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MG Chemicals 8329TFF - Fast Cure Thermal Adhesive

8329TFF is a 2-part, flame retardant, thermally conductive epoxy adhesive with a 5-minute working time. It is an off white, smooth, thixotropic paste that cures to form a hard, durable polymer that is thermally conductive, yet electrically insulating. This thermal glue is often used to bond heatsinks to CPUs, LEDs and other electronics components. This product has a very short working time. For a longer working time, use 8349TFM or 8329TFS.

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

Application Area: Battery Packs, Electrical Components, LEDs, Power Transformers, Semiconductors

Cure Method: Air Dry, Heat Cure

Compatible Substrates & Surfaces: Ceramic, Glass, Metal, Plastics

Chemical Family: Epoxy & Epoxy Derivatives

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Identification & Functionality

Features & Benefits

Key Attributes
  • High thermal conductivity
  • Flame retardant—UL 94V-0 registered (File # E334302)
  • 1:1 mix ratio
  • Provides strong electrical insulation
  • Low CTE prior Tg
  • High tensile and compressive strength
  • Bonds well to a wide variety of substances
  • Strong resistance to humidity, salt water, mild bases, and aliphatic hydrocarbons

Applications & Uses

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

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

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
8329TFF-25ML N/A N/A
8329TFF-50ML 8DG-50-1-1 8MT-50, 8MT-50-FT

Properties

Physical Form
Thermal Properties
ValueUnitsTest Method / Conditions
Thermal Conductivity (at 25 ˚C)0.8W/(m·K)
Typical Properties
ValueUnitsTest Method / Conditions
Viscosity (at 25 ˚C)ᴬ72Pa·s
Viscosity (at 25 ˚C)ᴮ110Pa·s
Cured Properties
ValueUnitsTest Method / Conditions
Resistivity7.9 x 10¹²Ω·cm
Hardness Shore D82
Tensile Strength13N/mm2
Compressive Strength65N/mm2
Lap Shear (Stainless steel)7.1N/mm2
Lap Shear (Aluminum)8.3N/mm2
Glass Transition Temperature (Tg)25˚C
CTE Prior Tg34ppm/˚C
CTE After Tg146ppm/˚C
Service Temperature Range-40 to 150˚C
Uncured Properties
ValueUnitsTest Method / Conditions
Mixed Density1.63g/mL

Regulatory & Compliance

Chemical Inventories

Technical Details & Test Data

Cure Instructions

Allow to cure at room temperature for 4 hours, or cure the adhesive in an oven at one of these time/ temperature options :

Temperature 65 °C 80 °C
Time 15 minutes 10 minutes
Usage Parameters
Working Time 5 min
Service Cure 5 h @ 22 ˚C
Mix Ratio by Volume 1:1
Mix Ratio by Weight 1:0.9

Packaging & Availability

Packaging Type
Available Packaging
Cat. No. Packaging Net Volume Net Weight
8329TFF-25ML Dual Syringe 25 mL 40.1 g
8329TFF-50ML Dual Cartridge 45 mL 72.3 g

Storage & Handling

Shelf Life
3 Years
Storage

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.