Data Sheet

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                  Pre-preg NMN   6640-P

Properties and Application:

Prepreg NMN is made by the process of pre-curing NMN(Nomex* + Mylar + Nomex, three layers) with Impregnation of

Hi-temp resistant B-stage Epoxy resin by baking, with long shelf life at room temp, low pre-curing temp & time, excellent

electrical insulation, low moisture absorption, good chemical and thermal resistance. Its insulation glass is F(155c), widely

used for slot insulation, layer insulation and slot closure.

 

Main Specification:

  Properties

  Unit

Values

Structure (N+M+N)

mil

2-4-2

3-3-3

Thickness Tolerance

mm

0.220.033

0.250.037

Weight per unit area

g/m2

27038

29540

Tensile

strength

MD

Mpa

86

76

TD

55

72

Elongation

MD

%

15

15

TD

20

20

Dielectric Strength

KV

12

12

Bond strength at room temp. (laminating prod)

 No delamination, no blister, no adhesive flow

Solidify condition

The material bond with copper foil well after 2 hours under 120

Appearance

Neat and smooth surface, No obvious non-uniform resin, No inclusions against quality, No surface damage at unreeling. No bubbles, folding damage etc.

* Nomex is the remarkable of EI Dupont 

Product Supply:

1. Max Width: 907mm, slitting width is available upon request, width tolerance:1.0mm

2. Packing: 20~60 Kgs/Roll, in Carton and Pallet

3. MOQ: 1,000 Kg in a lot, and 500 Kg each size..

4. Shelf life: 6 months at 25c from the date of delivery. Over the period, it can be still be used if the re-testing is in

agree with the technical requirements. The rolls should stand up, far from heat sources, fire and sunshine

Application Advice:

    

Temp()

Room Temp~80

80 ~120

120~150

150 ~120

120 ~80

Heating time(h)

0.5

0.5-1

0.5-1

1

0.15

Baking time(h

1~2

2~4

4

1~2

2

 

Note:

1. Above values are the accumulative typical ones by recognized testing method, but, in order to ensure you to

select our products properly, please refer to above specification and test the samples based on your using purpose

or feel free to contact our engineers for further and better understanding.

2. The color is confirmed by samples.

 

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