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Reference: viscosity, hardness

ELECTRICAL SYSTEM

RESIN 20271
HARDENER 50013

DESCRIPTION

20271/50013 Electrical Potting System is a black, epoxy that has a moderate mixed viscosity and a long gel time. This system is highlighted by low shrinkage and low exotherm.

System Components:
20271Resin Part A with 50013 Hardener Part B.

USE

Designed for ambient cured applications requiring complete impregnation. System may be used with or without vacuum. The moderate viscosity and long gel time make  this a viable system for high speed production or manual applications.  The cured system has excellent thermal shock resistance.

PRODUCT DATA

Color:
   Resin                                                                                             Black
   Hardener                                                                                       Clear
   Mixed                                                                                             Black

Cure Cycle:
    Ambient 77°F (25°C)                                                                  24 hours

Working Time (ASTM D-2471)
    200 grams @ 77°F (25° C)                                                       150 minutes

Gel Time (ASTM D-2471)
    200 grams @ 77°F (25° C)                                                       > 5 hours
    200 grams @ 120°F (49° C)                                                      45 minutes

Viscosity (ASTM D-2393)
    Resin @ 77°F (25°C)                                                                  75,000 cps
    Resin @ 120°F 49°C)                                                                 15,000 cps
    Hardener @ 77°F (25°C)                                                                    35 cps
    Mixed @ 77°F (25°C)                                                                    5,500 cps
    Mixed @ 120°F (49°C)                                                                  1,000 cps

Density, lbs./gal. (specific gravity)
    Resin                                                                                               17.9 (2.15)
    Hardener                                                                                           7.9 (0.95)
    Mixed                                                                                               16.0 (193)

Mixing Ratio:
    By Weight                                                                                         100 parts resin 10 parts hardener
    By Volume                                                                                         4.3 parts resin to 1 part hardener

Shelf Life
    Store cool and dry                                                                             1 year

Hardness (ASTM D-2240)  
    Shore D                                                                                                75

 Thermal conductivity, BTU in/(hr ft^{2 o}F)                                            3.8

 CTE, mm/mm/^oC                                                                                    28 x 10^-6

ELECTRICAL PROPERTIES

Dielectric Constant,
        1k Hz                                                                                                  4.8
    100k Hz                                                                                                  4.7

Dissipation Factor
        1k Hz                                                                                                  0.01
    100k Hz                                                                                                 0.01

Volume Resistance, Ohm-cm                                                            3.5 x 10¹⁵

Dielectric Strength,  volts/mil                                                                 355

Customer Service (303) 617-3094
  
10/08/08

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Last Modified: May 24, 2010