832B-375ML Encapsulating and Potting Epoxy Compound (Black) MG Chemicals

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Encapsulating and Potting Epoxy Compound (Black), 375 ml (12 oz) liquid

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Manufacturer: MG Chemicals

www.mgchemicals.com

Our Price: $69.30

Mfg Part Number: 832B-375ML
Units per Case: 2

Availability: Available
Product Code: 832B-375ML_M100

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Description

Specifications

832B is a general purpose, rigid, 2-part black epoxy that provides extreme environmental, mechanical and physical protection for printed circuit boards and electronic assemblies. Due to its low mixed viscosity, 832B can easily penetrate small gaps and cavities. 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.

Technical Datasheet (TDS)

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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

Sample Size (grams)	Peak Exotherm (Temp. in °C)	Time in Minutes
50	44	155
100	63	110
500	110	65

Features

Extreme impact resistance (contains a form of nylon)
Extreme resistance to water and humidity allowing submersion if needed
Strong chemical resistance to brine, acids, bases, and aliphatic hydrocarbons
Opaque and extremely difficult to remove material providing high security for proprietary
designs
Good protection of electronics against corrosion, fungus, thermal shock, and static discharges
Easy 2A:1B mix ratio compatible with most dispensing equipment
Negligible Volatile Organic Content (VOC)
RoHS Compliant