SynTherm® – Insulating Materials SynTherm® H (Polyimide film)

SynTherm® H is a polyimide film manufactured with the raw materials of pyromellitic dianhydride and 4.4-diaminodiphenyl ether synthetic resin.

SynTherm® H offers a unique combination of properties at the highest level, which are recommended for many applications in numerous branches. SynTherm® H sustains it's excellent physical, electrical and mechanical properties within a wide temperature range. For short time it is also applicable for temperatures from -269 °C to +400 °C and it is used in systems of class H. It has low flamability, is self-extinguishing and has no melting point. SynTherm® H offers a high chemical resistance - an organic solvent is unknown up to now. It has also a high resistance to beta and gamma radiation.

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Application

SynTherm® H is especially for applications with high operating temperatures for which other films are not applicable.

Standards

  • UL listed(E358562), UL 94 V-0, UL RTI >200 °C
  • RoHS compliant according to 2011/65/EU

Delivery forms

Film thickness in µm:
25, 50, 75, 100, 125, 150, 175, 200

SynTherm® H can be supplied:

  • in slit rolls from widths of 6 mm (depending on thickness)
  • in rolls approx. width 500 mm up to 1000 mm


Feathering:

  • depth approx. 1 - 12 mm, distance approx. 1 - 10 mm
  • from widths of 10 to 240 mm and thickness on request

Base

Pyromellitic dianhydride and 4.4-diaminodiphenyl ether synthetic resin

Technical data

Typical mechanical properties
Property Unit of measure
Nominal thickness µm 25 40 50 75 100 125 150 175 200
Thickness tolerance µm ±2.5 ±4 ±5 +7.5/-6 +8/-7 ±8 ±8 ±8 ±8
Density g/cm³ 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42 1.42
Shrinkage at 150 °C % 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
Tensile strength longitudinal MPa ≥150 ≥150 ≥150 ≥150 ≥150 ≥150 ≥135 ≥135 ≥135
Tensile strength transversal MPa ≥130 ≥130 ≥130 ≥130 ≥130 ≥130 ≥115 ≥115 ≥115
Elongation at break longitudinal % ≥60 ≥60 ≥60 ≥60 ≥60 ≥60 ≥60 ≥60 ≥60
Elongation at break transversal % ≥60 ≥60 ≥60 ≥60 ≥60 ≥60 ≥60 ≥60 ≥60
Typical electrical properties
Property Unit of measure
Nominal thickness μm 25 40 50 75 100 125 150 175 200
Dielectric strength short term AC kV/mm ≥150 ≥150 ≥150 ≥150 ≥150 ≥150 ≥120 ≥120 ≥110
Specific surface resistivity Ω/m ≥1x10^13 ≥1x10^13 ≥1x10^13 ≥1x10^13 ≥1x10^13 ≥1x10^13 ≥1x10^13 ≥1x10^13 ≥1x10^13
Volume resistivity Ω x m ≥1x10^10 ≥1x10^10 ≥1x10^10 ≥1x10^10 ≥1x10^10 ≥1x10^10 ≥1x10^10 ≥1x10^10 ≥1x10^10
Dielectric constant (AC 50 Hz, 25 °C) 3.5±0.4 3.5±0.4 3.5±0.4 3.5±0.4 3.5±0.4 3.5±0.4 3.5±0.4 3.5±0.4 3.5±0.4
Dielectric loss factor (AC 50 Hz, 25 °C) 10^-3 10^-3 10^-3 10^-3 10^-3 10^-3 10^-3 10^-3 10^-3