Item Name: LOCTITE® ECI 8120
Manufacturer: Henkel
Technologies: Thermoplastic Conductive Ink (Carbon-filled, PTC)
Color: Black paste
Cure Type: Hot air or infrared drying (10 min @ 140°C typical)
Package Size: Contact to Techniq VN for details.
Shelf Life: 12 months
LOCTITE® ECI 8120 is a black, carbon-filled thermoplastic conductive ink formulated as a positive temperature coefficient (PTC) system. It enables the production of low-voltage (<50 V) self-regulating heating elements that maintain a stable temperature of around 105°C without external control. The ink is screen printable, flexible, and compatible with common substrates like PET, PEN, and PI, as well as with silver inks such as LOCTITE® ECI 1010. Its high PTC ratio ensures precise cut-off temperature and reliable safety in printed heating applications.
Self-regulating heating elements on flexible substrates
Printed heating systems for low-voltage devices
Heating foils and films with automatic thermal regulation
Hybrid designs combining carbon PTC ink with silver busbars
Thermal protection layers in electronic assemblies
| Category | Property | Value |
|---|---|---|
| Undried | Technology | Thermoplastic |
| Appearance | Black paste | |
| Filler Type | Carbon | |
| Solid Content (TGA) | 46 % | |
| Density | 1.0 g/cm³ | |
| Viscosity (25°C, shear rate 5 s⁻¹) | 29,000 mPa·s | |
| Thixotropic Index (5/50 s⁻¹) | 6.9 | |
| Theoretical Coverage (10 µm film) | 43 m²/kg | |
| Shelf Life (8–28°C) | 365 days | |
| Operating Temperature (max) | 110 °C | |
| Drying Cycle | 10 min @ 140°C | |
| Dried | Adhesion on PET | Grade 5B (ASTM 3359) |
| Sheet Resistance (25 µm film, 10 min @ 140°C) | 1,600 Ω/sq | |
| PTC Ratio | 15 | |
| Self-Regulation Temperature | ~105 °C |
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Techniq Vietnam provides end-to-end materials and process solutions, integrating world-class technologies in adhesives, soldering, and thermal management.
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