6020/6021
6020/6021 Polyester Film for Electrical Insulation
Standard No.: Q/DJ11-101-2000
6020 / 6021 is biaxially oriented polyethelene terephthalate (PET) film.
This product has good dielectrical and high mechanical properties.
1、Technical requirements
1.1 Appearance
The film is supplied in reel form. Its surface should be flat and smooth. The film should be free of defects such as creases, laceration, dents, bubbles, holes, and contaminations. Edges of rolls should show clean cuts.
1.2 Thickness and tolerance
Recommended nominal thickness is as follows:
25μm、50μm、75μm、100μm、125μm、150μm、188μm、200μm、250μm、300μm、350μm。
Special requirements for thickness can be settled upon negotiation.
≤100μm Tolerance ±5%
100μm~300μm Tolerance ±4%
300μm~350μm Tolerance ±6%
1.3 Diameter, width and deviation
Nominal width: 500mm & 1000mm
Special requirements for width can be settled upon negotiation. The film can be supplied in tape. The deviation of diameter and width is as shown in Form 1:
Form 1 The deviation of diameter and width mm
|
Width |
Diameter |
Deviation |
|
|
Width |
Outside diameter of roll |
||
|
8～150 |
180~250 |
±0.5 |
＜0.5 |
|
>150 |
>250 |
±1.0 |
＜1.0 |
1.4 Splices and minimum length
Usually the splices and minimum length are as shown in Form 2.
Form 2 The splices and minimum length
|
Splices |
Weight (Kg) |
Min. length(M) |
|
0 |
≤70 |
-------- |
|
≤1 |
>70 |
≥150 |
The splices and minimum length can be settled upon negotiation between sellers and buyers.
1.5 Physical properties
Physical properties are as shown in Form 3
Form 3 Properties of Film
|
No. |
Properties |
Units |
Values |
|||
|
1 |
Tensile strength (MD and TD) |
25μm～100μm >100μm～190μm >190μm |
MPa |
≥150 ≥140 ≥110 |
||
|
2 |
Elongation at Break (MD and TD) |
25μm～50μm >50μm～350μm |
% |
≥60 ≥80 |
||
|
3 |
Shrinkage (MD and TD) |
25～190μm >190μm |
% |
≤3.0 ≤2.0 |
||
|
4 |
Power Electric Strength 50Hz |
V/μm |
Be as shown in Form 4 |
|||
|
5 |
Volume Resistivity |
Ω·m |
≥1.0×1014 |
|||
|
6 |
Relative Dielectric Constant (50Hz) |
2.9～3.4 |
||||
|
7 |
Dielectric Dissipation Factor (50Hz) |
≤５.0×10-3 |
||||
|
8 |
Density |
kg/m3 |
6020 |
6021 |
||
|
1390±10 |
1400+10-20 |
|||||
|
9 |
Melting Point |
℃ |
≥256 |
|||
|
10 |
Surface Resistivity |
Ω |
≥1.0×101３ |
|||
|
11 |
Electrolytic Corrosion |
Ocular Estimate |
Class |
A1 |
||
|
Metallic Conductivity Tensile Strength Method |
% |
≤2 |
||||
|
12 |
Dimensional stability in high temperature |
With Tension |
℃ |
≥200 |
||
|
With Pressure |
≥200 |
|||||
Form 4 Power Electric Strength of Film (50Hz)
|
Nominal thickness (μm) |
Values (V/μm) |
|
25 |
≥170 |
|
50 |
≥130 |
|
75 |
≥105 |
|
100 |
≥90 |
|
125 |
≥75 |
|
150 |
≥70 |
|
188 |
≥65 |
|
250 |
≥60 |
|
300 |
≥55 |
|
350 |
≥50 |
2 Testing methods
As per Chapter 5 of Standard GB 13950—1992
3 Inspection, marks, package, transportation and storage.
3.1 The product with the same operators, type and specification is defined as a batch.
3.2 Inspecting items are as per 1.1, 1.2, 1.3, 1.4 and Clause 1,2,3,4 of 1.5
3.3 Storage life: 18 months from the date of dispatch
3.4 Other items should be in accordance with GB13950-1992.
4 Remarks
4.1
6020 is a transparent film. 6021 is a milky white film.
4.2 his film is widely suitable for electrical insulation, such as slot insulation, interphase insulation and liner insulation in electric motor, wrapping insulation for coils and cables, as well as producing insulating flexible laminates.
4.3
Avoid creases, scratches, contamination of dust and oil while being slit and/or used.