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EM 6
Garfilm EM 6 is a Milky White Film specially developed as an insulating material for rotating electrical machines, exhibits superior thermal ageing performance compared to normal polyester films.


Sr.No.

Property

Unit

Test Method

Typical Values

            General

1

Thickness

Micron

GPL Method

125

190

250

350

2

Yield

M2/Kg

GPL Method

5.71

3.76

2.86

2.04

3

Density

gm/cc

ASTM-D-1505

1.4

1.4

1.4

1.4

4

Water Absorption ( Max)

%

ASTM-D-570

0.6

0.6

0.6

0.6

5

Oligomer Extraction

%

GPL Method

1.5

1.5

1.5

1.5

            Mechanical

1

Tensile Strength at break (MD/TD)

Kg/cm2

ASTM-D-882

1800

1800

1800

1600

2

Elongation ( MD / TD )

%

ASTM-D-882

150

150

150

150

3

Slip(COF)

--

ASTM-D-1894

0.3

0.3

0.3

0.3

            Optical

1

Haze

%

ASTM-D-1003

70

80

88

94

            Thermal

1

Shrinkage @ 150 ° C 30 min

 

ASTM-D-1204

       
 

MD

%  

1

1

1

1

 

TD

%  

0.4

0.4

0.4

0.4

2

Shrinkage @ 200oC 30 min

%

ASTM-D-1204

       
  MD ( Max )
TD ( Max )
%
%
 

7
7

 

7
7

 

7
7

 

7
7

 

3

Melting point

°C

DSC

255

255

255

255

4

Specific Heat @ 25 °C

cal/gm°C

 

  0.32

 

5

Coeff of Thermal Expansion
between 20° C & 50 ° C

 

1/K(cm/cm °C)
1/K(cm/cm°C)

 

 

36 X 10-6(MD)
23 X 10-6(TD)

            Electrical

1

Break Down Voltage
( on 2" Brass electrod )

 

KV

ASTM-D-149

15.5

18.0

19.5

22.5

2

Surface Resistivity

Ohm

ASTM-D-257

10 12

10 12

10 12

10 12

3

Volume Resistivity

Ohm cm

ASTM-D-257

10 16

10 16

10 16

10 16

4

Dielectric Constant

--

ASTM-D-150

2.8 to 4

5

Permittivity
23°C,50Hz
23°C,1kHz
23°C,10kHz
0°C,50Hz
50°C,50Hz
100°C,50 Hz
150°C,50Hz

 

--

IEC 250


3.26
3.24
3.21
3.26
3.27
3.35
3.65
 

Dissipation Factor
23°C,50Hz
23°C,1kHz
23°C,10kHz
0°C,50Hz
50°C,50Hz
100°C,50 Hz
150°C,50Hz

 

--

IEC 250



0.002
0.0055
0.011
0.004
0.0015
0.007
0.006


            Chemical Resistance
 

Dilute Acids & Alkalis
Concentrated Alkalis
Concentrated Hydrochloric Acid
Concentrated Sulphuric Acid
Greases,Oils & Fats
Organic Solvents,Alcohols, & Hydrocarbons
Ketones,Esters & Chlorinated Compounds
Phenols,Cresols & Chlorinated Phenols.

 

Good
Poor
Fair
Poor
Good
Good
Fairly Good
Poor

 

            Roll

1

Width - Max

mm

GPL method

1850

1850

1850

1525

2

Standard Length - Min

Mtrs

GPL Method

300

200

150

110

3

Standard Length - Max

Mtrs

GPL Method

2400

1600

1200

880

            Pancake

1

Width - Min

mm

GPL Mehtod

11

11

11

11

2

Width - Max

mm

GPL Method

150

150

150

150

3

Standard Length - Min

Mtrs

GPL Method

300

200

150

110

4

Standard Length - Max

Mtrs

GPL Method

1200

800

600

440


MD - Machine Direction
TD - Transverse Direction
 
The foregoing data have been obtained using standard test procedures on defined specimens. The results should therefore only be regarded as a general guide to material properties and not as design data.
 
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