Magnolia Plastics
Magnobond 3265, Parts A & B
Plastics for the Space Age Since 1957
Magnobond 3265, Parts A & B
DESCRIPTION
Compound 3265 is an epoxy resin casting and potting compound. It is
designed to protect electrical devices from extremes in humidity and
temperatures. The convenient 1:1 by volume mix ratio makes this product
an excellent choice for automatic production. It's low shrinkage
eliminates excessive stress on the encapsulated unit.
PHYSICAL PROPERTIES
Part A Part B Mix
Color Off White Black Black
Specific Gravity 1.57 + .07 1.64 + .07 1.65 + .07
Mix Ratio (by weight) 1.00 + .05 1.05 + .05 - - -
Mix Ratio (by volume) 1.00 + .05 1.00 + .05 - - -
Viscosity (Spindle #5 6500 + 1500 cps 3000 + 1000 cps 3500 + 1500 cps
@ 50 RPM's)
Cure Schedule (700 grams @ 77°F) 3-5 days
Gel Time (3 fluid oz. @ 150°F) 28 + 5 minutes
Shore Hardness (700 grams @ 77°F):
Cure 16 hours @ 77°F A65 minimum
Cure 72 hours @ 77°F A90 + 5
Chemical Resistance (% absorbed, 7 days @ 77°F)
Water 2.2
Diesel 0.064
Gasoline 0.25
Motor Oil (10W-40) 0.069
Tensile Strength, psi 600
Percent Elongation 20
Thermal Cycling, -56°F to +185°F No cracks after 6 cycles
Dielectric Constant, 1 MHz 5.6
Dissipation Factor, 1 MHz 0.04
Volume Resistivity - 500 volts (Ohms):
@ Room temperature 1.6 X 1010
@ 150°F 1.7 X 109
Surface Resistivity - 500 volts (Ohms):
@ Room temperature 3.8 X 1012
@ 150°F 9.0 X 1010
Thermal Conductivity, Cal cm/sec cm 2 °C 1.6 X 10-3
ASTM D-2214
Shelf Life (either component) - A 6 months
- B (stored below 90°F)
Coefficient of Linear Thermal Expansion 8.7 X 10-5 in/in °C
Shrinkage
When cured @ 77°F 0.0013 in/in
When cured @ 100°F 0.0030 in/in
Gel Time in 700 gram mass
When cured @ 77°F 8 to 12 hours
When cured @ 100°F 70 to 75 minutes
When cured @ 120°F 35 to 40 minutes
The following graph shows the maximum exothermic temperature reached when
700 grams are cured at various temperatures.
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250 Ί
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200 Ί
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150 Ί
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100 Ί
ΘΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝΝ
77 80 90 100 110 120 130
CURE TEMPERATURE (°F)
DANGER FIRST-AID
-------------------------------- -------------------------
May cause severe irritation. Eyes - Immediately flush
Do not get in eyes, on skin eyes with plenty of water
or clothing. for at least 15 minutes.
Do not inhale vapors. Get medical attention.
Wear rubber gloves & aprons. Skin - Wash immediately
Use with adequate ventilation. with soap and water.
Wash thoroughly after handling. Clothing - Remove clothing
For industrial use only. and wash before reuse.
Keep container closed.
Do not reuse this container.
Spec Sheet Dated: 01/08/91
For more information, contact us at:
Sales Division
Magnolia Plastics, Inc.
5547 Peachtree Industrial Boulevard
Chamblee, GA 30341-2296 USA
770-451-2777, Voice
770-451-5376, FAX
800-831-8031, Voice
Email: sales@magnapoxy.com
How To Order:
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Copyright © 1998, Magnolia Plastics, Inc. All Rights Reserved, including
the right of reproduction in whole or in part in any form. The stylized Magnolia Plastics logo is a
regsitered trademark of Magnolia Plastics, Inc.
Contact Magnolia at sales@magnapoxy.com
Updated: October 10, 1998
