nhựa Bakelit

Serial number

Properties

Unit

Measured value

 1

     Color

  Red/Black

2

Thermal stability(continuous)

≥

℃

140

3

Thermal stability(short time)

≥

℃

300

 4

   Density

g/cm³

   1.45

5

 Coefficient of linear thermal expansion

Kx

  10

6

Impact strength

≥

KJ/m²

67

7

 Flammability(UL94)

HB

94

8

Flexural strength perpendicular to laminations

≥

MPa

120

9

Compression strength perpendicular to

laminations

≥

MPa

250

10

Tensile strength

≥

MPa

100

11

Adhesive strength

≥

N

3600

12

Insulation Resistance after

impregnated in water

≥

Ω

1.0×10⁸

 13

Dielectric Strength

Perpendicular to Laminations

(in 90±2°C transformer oil,

1mm in thickness)

≥

KV/m

12.1

14

Breakdown voltage parallel

to laminations(in 90±2°C

Transformer oil)

≥

kV

10

15

Permittivity

(1MHz/50Hz)

≤

—

5.5

16

 Volume resistance

Ω x cm

10-7~10-8

17

Surface resistance

  Ω

1023

18

Bibulous rate

≤

—

1.5