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MG Chemicals 8329TCS - Thermal Adhesive, High TC

8329TCS is a 2-part, heat-cure, thermally conductive epoxy adhesive with a 4-hour working time. 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 used to glue heat sinks to LEDs, CPUs and other heat-generating components. 8329TCS has been designed for maximum thermal conductivity. It is highly viscous and must be mixed by hand prior to application. For a lower viscosity, use 8329TFS. For a shorter working time, use 8329TCM.

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

Application Area: Automotive Lighting, Battery Packs, Electrical Components, Heat Sink, Heat Spreader, LEDs, Power Transformers, Semiconductors

Cure Method: Air Dry, Heat Cure

Chemical Family: Epoxy & Epoxy Derivatives

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Knowde Enhanced TDS

Identification & Functionality

Features & Benefits

Key Attributes
  • High thermal conductivity
  • 1:1 mix ratio
  • Provides strong electrical insulation
  • High tensile strength
  • Bonds well to a wide variety of substances
  • Strong resistance to humidity, salt water, mild bases, and aliphatic hydrocarbons

Applications & Uses

Recommended Preparation

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

Syringe

  1. Twist and remove the cap from the syringe. Do not discard cap.
  2. Measure 1 part by volume of A.
  3. Measure 1 part by volume of B.
  4. 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. Replace the cap on the syringe.

Can or Jar

  1. Stir each part individually to re-incorporate material that may have separated during storage.
  2. Measure 0.95 part by weight of A.
  3. Measure 1 part by weight of B.
  4. Thoroughly mix parts A and B together.
  5. Apply adhesive to the application area.

Properties

Physical Form
Thermal Properties
ValueUnitsTest Method / Conditions
Thermal Conductivity (at 25 ˚C)1.4W/(m·K)
Typical Properties
ValueUnitsTest Method / Conditions
Viscosity (at 25 ˚C)ᴬ970Pa·s
Viscosity (at 25 ˚C)ᴮ2000Pa·s
Cured Properties
ValueUnitsTest Method / Conditions
Resistivity2 x 10¹³Ω·cm
Hardness Shore D62
Tensile Strength11N/mm2
Compressive Strength43N/mm2
Lap Shear (Stainless steel)4.7N/mm2
Lap Shear (Aluminum)4.4N/mm2
Glass Transition Temperature (Tg)8.8˚C
CTE Prior Tg36ppm/˚C
CTE After Tg173ppm/˚C
Service Temperature Range-40 to 150˚C
Uncured Properties
ValueUnitsTest Method / Conditions
Mixed Density2.27g/mL

Regulatory & Compliance

Chemical Inventories

Technical Details & Test Data

Cure Instructions

This product cures only at an elevated temperature, as per one of these time/temperature options:

Temperature 65 °C 80 °C 100 °C
Time 1 hour 1 hour 20 minutes
Usage Parameters
Working Time 4 h
Mix Ratio by Volume 1:1
Mix Ratio by Weight 0.95:1

Packaging & Availability

Packaging Type
Packaging and Supporting Products
Cat. No. Packaging Net Volume Net Weight
8329TCS-6ML 2 Syringe Kit 6 mL 13.8 g
8329TCS-50ML 2 Jar Kit 50 mL 116 g
8329TCS-200ML 2 Can Kit 200 mL 465 g

Storage & Handling

Shelf Life
3 Years
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.