Chase Electronic Coatings HumiSeal® 1B58LU Rubber Conformal Coating

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Chase Electronic Coatings HumiSeal® 1B58LU Rubber Conformal Coating
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	HumiSeal® 1B58LU is an air drying, single component, synthetic rubber conformal coating. Because of its unique chemistry, HumiSeal® 1B58LU has extremely low moisture vapor permeability and improved thermal stability. The coating demonstrates excellent flexibility, low stress on components, fluoresces under UV for ease of inspection and is easily repaired. HumiSeal® 1B58LU contains methylcyclohexane which is more environmentally friendly than traditional solvents. The coating is in full compliance with the RoHS Directive 2002/95/EC and IPC-CC-830. Information provided by Chase Electronic Coatings.
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Physical Properties	Original Value	Comments

Density	0.770 g/cc	ASTM D1475
Solids Content	20 %	By weight, ± 1.5%; Fed-Std-141, Meth. 4044
Volatile Organic Compounds (VOC) Content	628 g/l
Viscosity	210 - 270 cP	Fed-Std-141, Meth. 4287. Part A
Thickness	25.0 - 75.0 microns	Recommended coating

Mechanical Properties	Original Value	Comments
Tensile Strength	33.6 MPa
	11.6 MPa @Treatment Temp. 140 °C, Time 1.08e+7 sec
	18.6 MPa @Treatment Temp. 140 °C, Time 7.20e+6 sec
	27.0 MPa @Treatment Temp. 140 °C, Time 3.60e+6 sec
Elongation at Break	>= 503 %
	>= 96 % @Treatment Temp. 140 °C, Time 1.08e+7 sec
	>= 443 % @Treatment Temp. 140 °C, Time 7.20e+6 sec
	>= 484 % @Treatment Temp. 140 °C, Time 3.60e+6 sec

Electrical Properties	Original Value	Comments
Insulation Resistance	7.50e+13 ohm	Moisture; MIL-I-46058C
	5.00e+14 ohm	MIL-I-46058C

Thermal Properties	Original Value	Comments
Glass Transition Temp, Tg	-49.6 °C	DSC

Processing Properties	Original Value	Comments
Cure Time	0.500 hour @Temperature 76.0 °C	Option
	24.0 hour @Temperature 23.0 °C
	168 hour @Temperature 23.0 °C	Optimum Properties
Tack-Free Time	0.170 hour	Fed-Std-141, Meth. 4061
Shelf Life	18.0 Month @Temperature 23.0 °C	DOM

Descriptive Properties
Dielectric Withstand	>1500 V	per MIL_I_46058C
Moisture Vapor Transmission	5.2 g/m2 •day•mil	ASTM E398-03
Thermal Shock	-65 to 125°C	per MIL_I_46058C, 50 cycles

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PCHAS930 / 239791

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