Polyimide Film

polyimide film Thickness:0.025mm Width:8mm-1000mm Length:1000m

Polyimide film (tape)  6051

Standard No.: JB/T 2726-1996

I.    Technological requirement:

1.  Appearance: Film surface is smooth, bright and clean. It shall have no defects, such as folding, tearing, particulate, air bubble, pinhole and any external impurity. Its edges shall be orderly and have no breakage. And the film is provided in rolls.

2.  Dimension1) Thickness and allowable deviation: see the recommended thickness in Table One. The products with other thickness can be supplied according to the requirements of customer.

Table One

                                                                                                                                                     Unit: μm

Standard Thickness	25μm	40μm	50μm	75μm	100μm	125μm	175μm	200μm
Allowable Deviation	+2.5	+4	+5	+7.5	+8	+8	+8	+8
	-2.5	-4	-5	-7.5	-7	-8	-8	-8

   2) Width and length: supplied according to requirements of customer

   3) Performances shall conform to the stipulations in Table Two

Table Two

No.

Index Description

Unit

Index Value

25μm

40 μm

50 μm

75 μm

100 μm

125 μm

175 μm

200 μm

1

Density

kg/m3

1420±20

2

Tensile strength

Longitudinal Transverse

MPa

≥150 ≥130

≥≥135 ≥115

3

Elongation

Longitudinal Transverse

%

≥60

4

Heat contraction rate, 150°C 400°C

%

≤1.0 ≤3.0

5

Electrical operating frequency intensity

Averagevalue

MV/m

≥150

≥120

Specific value

≥100

≥80

6

Surface resistivity at ,200°C

Ω

≥1.0X1013

7

Volume resistivity at ,200°C

Ω·m

≥1.0X1010

8

Relative Dielectric Constant ,48-62Hz

—

3.5±0.4

9

Dielectric Loss Factor 48-62Hz

—

≤4.0X10-3

10

Long-term heat-resistance  temperature index

—

≥180

 II. Packing, mark, storage and transportationThe film shall be provided in rolls and wound around pipe core, each roll is well packed and sealed with plastic bag to be placed into dry and clean box.

Polyimide Film