DMD Paper

For different sizes, current stock or more information, please contact us at: +359888888094; elektrabg@abv.bg

Description

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DMD paper is a flexible three-layer electrical insulating material made of PET foil (Mylar), double-sided with a polyester fiber batting (Dacron). The material falls into three classes, the main difference between them being the maximum temperature they can withstand – class B up to 130°C, class F up to 155°C and class H up to 180°C. The DMD paper can be cut at custom lengths and kilograms, as well as at different widths in the form of tapes.

Areas of application

• Electrical insulation products
• Transformers
• In motors
• Slot liner
• Other

Stock

Class B			Class F			Class H
Thickness (mm)	Width (mm)	Colour	Thickness (mm)	Width (mm)	Colour	Thickness (mm)	Width (mm)	Colour
0.15	1000	White						White
0.17	1000	White	0.17	1000	Pink● Green●			White
0.20	1000	White	0.20	1000	Pink● Green●	0.20	1000	White
0.23	1000	White	0.23	1000	Pink● Green●	0.23	1000	White
0.25	1000	White	0.25	1000	Pink● Green●	0.25	1000	White
0.30	1000	White	0.30	1000	Pink● Green●	0.30	1000	White
0.35	1000	White	0.35	1000	Pink● Green●	0.35	1000	White

The rolls can be at sizes according to the customer’s request and can be cut at different widths.

Specifications

Specifications DMD paper class B

DMD paper class B
Properties			Unit	Value
Nominal thickness			mm	0.18	0.20	0.23	0.25	0.30	0.33
Deviation in thickness			mm	±0.025	±0.030	±0.030	±0.030	±0.030	±0.035
Nominal weight and deflection			g/m2	190 ±28	220 ±33	260 ±39	300 ±45	350 ±52	425 ±63
Breakdown voltage			kV	≥7	≥9	≥10	≥12	≥15	≥18
Nominal film thickness			μm	75	100	125	150	190	250
Tensile strength	MD	No bending	N/10mm width	≥120	≥140	≥180	≥190	≥270	≥320
		After bending		≥105	≥120	≥150	≥170	≥200	≥300
	TD	No bending		≥105	≥120	≥150	≥170	≥200	≥300
		After bending		≥90	≥100	≥120	≥130	≥150	≥200
Elongation in tension	MD	No bending	%	≥15				–
		After bending		≥10				≥5
	TD	No bending		≥20				–
		After bending		≥10				≥5
Binder quality at room temperature			–	No delamination
Binder quality at temperature 155°С ±2% – 10min.			–	No delamination, no blistering, no leakage of the binder

Specifications DMD paper class F

DMD paper class F

Properties

Unit

Value

Nominal thickness

mm

0.15

0.18

0.20

0.23

0.25

0.30

0.35

0.40

Deviation in thickness

mm

±0.020

±0.025

±0.030

±0.030

±0.030

±0.035

±0.040

±0.040

Relative weight

g/m2

150 ±22

190 ±28

210 ±32

240 ±36

360 ±39

310 ±46

390 ±58

440 ±66

Tensile strength

MD

No bending

N/50mm width

≥80

≥100

≥120

≥130

≥150

≥170

≥200

≥300

After bending

≥80

≥90

≥105

≥115

≥130

≥150

≥180

≥220

TD

No bending

≥80

≥90

≥105

≥115

≥130

≥150

≥180

≥220

After bending

≥70

≥80

≥95

≥130

≥120

≥130

≥160

≥200

Elongation in tension

MD

%

≥10

≥10

≥10

≥10

≥10

≥5

≥5

≥5

TD

≥15

≥15

≥15

≥15

≥15

≥5

≥5

≥5

Breakthrough tension

At room temperature

≥7

≥8

≥9

≥10

≥11

≥13

≥15

≥18

At 155 ± 2ºС

≥6

≥7

≥8

≥9

≥10

≥12

≥14

≥17

Binder quality at room temperature

No delamination

Binder quality at temperature 155°С ±2% – 10min.

No delamination, no blistering, no leakage of the binder

Binder quality after exposure to moisture

No delamination

Stiffness

MD

N

≥10

≥15

≥20

≥20

≥20

≥20

≥20

≥20

TD

≥15

≥20

≥30

≥30

≥30

≥30

≥30

≥30

Specifications DMD paper class H

DMD paper class H
Properties			Unit	Value
Nominal thickness			mm	0.18	0.20	0.23	0.25	0.30	0.33
Deviation in thickness			mm	±0.025	±0.030	±0.030	±0.030	±0.030	±0.035
Nominal weight and deflection			g/m2	190 ±28	220 ±33	260 ±39	300 ±45	350 ±52	425 ±63
Breakdown voltage			kV	≥7	≥9	≥10	≥12	≥15	≥18
Nominal film thickness			μm	75	100	125	150	190	250
Tensile strength	MD	No bending	N/10mm width	≥120	≥140	≥180	≥190	≥270	≥320
		After bending		≥105	≥120	≥150	≥170	≥200	≥300
	TD	No bending		≥105	≥120	≥150	≥170	≥200	≥300
		After bending		≥90	≥100	≥120	≥130	≥150	≥200
Elongation in tension	MD	No bending	%	≥15				–
		After bending		≥10				≥5
	TD	No bending		≥20				–
		After bending		≥10				≥5
Binder quality at room temperature			–	No delamination
Binder quality at temperature 155°С ±2% – 10min.			–	No delamination, no blistering, no leakage of the binder