PEEK - DF™
PEEK-Based Dielectric Film Coating System
At Datec, we provide OEMs with a high-performance PEEK-based dielectric film coating system designed to support advanced thermal and electrical insulation requirements. Datec’s PEEK-DF™ is a sprayed and printable applied polymer dielectric coating system that delivers electrical insulation and enhanced thermal conductivity through one or multiple ultra-thin layers, helping replace bulky potting compounds and thermal interface pads while enabling more compact and efficient product designs.
Why PEEK-DF™?
One or multiple ultra-thin dielectric coating layers that simultaneously provide electrical insulation and thermal conductivity, enabling compact and adaptable thermal management solutions.
HIGH DIELECTRIC STRENGTH
Passes 5 kV DC at 65 µm thickness while maintaining strong dielectric insulation performance under high-voltage operation.
ENHANCED THERMAL CONDUCTIVITY
Thermal conductivity currently reaches ≥ 0.6 W/mK, with ongoing material development focused on continuously increasing thermal performance while maintaining dielectric integrity.
LIGHTWEIGHT & SPACE SAVING
Ultra-thin dielectric layers replace thick potting compounds and gap pads, reducing system weight while freeing valuable design space.
EXCELLENT SUBSTRATE ADHESION
Class 5B cross-hatch adhesion (ASTM D3359) on metallic substrates. No adhesive layer required direct bonded coating.
DURABILITY UNDER CYCLING
Validated for 180,000 power on/off cycles with insulation integrity maintained throughout. More than 13,000 hours tested at 170 °C with no failure.
ADAPTABLE COATING COVERAGE
Coating coverage can be adjusted using spray or print application methods to match insulation, geometry, and thermal management requirements.
CHEMICAL AND ENVIRONMENTAL RESISTANCE
PEEK base provides strong resistance to hydraulic fluids, coolants, and industrial chemicals in demanding thermal environments.
FLEXIBLE MANUFACTURING PROCESS
Compatible with both spray and print application methods using manual or automated processes for adaptable manufacturing integration.
PEEK-DF™ is built on a PEEK polymer matrix loaded with thermally conductive ceramic fillers, applied through spray or printing processes as one or multiple thin dielectric layers.
Base polymer — PEEK: PEEK is a high-performance thermoplastic offering strong thermal stability, chemical resistance, and mechanical durability for demanding industrial applications.
Thermally conductive filler system: Ceramic filler particles are dispersed within the PEEK matrix to achieve ≥ 0.6 W/mK while retaining dielectric insulation performance. Ongoing formulation development continues to increase thermal conductivity.
Spray & print application: The coating can be applied through spray or printing processes directly onto metallic substrates without adhesive layers. Spray application supports manual or automated coverage of complex geometries, while printing enables precise and repeatable patterned deposition.
- Cure & bonding mechanism: A controlled thermal cure densifies the coating and forms a robust bond to the substrate with Class 5B adhesion performance.
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Dielectric Strength |
Breakdown voltage testing on metallic substrates |
No dielectric breakdown during testing; 5 kV DC pass at 65 µm coating thickness |
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Insulation Resistance |
Megohmmeter evaluation |
Stable insulation resistance under high-voltage conditions |
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Thermal Conductivity |
C-THERM evaluation methodology |
Current performance ≥ 0.6 W/mK with ongoing development toward higher conductivity |
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Adhesion |
Cross-hatch ASTM D3359 |
Class 5B |
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Thickness Adaptability |
Application process evaluation |
Layer thickness and coating coverage adjustable to application requirements |
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Impact Resistance |
Mechanical impact evaluation |
No cracking or coating delamination observed |
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Power Cycling |
180,000 ON/OFF cycles |
Insulation integrity maintained throughout testing |
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Long-duration Thermal Exposure |
Continuous operation at elevated temperature |
More than 13,000 hours tested at 170 °C with no failure |
Customer Testimonials
Talk to Our Engineering Team to Learn More about our PEEK-DF™
