Glass Cloth, NOMEX® y DMD, Epoxi resin impregnated (Pre-Preg)

Glass Cloth, NOMEX® y DMD, Epoxi resin impregnated (Pre-Preg) 2017-07-09T21:37:31+00:00

Glass Cloth, NOMEX® y DMD, Epoxi resin impregnated (Pre-Preg)

Pre-preg glass cloth, impregnated with epoxy novalac resin, permits molding materials which are compliant with a great variety of international standards such as G – 10 and G – 11 ASTM D-709. It is used to produce base plates of printed circuits, wedges and shims for generators, insulating tubes and all kinds of tooling parts which require good F-type mechanical and electrical resistance.

They are impregnated to pre-preg all kinds of cloth, varying their type and weight according to the final product. (fine 180 f/m2 cloth up to roving cloth of 660 g/m2 )

We have recently added vynil-ester resins mainly for anticorrosion applications. The product comes in separate rolls with polyethylene film, of approximately 1-metre width and varying lengths according to product weight (between 25 and 50 meters)

S.M.C. (SHEET MOULDING COMPOUND)

Description

Pre-preg moulding material which is made up of fiberglass and polyester resin together with special filler, moisturizing additives, suface-active colors and catalyzers for its formation under pressure and temperature.

Physical Properties

Unit load of traction rupture

ASTM D638

 900 KG/CM²

Unit load of compression rupture

ASTM D695

 1000 KG/CM²

Unit load of buckling rupture

ASTM D790

700-800 KG/CM²

Impact strength

ASTM D256

20 KG/CM²

Resistivity

DIN 53482

1 X 10 (15)

Dielectric constant (50 Hz)

DIN 53483

5.6

Dissipation factor (800 Hz)

DIN 53483

0.005 – 0.4

Dielectric strength

ASTM D149

10 – 12 KV/MM

Resistance to surface currents

DIN 53480

T 5

Arching resistance

ASTM D495

90 S

Heat Dimensional Stability (Martens)

DIN 53458

130º C

Combustion resistance

DIN 53459

4th Grade

Water absorption at 20ºC

ASTM 570

0.7 %

Units

1200mm wide rolls, 25 to 30m long.