Technical Data | July 2018
3M™ Thermally Conductive Epoxy Adhesive TC-2810
Product Description
3M™ Thermally Conductive Epoxy Adhesive TC-2810 is a thermally conductive, 2-part epoxy using high performance
filler for good thermal conductivity with high adhesion.
Key Features
•
High adhesive strength
•
Slight tack allows pre-assembly
•
Good surface wet out
•
Low viscosity for potting applications
•
Good gap filling
•
Thin bonding line
•
Good thermal conductivity (0.8-1.4 W/m-K)
•
Low chloride (Cl) ion content and outgassing
Typical Uncured Properties
Note: The following technical information and data should be considered representative or typical only and should not be used for
specification purposes.
3M™ Thermally Conductive Epoxy Adhesive TC-2810
Property
Value
*Viscosity
Base
Accelerator
Mixed
40,000-90,000 cps
11,000-21,000 cps
40,000-80,000 cps
Base Resin
Base
Accelerator
Epoxy
Amine
Filler
Ceramic
24% by weight
Mix Ratio (B:A)
Volume
2:1
Worklife
100-120 minutes at 23°C (72°F)
New Weight Base
(lb/gal)
Accelerator
Mixed
10.58
10.28
10.37
*Viscosity is measured using 40 mm, 2° cone, at 10 S-1.
Applications
•
LED Assembly
•
Thermal fixing battery cell and thermal management for EV/HEV battery
•
Potting applications
•
General gap filling
Application Techniques and Product Use
For bonding rigid to rigid parts, it is suggested that the bond line thickness and edge fill be designed to optimize:
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 between thermal and mechanical properties.
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.
3M™ Thermal Conductive Epoxy TC-2810 is supplied in dual syringe plastic duo-pak cartridges as part of the 3M™ Scotch-Weld™
EPX™ Plus II Applicator. The duo-pak cartridges are supplied in 37ml or 50 ml configuration. To use the cartridge simply insert the
duo-pak cartridge into the EPX Plus II 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 (ie: 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™ Scotch-Weld™ EPX™ Mixing Nozzle to the duo-pak cartridge to ensure
proper and uniform missing 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™ Scotch-Weld™ EPX™ Plus II Applicator and 3M™ Scotch-Weld™ EPX™
Mixing Nozzle
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 specification purposes. Final product specifications and testing methods will be outlined in the products
Certificate of Analysis (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-2810
Property
Value
Color
Cream
Glass Transition Temperature
See Chart on page 3
Thermal Coefficient of Expansion
85 X 10 -6/K (below Tg)
240 X10 -6/K (above Tg)
Thermal Conductivity
0.80-1.4 W/m-K
Volume Resistivity
1.5 x 1014 ohm-cm
Dielectric Breakdown Voltage
44.0 kV/mm (1119 Volts/mil)
Dielectric Constant
4.1
Total Outgassing
<1000 µg/g (GC/MS, 85 C/3
hours)
Siloxane Outgassing
<5 µg/g (GC/MS, 85C/3 hours)
Extractable Chloride
<30 µg/g (hexane extraction)
*Methods listed as ASTM are tested in accordance with the ASTM method noted
*Disclaimer if applicable to chart above
Curing
Cure Schedule: 23°C/24 hours
50°C/270 minutes
70°C/90 minutes
90°C/30 minutes
120°C/10 minutes
Please contact 3M Application Engineers for more data on curing conditions.
Typical Shear Strength, Peel Strength, Tg vs Cure Temperature/Time
Note: The following technical information and data should be considered representative or typical only and should not be
used for specification purposes. Final product specifications and testing methods will be outlined in the products
Certificate of Analysis (COA) that is shipped with the commercialized product once it is approved by 3M for general
commercialization and development work is completed.
*Methods listed as ASTM are tested in accordance with the ASTM method noted
*Disclaimer if applicable to chart above
Storage and Shelf Life
The shelf life of 3M™ Thermally Conductive Epoxy Adhesive TC-2810 is 12 months from the date of manufacture when
stored in original cartons at 21° C (70° F) and 50% relative humidity
Certificate of Analysis (COA)
The 3M Certificate of Analysis (COA) for this product is established when the product is commercially available from
3M. The commercially available product will have a COA specification established. The COA contains the 3M
specifications and test methods for the products performance limits that the product will be supplied against. The 3M
product is supplied to 3M COA test specifications and the COA test methods. Contact your local 3M representative for
this product’s COA.
Final product specifications and testing methods will be outlined in the products Certificate of Analysis (COA) that is
provided once the product is approved by 3M for general commercialization and development work is completed.
Safety Data Sheet: Consult Safety Data Sheet before use.
Technical Information: The technical information, recommendations and other statements contained in this document are based
upon tests or experience that 3M believes are reliable, but the accuracy or completeness of such information is not guaranteed.
Product Use: Many factors beyond 3M’s control and uniquely within user’s knowledge and control can affect the use and
performance of a 3M product in a particular application. Given the variety of factors that can affect the use and performance of a
3M product, user is solely responsible for evaluating the 3M product and determining whether it is fit for a particular purpose and
suitable for user’s method of application.
3M™ Thermally Conductive Epoxy Adhesive TC-2810
23° C (72 °F) 24 hours
90 °C (194 °F) 30 minutes
120 °C (248 °F) 10 minutes
Overlap Shear N/mm2 (psi)
(ASTM D-1002)*
18.62 (2700)
18.62 (2700)
18.62 (2700)
T-Peel (piw)
(ASTM D-1876)
7
7
7
Shore D Hardness
(ASTM D2240)
75
80
80
Tg (°C)
(ASTM E-1356)
60
73
64
Warranty, Limited Remedy, and Disclaimer:
Unless an additional warranty is specifically stated on the applicable 3M product packaging or product literature, 3M warrants that
each 3M product meets the applicable 3M product specification at the time 3M ships the product. 3M MAKES NO OTHER
WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR
CONDITION OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY OR CONDITION
ARISING OUT OF A COURSE OF DEALING, CUSTOM OR USAGE OF TRADE. If the 3M product does not conform to this warranty,
then the sole and exclusive remedy is, at 3M’s option, replacement of the 3M product or refund of the purchase price.
Limitation of Liability: Except where prohibited by law, 3M will not be liable for any loss or damage arising from the 3M product,
whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted, including warranty, contract,
negligence or strict liability.
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3M Center, Building 224-3N-11
St. Paul, MN 55144-1000
1-800-251-8634 phone
651-778-4244 fax
www.3M.com/electronics
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