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MG Chemicals 8331S - Silver Conductive Epoxy Adhesive

8331S – Silver Conductive Epoxy Adhesive This electrically conductive paste is a 2-part heat-cured epoxy with a long working time. It is smooth, non-sagging, thixotropic, and bonds well to a wide variety of substrates. This electrically conductive epoxy paste can be used as a solder replacement for bonding heat-sensitive electronic components, or for making conductive connections where soldering is not an option, such as when bonding to glass, soft metals, or plastics. It provides excellent EMI/RFI shielding and is very effective in filling seams between metal plates. 8331S has been formulated to be economical. For a higher fill version that maximizes conductivity, use 8330S. For a shorter working time or room temperature cure, use 8331 or 8331D. For a 1-part alternative use 9410 or 9400. We also offer a full line of thermally conductive electrically insulating epoxy adhesives.

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

Application Area: Printed Electronics

Cure Method: Heat Cure

Compatible Substrates & Surfaces: Glass, Metal, Plastics

Application Method: Injection

Chemical Family: Epoxy & Epoxy Derivatives, Silver & Silver Compounds

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Identification & Functionality

Features & Benefits

Labeling Claims
Key Attributes
  • Creates permanent electrical connections
  • Extended working time
  • Low cure temperature of 65 °C
  • Room temperature storage
  • Long shelf life
  • NASA low outgassing approved

Applications & Uses

Application Area
Application Method
Compatible Substrates & Surfaces
Cure Method
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
  1. Stir each part individually to re-incorporate material that may have separated.
  2. Measure 1.2 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.
Cure Instructions

The product will not cure at room temperature. Cure the adhesive in an oven at one of these time/temperature options:

  • 2 h @ 65 ˚C
  • 1 h @ 80 ˚C
  • 30 min @ 100 ˚C

Properties

Physical Form
Thermal Properties
ValueUnitsTest Method / Conditions
Thermal Conductivity (at 25 ˚C)1.3W/(m·K)
Typical Properties
ValueUnitsTest Method / Conditions
Mix Ratio1:1Volume
Mix Ratio1.2:1Weight
Viscosity (at 25 ˚C)ᴬ950Pa·s
Viscosity (at 25 ˚C)ᴮ6200Pa·s
Working Time4Hours
Cured Properties
ValueUnitsTest Method / Conditions
Compressive Strength65N/mm2
CTE After Tg158ppm/˚C
CTE Prior Tg78ppm/˚C
Glass Transition Temperature (Tg)34˚C
Hardness Shore D60
Lap Shear (Aluminum)7.1N/mm2
Lap Shear (Stainless steel)4.5N/mm2
Outgassing (at 125 ˚C for 24 h)0.4%
Resistivity1.0 x 10⁻³Ω·cm
Service Temperature Range-40 to 150˚C
Tensile Strength14N/mm2
Water Absorption0.1%
Uncured Properties
ValueUnitsTest Method / Conditions
Mixed Density2.42g/mL

Regulatory & Compliance

Chemical Inventories

Packaging & Availability

Packaging Type
Available Packaging
Cat. No. Packaging Net Vol. Net Wt.
8331S-15G 2 Syringe kit 6 mL 14.7 g
8331S-50ML 2 Jar kit 50 mL 123 g
8331S-200ML 2 Can kit 200 mL 491 g

 

Storage & Handling

Shelf Life
3 Years
Storage Details

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.