3M™ Thermally Conductive Epoxy TC-2707

1. Bond Strength

2. Thermal Resistance

A typical suggested bond line is in the 3-7 mil (0.076- 0.018mm) thickness range,

For improved thermal performance (lower Thermal Resistance), a thinner bond line is suggested. A thinner bond line

can reduce the bond strength, so each application needs to be tested to find correct balance

Bond Line Thickness vs Thermal Resistance vs Bond Strength

A “fillet” at the edge of a bond line is suggested to increase bond strength. The fillets are formed as the epoxy squeezes

out past the side edges. Fillets can add strength to the assembly.

3™ Thermal Conductive Epoxy TC-2707 is supplied in dual syringe plastic duo-pak cartridges as part of the 3™ EPX™

Plus II Applicator System. The duo-pak cartridges are supplied in a 37 or 50 ml configuration. To use the cartridge

simply insert the duo-pak cartridge into the EPX applicator and start the plunger into the cylinders using light pressure

on the trigger. Next, remove the duo-pak cartridge cap and expel and discard a small amount of adhesive to be sure

both sides of the duo-pak cartridge are flowing evenly and freely (i.e.: no voids, “plugs of adhesive”, dis-continuity in

flow, etc.) Once even side to side and uniform flow from both sides of the duo-pak is confirmed, attach the 3M EPX

mixing nozzle to the duo-pak cartridge to ensure proper and uniform mixing of the Part A and Part B and begin

dispensing the adhesive.

Partially used cartridges must follow the above use instructions to ensure consistent product performance.

Complete and uniform mixing as noted above of the two components is required to obtain consistent product

performance.

3M™ EPX™ Plus II Applicator Mix Nozzles

Use only 3M™ EPX™ Plus II Applicator and Mix Nozzles to ensure optimum product performance.

Typical Cured Physical Properties and Performance Characteristics

Note:

The following technical information and data should be considered representative or typical only and should not be used for

(COA) that is shipped with the commercialized product once it is approved by 3M for general commercialization and development

work is completed.

3M™ Thermally Conductive Epoxy Adhesive TC-2707

Property

Method*

Value

Color

Gray

Shore D Hardness

ASTM D2240

80

Glass Transition Temperature

ASTM 1356

See Chart on page 3

Thermal Coefficient of Expansion

ASTM E831

Thermal Conductivity

ASTM D5470

0.72 W/m-K

Thermal Impedance

ASTM D5470

3.51X 10-5 m°K/W (1 mil)