POLYESTER FILM
GENERAL DESCRIPTION:
Polyester film is used in cable insulating i.e. for cables wraps in Jelly Filled Cables, Communication Cables, Data transfer, Instrumentation, Power Cables & Submersible Cables. It provides high voltage & electrical isolation characteristics.
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Property General |
Unit |
Test Method |
Typical Values (CHPET) |
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|
Thickness |
Micron |
Polymers |
12 |
15 |
19 |
25 |
30 |
36 |
50 |
75 |
100 |
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|
Yield |
M2/Kg |
Polymers |
59.5 |
47.6 |
37.8 |
31 |
23.8 |
19.8 |
14.3 |
9.5 |
7.14 |
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|
Density |
gm/cc |
ASTM·D·1505 |
1.4 |
1.4 |
1.4 |
1.4 |
14 |
1.4 |
1.4 |
1.4 |
1.4 |
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|
Water Absorption (Max) |
% |
ASTM·D·1505 |
0.8 |
0.8 |
0.8 |
0.8 |
0.8 |
0.8 |
0.8 |
0.8 |
0.8 |
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|
Mechanical |
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|
Tensile Strength |
Kg/cm2 |
ASTM·D·882 |
1800 |
1800 |
1800 |
1800 |
1800 |
1800 |
1800 |
1800 |
1700 |
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|
Elongation (MD/TD) |
% |
ASTM·D·882 |
90 |
90 |
90 |
100 |
100 |
100 |
130 |
140 |
150 |
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|
Slip ((OF) |
ASTM·D-1894 |
0.5 |
0.5 |
0.5 |
0.5 |
0.5 |
0.4 |
0.4 |
0.3 |
0.3 |
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Optical |
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|
Haze |
% |
ASTM·D-I003 |
3.5 |
4 |
4.5 |
5 |
6 |
8 |
10 |
10 |
10 |
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Thermal |
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Shrinkage @150⁰C 30 min |
ASTM·D-1204 |
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|
MD |
% |
2.0 |
1.6 |
1.6 |
1.6 |
1.6 |
1.6 |
1.2 |
1.0 |
1.0 |
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|
TO |
% |
1 |
0.4 |
0.4 |
0.4 |
0.4 |
0.4 |
0.4 |
0.4 |
0.4 |
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|
Melting Point |
⁰C |
DSC |
255 |
255 |
255 |
255 |
255 |
255 |
255 |
255 |
255 |
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|
Electrical |
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Break Down Voltage |
KV |
ASTM-D-149 |
3.5 |
4 |
5 |
5.5 |
6 |
7.0 |
9.5 |
12.5 |
13.5 |
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(2" Brass Electrode) |
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Surface Resistivity |
Ohm |
ASTM-D-257 |
10Ꞌ² |
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Volume Resistivity @ RI |
Ohm cm |
ASTM-D-257 |
10Ꞌ⁶ |
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Dielectric Constant |
ASTM·D-1505 |
2.8 - 4.0 |
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Permitivify |
IEC 250 |
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23°C, 50Hz |
3.26 |
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23°C, I Khz |
3.24 |
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23°C, 10 KHz |
3.21 |
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0°C, 50Hz |
3.26 |
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50°C, 50Hz |
3.27 |
3.27 |
3.27 |
3.27 |
3.26 |
3.27 |
3.27 |
3.27 |
3.27 |
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Dissipation Factor |
IEC 250 |
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|
23°C, 50Hz |
0.002 |
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23°C, 1 KHz |
0.0055 |
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23°C, 10 KHz |
0.011 |
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0⁰C, 50Hz |
0.004 |
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50°C, 50Hz |
0.0015 |
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