Epoxocast EB 502

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Low Viscosity, Clear Casting Epoxy.

Description:

Epoxocast EB-502 is a clear, unfilled epoxy with low viscosity for general purpose casting and impregnation, exhibiting excellent electrical and physical properties.

Properties - Uncured:- Epoxocast EB502 Epoxocure 9 Epoxocure 11

Color, visual Clear-Slightly Amber

Viscosity ASTM-D-2393 (c.p.s. @ 25ºC) 700

Specific Gravity 1.13

Mix Ratio (weight) --- 100: 13 100: 18

Mixed Viscosity ASTM-D-2393 (c.p.s. @ 25ºC) --- 200 cps 300 cps

Pot Life @ 25ºC (100 grams) --- 1 Hour 4-5 Hours

Shelf Life @ 70ºC 12 months

Properties - Cured:-

Physical:

Hardness, ASTM-D-2240 (Durometer) Shore D 85 Shore D 80

Tensile Strength, ASTM-D-638 10,700 psi 11,000 psi

Tensile Elongation, ASTM-D-638 4.5% 6.5%

Compressive Strength, ASTM-D-695 14,000 psi 15,600 psi

Flexural Strength, ASTM-D-790 17,500 psi 19,500 psi

Coefficient of Thermal Expansion (cm/cm/ºC) 28x10(-6) 24x10(-6)

Heat Distortion Point 150ºC 180ºC

Electrical:

Dielectric Strength, ASTM-D-149 (volts/mil) 425 435

Dielectric Constant, ASTM-D-150 3.8 4.0

Dissipation Factor, ASTM-D-150 0.038 0.033

Volume Resistivity, ASTM-D-257 (ohm-cm) 1.5x10(15) 12x10(15)

Mixing Instructions:

Weigh out required amount of Epoxocast EB-502, and weigh into it 13 parts Epoxocure 9 per 100 parts Epoxocast EB-502; or 18 parts Epoxocure 11 per 100 parts Epoxocast EB-502.
Mix curing agent in thoroughly.
Evacuate for 2-5 minutes if void-free castings are required.
Pour into cavity, mold, etc.

Cure Schedule:

Epoxocure 9 – At room temperature for 4-8. Full properties after 24 hours.

Epoxocure 11 - ½ lb. masses: Cure2-3 hours at 70ºC.

Post cure 2-3 hours at 100ºC.

2 lb. masses: Cure 2-3 hours at 60ºC.

Post cure 2-3 hours at 100ºC.

Larger masses: Cure overnight at room temperature

Post cure 2-3 hours at 75ºC; or 1 hour at 100ºC.