1.Features and application
Transparent polyester film, excellent electrical insulation properties, easy for laminating processing, UL certified products. which is mainly applied in areas such as Composite substrate、Id protection、Depending on the diaphragm.
2.Thickness & specification
Standard thickness: 50μm. Other thickness can be customized according to customer's specific requirement.
Specification
Property | Unit | Index | Test method | ||||||||||
Thickness | μm | 75 | 100 | 125 | 150 | 175 | 188 | 200 | 250 | 300 | 350 | ||
Thickness tolerance | % | ±3 | ±3 | ±3 | ±3 | ±4 | ±4 | ±4 | ±5 | ±5 | ±5 | GB/T 13542.2-2009 | |
Tensile strength ≥ | MD | MPa | 160 | 155 | 155 | 150 | 150 | 140 | 140 | 140 | 150 | 140 | |
TD | 170 | 160 | 160 | 160 | 160 | 160 | 150 | 150 | 140 | 130 | |||
Elongation at break ≥ | MD | % | 110 | 100 | 110 | 120 | 120 | 120 | 120 | 130 | 130 | 140 | |
TD | 85 | 90 | 90 | 90 | 90 | 100 | 100 | 100 | 120 | 120 | |||
Heat shrinkage (150℃, 15min) ≤ | MD | % | 1.5 | ||||||||||
TD | 1.0 | ||||||||||||
Light transmittance ≥ | % | 88 | 88 | 88 | 88 | 87 | 87 | 87 | 85 | 85 | 85 | ASTM D 1003 | |
Electrical strength ≥ | V/μm | 115 | 100 | 90 | 85 | 80 | 76 | 70 | 65 | 60 | 55 | GB/T 1408.1-2006 | |
Dissipation Factor (50Hz) ≤ | 3×10-3 | GB/T 1409-2006 | |||||||||||
Relative permittivity (50Hz) | 2.9~3.4 | ||||||||||||
Volume resistivity ≥ | Ω.m | 1.0×1014 | GB/T 1410-2006 | ||||||||||
Note: ① MD is vertical; TD is horizontal. ② Dielectric loss factor, relative permittivity and volume resistivity are subject to type inspection, and other items are subject to delivery inspection. ③ The performance index value of non recommended preferred nominal thickness is obtained by interpolation method. |
3.Storage conditions
Stored in a clean, dry, ventilated place, keep away from fire and heating, avoid direct sunlight.