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Rulon Bearings

3M Scotchcast™ 265 Electrical Epoxy Powder Resin
Categories: Polymer; Thermoset; Epoxy; Epoxy Cure Resin

Material Notes: 3M Scotchcast Electrical Resin 265 is a new solution to an old problem. Historically, manufactures of coils, stators and armatures have used liquid-based varnishes or resins to coat and impregnate the copper windings to obtain better heat transfer, mechanical strength and environmental protection. However, these liquids – originally natural resins, now mostly synthetic – have presented a number of problems to the user during the manufacturing process. Scotchcast 265 solves many of these problems:
  • Does not require any mixing or catalyzation
  • Does not contain any solvents
  • Is non-flammable
  • Has a long shelf life
  • Requires storage at ordinary air-conditioned temperature
  • Odor-free
  • Spills are easy to clean
  • Can be applied to trickle, spray or dip processes.
Scotchcast 265 is a powder. It is simply applied to the heated winding where it melts, flows into the wire interstices and cures. Low melt viscosity and minimum build make this powder ideal for a variety of coating and bonding applications.

Information provided by 3M

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Physical PropertiesMetricEnglishComments
Density 1.16 g/cc0.0419 lb/in³cured; ASTM D794
 
Mechanical PropertiesMetricEnglishComments
Gardner Impact 18.1 J13.3 ft-lb12-15 mil coating 1/8" sandblasted steel panel Gardner 5/8: Radius Impact Tester
Abrasion 0.200.20[g] Removed from 12-15 mil coating; ASMT D4060
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity  1.00e+7 ohm-cm
@Temperature 175 °C
1.00e+7 ohm-cm
@Temperature 347 °F
ASTM D257
 1.00e+10 ohm-cm
@Temperature 130 °C
1.00e+10 ohm-cm
@Temperature 266 °F
ASTM D257
 1.00e+13 ohm-cm
@Temperature 100 °C
1.00e+13 ohm-cm
@Temperature 212 °F
ASTM D257
 1.00e+14 ohm-cm
@Temperature 25.0 °C
1.00e+14 ohm-cm
@Temperature 77.0 °F
ASTM D257
Dielectric Constant  4.9
@Frequency 10000 Hz,
Temperature 20.0 °C
4.9
@Frequency 10000 Hz,
Temperature 68.0 °F
MIL-I-16923E
 4.9
@Frequency 100000 Hz,
Temperature 20.0 °C
4.9
@Frequency 100000 Hz,
Temperature 68.0 °F
MIL-I-16923E
 5.0
@Frequency 100000 Hz,
Temperature 90.0 °C
5.0
@Frequency 100000 Hz,
Temperature 194 °F
MIL-I-16923E
 5.0
@Frequency 1000 Hz,
Temperature 20.0 °C
5.0
@Frequency 1000 Hz,
Temperature 68.0 °F
MIL-I-16923E
 5.1
@Frequency 10000 Hz,
Temperature 70.0 °C
5.1
@Frequency 10000 Hz,
Temperature 158 °F
MIL-I-16923E
 5.1
@Frequency 100 Hz,
Temperature 20.0 °C
5.1
@Frequency 100 Hz,
Temperature 68.0 °F
MIL-I-16923E
 5.2
@Frequency 1000 Hz,
Temperature 70.0 °C
5.2
@Frequency 1000 Hz,
Temperature 158 °F
MIL-I-16923E
 5.5
@Frequency 100 Hz,
Temperature 70.0 °C
5.5
@Frequency 100 Hz,
Temperature 158 °F
MIL-I-16923E
 6.0
@Frequency 100000 Hz,
Temperature 120 °C
6.0
@Frequency 100000 Hz,
Temperature 248 °F
MIL-I-16923E
 6.2
@Frequency 10000 Hz,
Temperature 120 °C
6.2
@Frequency 10000 Hz,
Temperature 248 °F
MIL-I-16923E
 6.4
@Frequency 1000 Hz,
Temperature 120 °C
6.4
@Frequency 1000 Hz,
Temperature 248 °F
MIL-I-16923E
 8.0
@Frequency 100 Hz,
Temperature 115 °C
8.0
@Frequency 100 Hz,
Temperature 239 °F
MIL-I-16923E
Dielectric Strength 51.2 kV/mm1300 kV/in12 to 15 mil coating; ASTM D149
Dissipation Factor 0.50
@Frequency 100 Hz,
Temperature 20.0 °C
0.50
@Frequency 100 Hz,
Temperature 68.0 °F
 
Thermal PropertiesMetricEnglishComments
Thermal Conductivity 0.180 W/m-K1.25 BTU-in/hr-ft²-°FASTM E1530
 
Processing PropertiesMetricEnglishComments
Cure Time  2.00 min
@Temperature 232 °C
0.0333 hour
@Temperature 450 °F
 5.00 min
@Temperature 204 °C
0.0833 hour
@Temperature 399 °F
 20.0 min
@Temperature 177 °C
0.333 hour
@Temperature 351 °F
 60.0 min
@Temperature 149 °C
1.00 hour
@Temperature 300 °F
Gel Time 1.00 min
@Temperature 193 °C
1.00 min
@Temperature 379 °F
hot plate
Shelf Life 24.0 Month
@Temperature <=27.0 °C
24.0 Month
@Temperature <=80.6 °F
 
Descriptive Properties
AppearanceClear/White depending on thickness

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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