Properties

Unit

3026

3027

3028

Flexural strength perpendicular to lamination 　 　 　 ≥

MPa

110

90

100

Notch impact strength parallel to lamination charpy 　 　 　 　 ≥

KJ/m²

7.0

7.8

6.0

Bonding strength 　 ≥

N

—

—

—

Dielectric strength perpendicular to lamination 　
（in oil 90±2℃）　 ≥

MV/m

0.82

5.1

6.3

Breakdowm voltage parallel to lamination　
（in oil 90±2℃) 　≥

KV

1

18

20

Relative dielectric coefficient 　 　 ≤

—

—

5.5

5.5

Insulation resistance after impregnated in water 　 　 　 　 ≥

Ω

1×10⁶

5×10⁷

5×10⁷

Water absorption
1mm 　 　　≤

mg

206

136

136

Colour

—

natural or black

Reference standard

—

JB/T8149.2-2000

Characteristics & Applications