EPOXY-BASED MATERIAL FOR THERMAL INTERFACES
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- DDP SPECIALTY ELECTRONICS MATERIALS US LLC
- Filing Date
- 2020-10-06
- Publication Date
- 2026-06-03
AI Technical Summary
Existing thermal interface materials (TIM) for battery powered vehicles are either expensive due to the use of high thermal conductivity fillers like boron nitrides or aluminum powders, or require high loadings of less conductive but cheaper alternatives like aluminum trihydroxide (ATH), and lack thermal stability.
A 2-component epoxy-based TIM composition is developed, comprising an epoxy resin and a hardening composition with ATH at 80-95 wt%, and optionally precipitated calcium carbonate, using volume ratios of 1:10 - 10:1, and curing accelerators to achieve thermal conductivity and stability at ambient temperatures.
The epoxy-based TIM composition offers improved thermal stability and conductivity, maintaining mechanical properties under heat aging, with reduced costs and abrasive issues, suitable for battery module cooling in vehicles.