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MG Chemicals 8349TFM - Thermal Adhesive

Thermal Adhesive 8349TFM is a 2-part, flame retardant, thermally conductive epoxy adhesives. It is a dark gray, smooth, thixotropic paste that cures to form a hard, durable polymer that is thermally conductive, yet electrically insulating. This thermal adhesive is most often used to bond heatsinks to CPUs, LEDs and other electronics components. For a shorter working time, use 8329TFF. For a longer working time, use 8329TFS.

Product Type: 2K (2 component) Adhesive, Conductive Adhesive

Application Area: Printed Electronics

Cure Method: Air Dry, Heat Cure

Compatible Substrates & Surfaces: Metal, Plastics

Chemical Family: Epoxy & Epoxy Derivatives

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Knowde Enhanced TDS

Identification & Functionality

Features & Benefits

Labeling Claims
Key Attributes
  • High thermal conductivity
  • Flame retardant – meet UL 94V-0
  • 1:1 mix ratio
  • Provides strong electrical insulation
  • Excellent compressive and tensile strength
  • Bonds well to a wide variety of substances
  • Strong resistance to humidity, salt water, mild
  • bases, and aliphatic hydrocarbons
  • SVHC-free

Applications & Uses

Application Area
Compatible Substrates & Surfaces
Recommended Preparation

Clean the substrate with Isopropyl Alcohol, MG #824, so the surface is free of oils, dust, and other residues.

Syringe or Cartridge

1. Twist and remove the cap from the syringe or cartridge. Do not discard cap.
2. Dispense a small amount to ensure even flow of both parts. A manual or pneumatic dispensing gun is required for a 50 mL cartridge.
3. (Optional) Attach a static mixer.
a. Dispense and discard 3 to 5 mL of the product to ensure a homogeneous mixture.
b. After use, dispose of static mixer.
4. Without a static mixer, dispense material on a mixing surface or container, and thoroughly mix parts A and B together.
5. To stop the flow, pull back on the plunger.
6. Clean nozzle to prevent contamination and material buildup.
7. Re-place the cap on the syringe or cartridge.

Properties

Color
Physical Form
Thermal Properties
ValueUnitsTest Method / Conditions
Thermal Conductivity (at 25 ˚C)1.1W/(m·K)
Typical Properties
ValueUnitsTest Method / Conditions
Mix Ratio1:1Volume
Mix Ratio1:1Weight
Service Cure90Minutes
Viscosity (at 25 ˚C)ᴬ143Pa·s
Viscosity (at 25 ˚C)ᴮ1400Pa·s
Working Time20Minutes
Cured Properties
ValueUnitsTest Method / Conditions
Compressive Strength125N/mm2
CTE After Tg155ppm/˚C
CTE Prior Tg32ppm/˚C
Glass Transition Temperature (Tg)39˚C
Hardness Shore D88
Lap Shear (Aluminum)4N/mm2
Lap Shear (Stainless steel)6.4N/mm2
Resistivity1.2 x 10¹²Ω·cm
Service Temperature Range-50 to 165˚C
Tensile Strength29N/mm2
Uncured Properties
ValueUnitsTest Method / Conditions
Mixed Density1.74g/mL
Cure Instructions

Allow to cure at room temperature for 16 hours, or cure the adhesive in an oven at one of these time/temperature options:

Temperature 65 °C 80 °C
Time 20 minutes 10 minutes

 

Regulatory & Compliance

Chemical Inventories

Packaging & Availability

Packaging Type
Available Packaging
Cat. No. Packaging Net Vol. Net Wt.
8349TFM-25ML Dual Syringe 25 mL 44.6 g
8349TFM-50ML Dual Cartridge 46 mL 82.0 g

 

Dispensing Accessories

Consult the table below for accessory selection. See the Dispensing Accessories Application Guide for usage instructions. 8MT-50-FT should only be used with a pneumatic dispenser.

Cat. No. Dispensing Gun Static Mixer
8349TFM-25ML N/A N/A
8349TFM-50ML 8DG-50-1-1 8MT-50

Storage & Handling

Storage and Handling
Store between 16 and 27 ˚C in a dry area, away from sunlight (see SDS). To maximize shelf life, recap product firmly when not in use.