DESCRIPTION

Polygel 50 is a flexible unfilled epoxy resin system. It is transparent and cures at room temperature. Polygel 50 is very low in viscosity and normally does not require vacuum degassing to assure bubble-free casting and imbedments. It may also be used in automated dispensing equipment.

PROPERTIES - UNCURED		Part A	Part B
Color , visual .........		Clear	Clear
Viscosity, ASTM-D-2393 (c.p.s. @ 25^o C)..		500	700
Specific Gravity .............		1.05	0.98
Mix Ratio (by wt.) . . . . . . . . . .	100:25
Mixed Viscosity, ASTM-D-2393 (@ 25^o C)	520
Pot Life @ 25^OC (100 grams) .....	60-90 minutes
Shelf Life @ 70^o F . . . . . . ....	12 months
PROPERTIES - CURED
PHYSICAL
Hardness, ASTM-D-2240 (Durometer) . . . . ...	Shore A 50
Tensile Strength, ASTM-D-638 . . . . . . .	600 psi
Tensile Elongation, ASTM-D-638 . . . . . .	150 %
Coefficient of Thermal Expansion . . . . . .	28 x 10^-6
Moisture Absorption. . . . . . . . . . . .	0.08%
Dielectric Strength, ASTM-D-149 (volts/mil) ...	375
Dielectric Constant, ASTM-D-150 . . . . . . ..	3.5
Dissipation Factor, ASTM-D-150.... . . . .	0.03
Volume Resistivity, ASTM-D-257 (ohm-cm)....	1 x 10¹⁴

MIXING INSTRUCTIONS

Pre-mix Part A and Part B separately. Then measure 100:25 parts by weight (A to B). Mix thoroughly scraping the sides and bottom of the container. Evacuate and then pour into mold or cavity.

CURE SCHEDULE

Room temperature cure @75°F for 24 hours.

Post cure @ 250ºF for 2 hours.

CAUTION: Good housekeeping rules are always important. Provide ample ventilation in all areas of handling, mixing and use. Avoid prolonged breathing of possible fumes. Minimize skin contact. Use of goggles, rubber gloves and protective creams is recommended. Always wash exposed areas immediately using warm water and soap, followed by rinsing with clear water. If material comes in contact with eyes, flush with clean water for 15 minutes and consult a physician immediately.

All data given in this bulletin is based on our own research and research of others. They are believed to be accurate, however, no guarantee of accuracy is made. Product described is sold without warranty, except conformity to specifications, and on condition that purchasers shall determine suitability for their particular purpose.