6641 Polyester Film/Polyester Fibre
Non-woven Flexible Laminate(F-DMD)
Standard No.: Q/DJ3-207-1999
Polyester film/polyester fibre non-woven flexible laminate (Class F DMD) is made from high melting point polyester film and hot-rolling polyester non-woven fabric. The polyester film and polyester non-woven fabric are bonded by F-class adhesive. It has excellent heat-resistance, electrical, mechanical and impregnated properties. It is suitable for slot insulation, interphase insulation and liner insulation in Class F electric motor and electric apparatus.
1 Technical requirements
1.1 General requirements
As per Chapter 2 of GB 5591.1
1.2 Dimensions
Nominal width: 1000mm Nominal weight: 50kg±5kg
The splices should be no more than 4 in one roll.
1.3 Properties are as shown in Form 1
Form 1
|
No. |
Properties |
Units |
Values |
|||||||||||
|
1 |
Nominal thickness |
mm |
0.15 |
0.18 |
0.20 |
0.23 |
0.25 |
0.30 |
0.35 |
0.40 |
||||
|
2 |
Thickness tolerance |
mm |
±0.020 |
±0.025 |
±0.030 |
±0.030 |
±0.030 |
±0.035 |
±0.040 |
±0.040 |
||||
|
3 |
Grammage |
g/m2 |
150±22 |
190±28 |
210±32 |
240±36 |
260±39 |
310±46 |
390±58 |
440±66 |
||||
|
4 |
Tensile strength |
MD |
No bending |
N/ 10mm |
≥80 |
≥100 |
≥120 |
≥130 |
≥150 |
≥170 |
≥200 |
≥300 |
||
|
After bending |
≥80 |
≥90 |
≥105 |
≥115 |
≥130 |
≥150 |
≥180 |
≥220 |
||||||
|
TD |
No bending |
≥80 |
≥90 |
≥105 |
≥115 |
≥130 |
≥150 |
≥180 |
≥220 |
|||||
|
After bending |
≥70 |
≥80 |
≥95 |
≥100 |
≥120 |
≥130 |
≥160 |
≥200 |
||||||
|
5 |
Elongation |
MD |
% |
≥10 |
≥5 |
|||||||||
|
TD |
≥15 |
≥5 |
||||||||||||
|
6 |
Breakdown voltage (No bending) |
At room temperature |
kV |
≥7.0 |
≥8.0 |
≥9.0 |
≥10.0 |
≥11.0 |
≥13.0 |
≥15.0 |
≥18.0 |
|||
|
155℃±2℃ |
≥6.0 |
≥7.0 |
≥8.0 |
≥9.0 |
≥10.0 |
≥12.0 |
≥14.0 |
≥17.0 |
||||||
|
7 |
Stiffness |
MD |
N |
≥10 |
≥15 |
≥20 |
||||||||
|
TD |
≥15 |
≥20 |
≥30 |
|||||||||||
|
8 |
Bonding property at room temp. |
- |
No delamination |
|||||||||||
|
9 |
Bonding property at 180℃±2℃ 10min |
No delamination, no bubble, no adhesive flow |
||||||||||||
|
10 |
Bonding property after humidity |
- |
No delamination |
|||||||||||
|
11 |
Temperature index |
- |
≥155 |
|||||||||||
2 Testing Methods
As per GB 5591.2-1985
3 Inspection, marks, package, transportation and storage
3.1 Inspection items are as per Clause 1.1, 1.2 and Item 1,2,3,4, 8,9 6 as well as Item 6(at room temperature) of Form 1 in Clause 1.3.
3.2 The other items are as per GB 5591.1-1985.
4 Remarks
Class F DMD has many advantages as the following: cheap price, good flexibility , high mechanical and electrical properties, convenient application; excellent consistency with many impregnating varnish. It is very suitable for using with 1040 impregnating varnish produced by our factory.