Black Epoxy

832B

Description
Technical Data
MSDS
Usage Instructions
Resources

ATTENTION Mixing ratio for this product is 2 parts A to 1 part of B. Please be advised that there is a misprint on our label for one of the production runs.

Protects sensitive electronic components from impact, shock, vibration, heat, conductivity, moisture, chemicals, and visual inspection.

Features

Non-porous, water and chemical resistant
Extremely impact resistant (contains a form of nylon)
Colored black, to prevent visual inspection
Affords high security, once cured, extremely difficult to remove
Non-conductive, an electrical insulator
Low toxicity
Easy and simple to mix
Long pot life
Can be cured in one hour at 65°C (150°F)
This product is RoHS compliant

Available Sizes

Catalog Number	Sizes Available	Description
832B-375ML	375ml (12 oz)	Liquid
832B-3L	3L (0.8 gal)	Liquid
832B-12L	12L (3.2 gal)	Liquid
832B-60L	60L (16 gal)	Liquid

Technical Data

Download Specifications

Specifications

Curing & Work Schedule
Working Life		60 minutes
Shelf Life		≥3 year
Full Cure	at 20°C [68°F]	24 hour
	at 65°C [149°F]	60 minutes
	at 80°C [176°F]	45 minutes
	at 100°C [212°F]	35 minutes
Storage Temperature of Unmixed Parts		16 to 27°C [60 to 80°F]
Curing & Work Schedule
Constant Service Temp.		-30°C to 140°C [-22 to 284°F]
Service Temperature		<-30 \| +145 °C [<-22 \| +294 °F]
Cured Properties - Physical	Test Method
Color	Visual	Black
Density (at 26°C)	ASTM D 792	1.12 g/cm³
Hardness	(Shore D durometer)	80D to 82D
Tensile Strength	ASTM D 638	56.9 N/mm² [8,250 lb/in²]
Elongation	ASTM D 638	3.3%
Lap Shear Strength	ASTM D 1002	4.2 N/mm² [606lb/in²]
Izod Impact	ASTM D 256	0.932 kJ/m² [0.443 ft·lb/in]
Compression Strength	ASTM D 695	155 N/mm² [22,400lb/in²]
Modulus	ASTM D 695	2,590 N/mm² [375,000 lb/in²]
Flexural Strength	ASTM D 790	113.76 N/mm² [16,500 lb/in²]
Modulus	ASTM D 790	2,940 N/mm² [427,000 lb/in²]
Cured Properties - Electrical	Test Method
Breakdown Voltage	ASTM D 149	51.9 kV @ avg. of 2.79 mm
Dielectric Strength	ASTM D 149	472 V/mil [18.6 kV/mm]
Volume Resistivity	ASTM D257	5.3 x10¹² ohm · cm
Surface Resistivity	ASTM D257	3.1 x10¹⁰ ohm
Comparative Tracking Index	ASTM D 3628	Not established
Dielectric Dissipation & Constant	ASTM D 150-98	dissipation, D constant, k’
@ 60Hz		0.007 D, 3.90 k'
@1 kHz		0.008 D, 2.95 k'
@10 kHz		0.013 D, 2.89 k'
@100 kHz		0.018 D, 2.83 k'
@1 MHz		0.017 D, 2.77 k'
Cured Properties - Thermal	Test Method
Coefficient of Thermal Expansion (CTE)	ASTM E 831	104 ppm/°C
Glass Transition Temperature (Tg)	ASTM D 3418	Not established
Heat Deflection Temperature (HDT)	ASTM D 648	46.638°C [115.95°F]
Uncured Properties - Physical	Part A	Part B
Color	Black	Clear, Amber Tint
Viscosity at 24°C [73°F]	2,500 cP [2.5 Pa·s]	11,000 cP [11.0 Pa·s]
Density	1.127 g/mL	0.967 g/mL
Flash Point	154°C [309°F]	110°C [230°F]
Odor	Mild	Musty
Uncured Properties - Physical	Mixture (2A:1B)
Color	Black
Viscosity at 24°C [73°F]	3,300 cP [3.3 Pa·s]
Density	1.058 g/mL
Mix Ratio by volume (A:B)	2.0:1.0
Mix Ratio by weight (A:B)	2.3:1.0
Solids Content (w/w)	99%
Chemical Solvent Resistance
	Weight Change 3 days	Weight Change 45 days
Water	< 0%	< 1%
Hydrocloric Acid	< 0%	< 1%
Isopropyl Alcohol	0.3%	< 1%
Mineral spirits	0.3%	0.3%
Xylene	2%	9%
Ethyl Lactate	3%	7%
Iso Hexanes	5%	8%
Acetone	7%	destroyed