No.

Items

Specification

Analysis result

1

Appearance

The surface of the film shall be smooth and free from bubbles, holes, contaminations and other defects, cutting edge tidy, not damaged.

Pass

2

Thickness Nominal, μm

25+14%

25.6+1.3/-1.3

3

Density, kg/m3

1420+20

1426

4

Tensile Strength,

 Mpa(kgf/cm2) ≥

MD ≥140

TD ≥140

MD:190

TD :191

5

Elongation at Rupture, % ≥

MD ≥40

TD ≥40

MD:113

TD :110

6

Shrinkage, (%)

MD ≤0.1(200ºC/392F 2HRS)

TD ≤0.1(200ºC/392F 2HRS)

MD≤:0.09

TD≤ 0.1

7

Dielectric Strength, MV/m ≥

Average Value ≥150

Typical Value ≥100

Average Value:288

Typical Value:258

8

Surface Resistivity,  Ω ≥

20ºC/68F+5≥1.0×10¹³

1.0*10¹⁶

9

Volume Resistivity, Ω.cm ≥

20ºC/68F+5≥1.0×10¹⁵

4.7*10¹³

10

Dielectric Constant, (10⁶H)

48-62HZ≤3.9

2.3

11

Dielectric Tangent, (10⁶H)≤

48-62HZ≤5.0*10^-3

1.7*10^-3

12

Dyne

≥45

≥50