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MG Chemicals 832HT - High Temperature Epoxy

High Temperature Epoxy, Encapsulating & Potting Compound 832HT is a general purpose, rigid, black, 2-part high temperature epoxy that provides extreme environmental, mechanical and physical protection for printed circuit boards and electronic assemblies. It is useful when extreme physical strength and chemical resistance are required. It also provides excellent electrical insulation and protects components from static discharge, vibration, abrasion, thermal shock, environmental humidity, salt water, fungus, and many harsh chemicals.

Product Type: 2K (2 component) Sealant, Epoxy Sealant, Potting Compound

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

Chemical Family: Epoxy & Epoxy Derivatives

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Knowde Enhanced TDS

Identification & Functionality

Features & Benefits

Labeling Claims
Features & Benefits
  • 1.6A:1B volume mix ratio
  • Extremely high compressive and tensile strength
  • Excellent adhesion to a wide variety of substrates including metals, composites, glass, ceramics, and many plastics
  • Excellent electrical insulating characteristics
  • Very broad service temperature range of -40 to 225 °C
  • Extreme resistance to water and humidity
  • Solvent-free
Recommended Preparation
Clean the substrate with Isopropyl Alcohol, MG #824, so the surface is free of oils, dust, and other residues.

Applications & Uses

Compatible Substrates & Surfaces

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Mix Ratio2:1Weight
Mix Ratio1.6:1Volume
Working Time1h
Cured Properties
ValueUnitsTest Method / Conditions
Breakdown Voltagemin. 50,000V
Compressive Strength132N/mm2
CTE (After Tg)152ppm/˚C
CTE (Prior Tg)86ppm/˚C
Dielectric Constant (at 1 MHz)2.8
Dielectric Strength470V/mil
Dissipation Factor (at 1 MHz)0.01
Glass Transition Temperature (Tg)89°C
Hardness D87
Intermittent Temperature250˚C
Lap Shear (Aluminum)7.4N/mm2
Lap Shear (Stainless Steel)15N/mm2
Resistivity1.0 x 10¹³Ω·cm
Service Temperature Range-40 to 225˚C
Tensile Strength48N/mm2
Thermal Conductivity (at 25˚C)0.3W/(m·K)
Uncured Properties
ValueUnitsTest Method / Conditions
Mixed Density1.1g/mL
Viscosity (at 25 ˚C) ⁽ᵃ⁾46Pa·s
Viscosity (at 25 ˚C) ⁽ᵇ⁾6.6Pa·s
Cure Instructions

Allow to cure at room temperature for 24 hours, or cure in an oven at one of these time/temperature options:

Temperature 65 °C 80 °C 100 °C
Time 1 h 30 min 15 min

 

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Mixing
  1. Scrape settled material free from the bottom and sides of the part A container; stir the contents until homogenous. Use a paint shaker if available.
  2. Measure 2 parts by volume of the part A and pour into the mixing container. Ensure all contents are transferred by scraping the container.
  3. Measure 1 part by volume of the part B and pour into the mixing container. Ensure all contents are transferred by scraping the container.
  4. Thoroughly and gently mix parts A and B together. Avoid introducing air bubbles.
  5. To de-air, let sit for 15 minutes or put in a vacuum chamber at 25 inHg for 2 minutes.
  6. If bubbles are present at the top, break them gently with the mixing paddle.
  7. Pour the mixture into a container holding the components to be protected.
  8. Close the part A and B containers tightly between uses to prevent skinning.
Viscosity vs. Temperature

MG Chemicals 832HT - High Temperature Epoxy - Viscosity Vs. Temperature

Packaging & Availability

Packaging Type
Available Packaging
Cat. No. Packaging Net Vol. Net Wt.
832HT-375ML 2 Bottle kit 340 mL 376 g
832HT-3L 3 Can kit 2.3 L 2.54 kg

Storage & Handling

Shelf Life
5 Years
Storage and Handling
Store between 16 and 27 ˚C in a dry area, away from sunlight (see SDS).