Polyester film

1. Material: polyester resin. Heat resistance level: E class. 2. Characteristics: Have high dielectric properties. 3. Standard: national standard 4. Usage: Used for composite material, motor groove, interturn insulation and interlayer insulation.
Parameter
No. Properties Unit Vaules Typical Vaules
1 Tensile strength(MD and TD) 25um~100um MPa ≥150 200
100um~250um ≥140 170
>250um ≥110 160
2 Elongation Break(MD and TD) 25um~100um % ≥80 100
100um~350um ≥90 120
3 Thermal Shrinkage(MDand TD) 25um~190um % ≤3.0 1.6
>190um ≤2.0 1.5
4 Power frequency Dielectric Strngth 50HZ V/um Table 2 Table 2
5 Volume Resistivity Ω.m ≥1.0*1014 3.0*1014
6 Relative Dielectric Constant(50HZ) -- 2.9~3.4 3.2
7 Dielectric Dissipation Factor(50HZ) -- ≤3.0*10-3 2.3*10-3
8 Density Kg/m3 6020 6021 6020
1390±10 1400±10 1392
9 Melting point   ≥256 260
10 Surface Resistivity Ω ≥1.0*1013 5.0*1014
11 Electrolytic Ocular Estimate % ≤2 1.4
Corrosion Tensile Strength of metallic wire
12 Dimensional Stability under high temperature When pulling   ≥200 ≥200
Note: Due to continuous product improvement, the dimensions provided in this sample are for reference only. If necessary, our company can design and produce according to user requirements. Please contact the company in time.