Formex TCI

Formex™ TCI (Thermally Conductive Insulation) integrates efficient heat transfer with robust dielectric insulation. With 1W/(m.k) through-plane thermal conductivity and 2-3W/(m.k) in-plane thermal conductivity, Formex TCI effectively facilitates heat dissipation in electronic applications comparing to traditional insulation films. Formex TCI is an ideal insulation solution for applications which require both strong electrical insulation and better heat dissipation such as EV battery cooling plate insulation, power adapter insulation, OBC insulation, inverter insulation and etc.

Formex™ TCI test data:

Formex TCI test data
  • PET insulation film at same thickness, thermal resistance is 2.5 times of Formex TCI
  • Insulation powder thermal resistance is 40% higher than Formex TCI


*Test methods/conditions
Testing standard: GB/T 29313-2012
Testing conditions: 23.6C, 53% R.H
Insulation film thickness: 0.35mm (total thickness includes adhesive layer)
 

In a simulation of dissipating effect, Formex TCI outperforms traditional insulation film in:

  • Lower hot spot temperature.
  • Larger heat dissipation area.
  • Better soaking effect.
Formex TCI excels under high thermal loads, reducing the risk of overheating, prolonging equipment lifespan, and improving overall performance. 
Formex TCI vs Traditional insulation film, dissipation simulating result
Formex TCI test data

The table below presents results from a thermal simulation of EV battery packs, where Formex TCI consistently outperforms traditional insulation powder coating and PET films by reducing temperature elevation and temperature variation among cells. Its superior thermal conductivity and heat spreading capability deliver consistently better performance across all C-rates, making it an ideal choice for demanding thermal management applications.



Formex™ TCI Typical Applications:

Formex TCI test data

Whether for high energy density electronics, demanding EV battery packs, or cloud data centers, Formex TCI sets a new standard in electrical insulation, delivering a robust solution tailored to the challenges of evolving technology.
The typical applications includes but are not limited to the belows:

  • EV battery cooling plate insulation: In a battery pack thermal management simulation, the result shows that by replacing traditional PET insulation film, Fromex TCI can help reduce battery cell temperature by around 10-20℃ under 4C C-rates charging condition, and reduce cell temperature variation by 2-3℃.
  • EV Battery module insulation
  • Power adapter insulation
  • OBC insulation
  • Inverter insulation
Our Values

Formex TCI excels under high thermal loads, reducing the risk of overheating, prolonging equipment lifespan, and imporving overall performance.
In addition to the exceptional thermal conductivity, Formex TCI is easy to apply with adhesive backing, die-cut or 3D thermal-forming. Robust processability enables Formex TCI to be an ideal and simple replacement to traditional insulation films.
It offers a robust solutions to help design engineers to overcome thermal management design challenges.

Technical Specifications

1 W / (m*K)

Thermal Conductivity

120°C  (RTI)

Temperature Rating

VTM-0

UL 94 Flammability Rating

1 kV / mil

Dielectric Strength

PLC 0

Comparative Tracking Index (CTI 600V)

10 / 17 / 30 mils (0.25 / 0.43 / 0.76 mm)

Available in different thickness

Contact us today to understand how Formex TCI could benefit your application.
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