Polyester Film

Polyester Film

详细说明



Description

POLYESTER FILM is a polyethylene terephtalate based transparent flexible polyester film which

becomes cloudy with increasing thickness.     

                                                                        

Properties

POLYESTER FILM provides the electrical industry with unique design and construction options due to the outstanding balance of its electrical properties in combination with chemical, thermal and physical properties.

The polyester film is characterised by its excellent resistance to moisture and common solvents.

It can be used at temperature of -70ºC to 150ºC. since it does not contain any softening agents, it does not become brittle with age when use in normal conditions.


Application 

According to the manufacturers specification POLYESTER FILM is used in class B (130ºC) systems by numerous manufacturers of electrical motors.  POLYESTER FILM is use as slot insulation, phase insulation and wedges for motors and generators.  POLYESTER FILM is use as core, interlayer and final insulation for transformers, chokes and relays.


Delivery form  

Film thickness range

Width

 KGS/Roll

Colore

0.023mm

1000mm

1270mm

1150mm

550KGS/Roll 

1100KGS/Roll

200KGS/Roll

 

Transparent

Milky White

Hazy color

Black color

White color

0.036mm

0.050mm

0.075mm

0.100mm

0.125mm

0.190mm

0.250mm

0.350mm

 



Technical Value 

Total Thickness

unit

23

36

50

75

100

125

190

250

350

Test Method

Specific weight

g/m2

32

50

70

105

140

175

265

350

480


Tensile Strength

Longitudinal

 

MPa

 

 

210

 

230

190

190

190

180

190

190

190

ASTM

D882

Transversal

MPa

230

260

210

200

200

200

220

299

190

ASTM

D882

Elongation at break

Longitudinal

%

 

130

 

130

 

140

 

140

 

150

 

150

 

190

 

210

 

240

ASTM

D882

Transversal

110

110

120

120

120

130

140

170

200

ASTM

D882

Shrinkage

30 minutes at 150ºC

 

Longitudinal

 

 

%

 

1.3

 

2.0

 

1.2

 

1.1

 

1.1

 

1.1

 

1.3

 

1.3

 

1.3

ASTM

D1204

Transversal

1.0

1.7

1.1

1.0

1.0

1.0

1.3

1.3

1.3

ASTM

D1204

Shrinkage

30 minutes at 250ºC

 

Longitudinal

%

4.0

7.0

2.8

2.5

2.5

2.5

3.5

3.5

3.5

ASTM

D1204

Transversal


3.0

6.5

2.5

2.3

2.3

2.3

3.3

3.3

3.3

ASTM

D1204

Dielectric Strength

kV

44

5

8

10

12

13

17.5

19

20

ASTN

D149

Dielectric Constant

AC 50 Hz, 25ºC


3.3

ASTM

D150

Dielectric Loos factor

AC 50 Hz , 25Cº


0.025

ASTM

D150

Specific volume

Resistance at 25ºC

Ω.cm

1018

ASTM

D227

Specific surface

Resistance

Ω.cm

1016

 

23ºC 30%r.m

Specific surface

Resistance

Ω.cm

1016

23ºC

80% r.m.

 

Any requests,please feel free to contact with us .