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PC-582

PC-582

One Component, Flexible, Heat Cure Epoxy

DESCRIPTION:

Polycast 582 is a filled, one component, flexible, heat cure epoxy system designed for potting applications requiring low coefficient of thermal expansion.

PROPERTIES - UNCURED:    
Color, Visual Black  
Viscosity, cps. 25,000 ASTMD2393
Specific Gravity 1.47  
Pot Life @ 100° C, hours 2-2.5  
Shelf Life @ 72o F, months (max.) 3  
     
PROPERTIES - CURED:    
Hardness Durometer (Shore D) 55-60    ASTMD 2240
Tensile Strength, psi  6,500 ASTMD 638
Tensile Elongation, % 60-75 ASTMD 638
Coefficient of Thermal Expansion (cm/cm/°C) 60 x 10-6   
Thermal Conductivity, BTU's  (BTU-in/(ft2)(hr)(°F) 4  
Useful Temperature Range, °C -55 - 155  
Dielectric Strength, volts/mil 420  ASTMD 149
Dielectric Constant, 60 Hz 4.2 ASTMD 150
Dissipation Factor, 60 Hz 0.01 ASTMD 150
Volume Resistivity, ohm-cm    1.0 x 1015 ASTMD 257

 

CURE SCHEDULE:                                                 

6-8 hours @ 95°C - lowest shrinkage

3-5 hours @ 105°C

2-3 hours @ 120°C

NOTE: Post cure 2-3 hours at 150°C for optimum high temperature properties.