| |
|
Melinex® 238 is a translucent white polyester film used for electical insulation. It has been specially developed for use as an electrical insulation material in rotating electrical machines. It is available in a range of thicknesses between 300 and 1400 gauge. This is a low oligomer film suitable for hermetic motor applications where oligomer extraction needs to be limited.
|
UL Component Registration (RTI = 140/125℃) -
for 300 gauge film (0.075 mm) the RTI is 140℃ (Electrical) and 125℃ (Mechanical - STR)
UL Component Registration (RTI = 140/130℃) -
for 1000 gauge film (0.25 mm) the RTI is 140℃ (Electrical) and 130℃ (Mechanical - STR)
|
| Available Thickness [Gauge] |
|
300; 500; 760; 900; 1000; 1200; 1400
|
|
|
| Property |
Thickness |
Value |
Units |
Test |
|
BARRIER
|
| Water Absorption |
300 - 1400 |
0.55 |
% |
ASTM D570-63 (1972), 1 week at 23℃ |
|
|
|
ELECTRICAL
|
| Breakdown Voltage |
500 |
16 |
kV |
50 Hz continuously increasing at 500 V/sec, 6.3 mm electrodes |
| Breakdown Voltage |
760 |
19 |
kV |
50 Hz continuously increasing at 500 V/sec, 6.3 mm electrodes |
| Breakdown Voltage |
1000 |
23 |
kV |
50 Hz continuously increasing at 500 V/sec, 6.3 mm electrodes |
| Breakdown Voltage |
1400 |
26 |
kV |
50 Hz continuously increasing at 500 V/sec, 6.3 mm electrodes |
| Surface Resistivity |
300 - 1400 |
> 10^13 |
Ohms/sq |
ASTM D257, 500 V DC @ 20℃ 54% RH |
| Volume Resistivity |
300 - 1400 |
10^15 |
log Ohm m |
100 V D.C. @ 25℃ for 100 sec |
|
|
|
PHYSICAL
|
| C.O.F. (static) |
300 - 1400 |
0.30 |
|
ASTM D1894 |
| Density |
300 - 1400 |
1.4 |
g/cc |
ASTM D1505 |
| Elongation at Break MD |
300 - 1400 |
150 |
% |
ASTM D882A |
| Elongation at Break TD |
300 - 1400 |
130 |
% |
ASTM D882A |
| Oligomer Extraction |
300 - 1400 |
0.6 |
% |
24 hours boiling Xylene |
| Tensile Strength MD |
300 - 1400 |
29.9 |
kpsi |
ASTM D882A |
| Tensile Strength TD |
300 - 1400 |
31.3 |
kpsi |
ASTM D882A |
| Yield (nominal) |
500 |
4,000 |
in²/lb |
|
| Yield (nominal) |
760 |
2,600 |
in²/lb |
|
| Yield (nominal) |
1000 |
2,000 |
in²/lb |
|
| Yield (nominal) |
1400 |
1,400 |
in²/lb |
|
|
|
Mylar® Specialty Films U.S. Limited Partnership
3600 Discovery Drive
Chester, VA 23836-6436 USA
Tel: (800) 635-4639
Fax: (804) 530-9867
|
Note: These values are typical performance data for Mylar® Specialty Films' polyester film; they are not intended to be used as design data. We believe this information is the best currently available on the subject. It is offered as a possible helpful suggestion in experimentation you may care to undertake along these lines. It is subject to revision as additional knowledge and experience is gained. Mylar® Specialty Films makes no guarantee of results and assumes no obligation or liability whatsoever in connection with this information. This publication is not a license to operate under, or intended to suggest infringement of, any existing patents.
CAUTION: Do not use in medical applications involving permanent implantation in the human body (Mylar® Specialty Films Medical Policy). For other medical applications, see the Medical Caution Statement. Mylar® Specialty Films accepts no liability for use of it's products in medical applications not reviewed and approved by Mylar® Specialty Films or for product misuse. Mylar® Specialty Films supplies products to an agreed specification and does not manufacture products designed specifically for medical end use.
Melinex®, Mylar® and Melinex® STTM are registered trademarks of Mylar® Specialty Films U.S. Limited Partnership.
|
|
Show Printable Version