1. DESCRIPTION
6641 Polyester Film/Polyester Fiber non-woven Fabric composite (F-DMD) is made from one layer of high melting point film and two layers of hot rolling polyester fiber non-woven fabric. The three layers of flexible insulation are bonded by class F adhesive glue.
2. FEATURES
Thermal class F (155°C)
Excellent dielectric properties and mechanical tensile strength
Excellent absorption of impregnating and trickle resins
3. APPLICATIONS
Used as primary insulation for Class F applications in the electrical industry, in particular as slot insulation, phase barrier and interturn insulation for motors and transformers.
4.
TECHNICAL PARAMETER
Item
Unit
Normal
value
Normal
thickness
mm
0.15
0.18
0.20
0.23
0.25
0.30
0.35
0.40
Thickness
tolerance
mm
±0.020
±0.025
±0.030
±0.030
±0.030
±0.035
±0.040
±0.040
Density
g/m2
150±22
190±28
210±32
240±36
260±39
310±46
390±58
440±66
Tensile
strength
MD
N/10mm
≥80
≥100
≥120
≥130
≥150
≥170
≥200
≥300
TD
≥80
≥90
≥105
≥115
≥130
≥150
≥180
≥220
Breakdown
voltage
At room temp.
kv
≥7.0
≥6.0
≥8.0
≥7.0
≥9.0
≥8.0
≥10.0
≥9.0
≥11.0
≥10.0
≥13.0
≥12.0
≥15.0
≥14.0
≥18.0≥17.0
155±2℃
