Detail

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Product Features

1. Super dielectric property
2. Reliable heat resistance
3. High mechanical strength
4. Good impregnating performance

Product Technical Data

Properties			Units	Values
Nominal thickness			mm	0.15	0.17	0.2	0.23	0.25	0.3	0.35
Thickness tolerance			mm	±0.02		±0.03			±0.04
Grammage and tolerance			g/m2	180±25	210±30	240±30	260±35	300±40	350±50	430±50
Tensile strength	MD	No bending	N/10mm	≥80	≥120	≥140	≥180	≥190	≥270	≥320
		After bending		≥80	≥105	≥120	≥150	≥170	≥200	≥300
	TD	No bending		≥80	≥105	≥120	≥150	≥170	≥200	≥300
		After bending		≥70	≥90	≥100	≥120	≥130	≥150	≥200
Elongation	MD	No bending	%	≥15					/
		After bending		≥10					≥5
	TD	No bending		≥20					/
		After bending		≥10					≥5
Breakdown Voltage No bending			KV	≥6	≥7	≥9	≥10	≥12	≥15	≥18
Bonding property at room temp.			/	No delamination
Bonding property at 180±2℃ 10min				No delamination, no bubble, no adhesive flow
Temp.index of heat-resistance in a long term (TI)			/	≥155
The quality warranty period			/	Twelve months

Product Application

It is used for motors, generators and electric appliances in the slot insulation, liner insulation and turn to turn insulation.
DMD is typically used on low and medium voltage electric machines. Specific applications include:
—Slot liner for electric motors.
—Phase insulation.
—Interlayer insulation material for transformers