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Metal adhesives

Resinlab® EP1238 Acrylic / Epoxy Hybrid Adhesive
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive

Material Notes: Resinlab™ EP1238 is a two part acrylic / epoxy hybrid adhesive designed for bonding metals and plastics. It cures quickly at room temperature to a tough, semi-rigid material. It has good wetting to most surfaces and has controlled flow characteristics to give good wetting without excessive running or dripping. This product gives very good vibration and impact resistance. It gives good resistance to water, salt spray, inorganic acids and bases and most organic solvents. It was especially formulated to a 2A:1B volume mix ratio for use in side-by-side dispensing cartridges and meter/mix and dispense equipment. EP1238 will reach handle cure at room temperature within 6 – 12 hours. Cure time can be accelerated by the application of heat. Times and temperatures from 2 hours at 65°C to 30 minutes at 100°C are typical for most applications. Time to heat substrate must be taken into account. Cooler temperatures will also extend work time and increase cure times.

Information Provided by Resinlab L.L.C., an Ellsworth Adhesives Company.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Specific Gravity 1.09 g/cc1.09 g/ccPart B; TM R050-16
 1.13 g/cc1.13 g/ccMixed; TM R050-16
 1.16 g/cc1.16 g/ccPart A; TM R050-16
Water Absorption 0.25 %
@Time 86400 sec
0.25 %
@Time 24.0 hour
TM R050-35
Viscosity 40000 cP40000 cPPart A, RVT, #5, 2.5 rpm; TM R050-12
 65000 cP65000 cPMixed; TM R050-12
 90000 cP90000 cPPart B, RVT, #6, 2.5 rpm; TM R050-12
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 8080TM R050-17
Tensile Strength at Break 58.6 MPa8500 psiTM R050-36
Tensile Strength, Ultimate 58.6 MPa8500 psiTM R050-36
Tensile Strength, Yield 20.7 MPa3000 psiTM R050-36
Elongation at Break 3.0 - 4.0 %3.0 - 4.0 %TM R050-36
Tensile Modulus 3.10 GPa450 ksiTM R050-36
Compressive Yield Strength 62.1 MPa9000 psiTM R050-38
Compressive Strength 138 MPa20000 psiBreak; TM R050-38
 145 MPa21000 psiUltimate; TM R050-38
Compressive Modulus 2.41 GPa350 ksiTM R050-38
Adhesive Bond Strength 27.6 MPa4000 psiLap shear; 2024 T3 Al Abraded / MEK Wipe; TM R050-37
Peel Strength 4.38 kN/m25.0 pliAl to Al
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 1.60e+15 ohm-cm1.60e+15 ohm-cm
Dielectric Constant 6.3
@Frequency 100 Hz,
Temperature 25.0 °C
6.3
@Frequency 100 Hz,
Temperature 77.0 °F
Dielectric Strength 35.0 kV/mm888 kV/in
 
Thermal PropertiesMetricEnglishComments
CTE, linear  80.0 µm/m-°C
@Temperature <=60.0 °C
44.4 µin/in-°F
@Temperature <=140 °F
below Tg
 194 µm/m-°C
@Temperature >=60.0 °C
108 µin/in-°F
@Temperature >=140 °F
above Tg
Thermal Conductivity 0.180 W/m-K1.25 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 150 °C302 °F
Minimum Service Temperature, Air -40.0 °C-40.0 °F
Glass Transition Temp, Tg 60.0 °C140 °FTM R050-25
 
Processing PropertiesMetricEnglishComments
Cure Time  120 min
@Temperature 65.0 °C
2.00 hour
@Temperature 149 °F
 1440 min
@Temperature 25.0 °C
24.0 hour
@Temperature 77.0 °F
Pot Life 20 min20 minMass: 50g; TM R050-19
 
Descriptive Properties
ColorOff-White
Mix Ratio100:47Weight
 2:1Volume

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