3M TC-2810
Harmonization Code : 3214.10.00 | Putty and other mastics | Resin cements, caulking compounds and other mastics
Main features
- Thermally Conductive Insulation
- Extended Assembly Work Life
- Pre-Assembly Tack and Gap Fill
Product Description
3M Thermally Conductive Epoxy Adhesive TC-2810 is a two-part boron-nitride-filled epoxy adhesive for thermally conductive, electrically insulating bonding. The 2:1 by-volume mix provides a typical 100 to 120 minute work life at 23 deg C and slight tack for pre-assembly. Mixed viscosity is 40,000 to 80,000 cP, supporting gap filling, potting, and thin bondline application. Typical cured thermal conductivity is 0.80 to 1.4 W/(m K), with volume resistivity of 1.5 x 10^14 ohm cm. Multiple ambient and heat-cure schedules allow the process to be matched to the assembly.
Key features
- Thermally conductive insulation: Ceramic filler combines a typical 0.80 to 1.4 W/(m K) cured value with electrical insulation.
- Extended assembly work life: A typical 100 to 120 minute window at 23 deg C supports placement and pre-assembly.
- Gap filling with pre-assembly tack: Mixed flow supports potting and thin bondlines, while slight tack holds parts before cure.
Applications
Applications include LED assembly, electrically insulating thermal bonding, potting, and general gap filling.
Technical Specifications
Physical Properties
General Properties
Additional Information
As-supplied / before-processing properties
Viscosity values are typical and remain separated by base, accelerator, and mixed state.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Base viscosity | 40,000 to 90,000 | cP | 40 mm, 2 deg cone at 10 s^-1 |
| Accelerator viscosity | 11,000 to 21,000 | cP | 40 mm, 2 deg cone at 10 s^-1 |
| Mixed viscosity | 40,000 to 80,000 | cP | 40 mm, 2 deg cone at 10 s^-1 |
| Ceramic filler content | 24 | wt% | As supplied |
| Mix ratio, B:A | 2:1 | by volume | Two-part system |
| Work life | 100 to 120 | minutes | 23 deg C |
After-processing / final-state properties
Cured values are typical and depend on the stated method and cure schedule.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Thermal conductivity | 0.80 to 1.4 | W/(m K) | ASTM D5470; cured material |
| Volume resistivity | 1.5 x 10^14 | ohm cm | ASTM D257 |
| Dielectric breakdown voltage | 44.0 | kV/mm | ASTM D149 |
| Dielectric constant | 4.1 | ASTM D150 | |
| Overlap shear strength | 18.62 | N/mm^2 | ASTM D1002; 23 deg C/24 h, 90 deg C/30 min, or 120 deg C/10 min cure |
| Shore D hardness | 75 / 80 / 80 | ASTM D2240; same three cure schedules in listed order |
