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Overview of materials for Epoxy Encapsulant, Unreinforced
Categories: Polymer; Thermoset; Epoxy; Epoxy Encapsulant, Unreinforced
Material Notes: This property data is a summary of similar materials in the MatWeb database for the category "Epoxy Encapsulant, Unreinforced". Each property range of values reported is minimum and maximum values of appropriate MatWeb entries. The comments report the average value, and number of data points used to calculate the average. The values are not necessarily typical of any specific grade, especially less common values and those that can be most affected by additives or processing methods.
Vendors: Master Bond is a leading manufacturer of high performance epoxy adhesives, sealants, coatings, potting/encapsulation compounds and impregnation resins. Our epoxies include one and two part formulations that can be cured at room temperature, with heat or exposure to UV light. Special formulations feature high electrical and/or thermal conductivity and wide service temperature ranges. Visit www.masterbond.com.

Kohesi Bond is a pioneer in manufacturing over 300 grades of custom engineered adhesives, sealants, coatings, potting and encapsulation compounds. Our first-rate adhesives are tailor-fitted to meet your exact specifications and offer superior strength and performance in your application. Learn more about Kohesi Bond’s industry-ready products at kohesibond.com.

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Physical PropertiesMetricEnglishComments
Density 0.700 - 3.59 g/cc0.0253 - 0.130 lb/in³Average value: 1.43 g/cc Grade Count:189
Filler Content 0.000 - 63.0 %0.000 - 63.0 %Average value: 48.5 % Grade Count:7
Water Absorption 0.00340 - 0.900 %0.00340 - 0.900 %Average value: 0.245 % Grade Count:73
 0.140 - 1.50 %
@Temperature 100 - 100 °C		0.140 - 1.50 %
@Temperature 212 - 212 °F		Average value: 0.632 % Grade Count:5
 0.140 - 1.50 %
@Time 3600 - 86400 sec		0.140 - 1.50 %
@Time 1.00 - 24.0 hour		Average value: 0.632 % Grade Count:5
Moisture Absorption at Equilibrium 0.0700 - 2.60 %0.0700 - 2.60 %Average value: 0.728 % Grade Count:5
Loss On Ignition  0.280 - 0.500 %
@Temperature 150 - 155 °C		0.280 - 0.500 %
@Temperature 302 - 311 °F		Average value: 0.427 % Grade Count:3
 0.280 - 0.500 %
@Time 605000 - 605000 sec		0.280 - 0.500 %
@Time 168 - 168 hour		Average value: 0.427 % Grade Count:3
Moisture Vapor Transmission <= 22.6771 cc-mm/m²-24hr-atm
@Temperature 40.0 - 40.0 °C		<= 57.5999 cc-mil/100 in²-24hr-atm
@Temperature 104 - 104 °F		Average value: 22.7 cc-mm/m²-24hr-atm Grade Count:1
Viscosity 1.00 - 1.10e+6 cP1.00 - 1.10e+6 cPAverage value: 35800 cP Grade Count:397
 35.0 - 130000 cP
@Temperature 35.0 - 175 °C		35.0 - 130000 cP
@Temperature 95.0 - 347 °F		Average value: 19300 cP Grade Count:23
Linear Mold Shrinkage 0.000500 - 0.0200 cm/cm0.000500 - 0.0200 in/inAverage value: 0.00347 cm/cm Grade Count:61
Spiral Flow 63.0 - 130 cm24.8 - 51.2 inAverage value: 88.0 cm Grade Count:7
Outgassing - Total Mass Loss 0.000 - 1.10 %0.000 - 1.10 %Average value: 0.240 % Grade Count:13
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore A 15.0 - 90.015.0 - 90.0Average value: 54.2 Grade Count:19
Hardness, Shore D 24.0 - 98.024.0 - 98.0Average value: 79.6 Grade Count:325
 24.0 - 39.0
@Temperature 100 - 149 °C		24.0 - 39.0
@Temperature 212 - 300 °F		Average value: 30.3 Grade Count:2
Hardness, Shore OO 64.0 - 70.064.0 - 70.0Average value: 66.0 Grade Count:3
Tensile Strength, Ultimate 0.441 - 758 MPa64.0 - 110000 psiAverage value: 47.0 MPa Grade Count:220
 >= 34.4738 MPa
@Temperature 149 - 149 °C		>= 5000.01 psi
@Temperature 300 - 300 °F		Average value: 34.5 MPa Grade Count:1
Tensile Strength, Yield 0.689 - 85.1 MPa100 - 12300 psiAverage value: 22.8 MPa Grade Count:28
Elongation at Break 0.000 - 200 %0.000 - 200 %Average value: 24.7 % Grade Count:85
Elongation at Yield 1.00 - 140 %1.00 - 140 %Average value: 19.6 % Grade Count:7
Modulus of Elasticity 0.0138 - 9.65 GPa2.00 - 1400 ksiAverage value: 2.62 GPa Grade Count:151
 0.0500 - 8.557 GPa
@Temperature 35.0 - 260 °C		7.25 - 1241 ksi
@Temperature 95.0 - 500 °F		Average value: 2.17 GPa Grade Count:8
Flexural Yield Strength 34.3 - 150 MPa4970 - 21800 psiAverage value: 86.9 MPa Grade Count:56
 17.2369 - 50.0 MPa
@Temperature 150 - 260 °C		2500.00 - 7250 psi
@Temperature 302 - 500 °F		Average value: 34.5 MPa Grade Count:2
Flexural Modulus 1.19 - 18.0 GPa172 - 2610 ksiAverage value: 6.44 GPa Grade Count:31
 5.40 - 5.40 GPa
@Temperature 150 - 150 °C		783 - 783 ksi
@Temperature 302 - 302 °F		Average value: 5.40 GPa Grade Count:1
Compressive Yield Strength 4.83 - 234 MPa700 - 34000 psiAverage value: 112 MPa Grade Count:87
Compressive Modulus 0.0345 - 8.20 GPa5.00 - 1190 ksiAverage value: 1.85 GPa Grade Count:24
Shear Strength 5.52 - 65.0 MPa800 - 9430 psiAverage value: 18.5 MPa Grade Count:31
 15.8579 - 15.8579 MPa
@Temperature 204 - 204 °C		2300.00 - 2300.00 psi
@Temperature 400 - 400 °F		Average value: 15.9 MPa Grade Count:2
Adhesive Bond Strength 3.10 - 110 MPa450 - 16000 psiAverage value: 13.9 MPa Grade Count:118
 1.55 - 16.8922 MPa
@Temperature -54.4 - 260 °C		225 - 2450.00 psi
@Temperature -66.0 - 500 °F		Average value: 8.28 MPa Grade Count:5
Izod Impact, Notched 0.0961 - 0.694 J/cm0.180 - 1.30 ft-lb/inAverage value: 0.273 J/cm Grade Count:24
Izod Impact, Unnotched 0.326 - 0.908 J/cm0.610 - 1.70 ft-lb/inAverage value: 0.472 J/cm Grade Count:20
Peel Strength 0.351 - 8.77 kN/m2.00 - 50.0 pliAverage value: 3.41 kN/m Grade Count:23
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 5.00 - 2.20e+18 ohm-cm5.00 - 2.20e+18 ohm-cmAverage value: 1.54e+16 ohm-cm Grade Count:290
 1.00e+8 - 5.80e+15 ohm-cm
@Temperature 30.0 - 260 °C		1.00e+8 - 5.80e+15 ohm-cm
@Temperature 86.0 - 500 °F		Average value: 5.51e+14 ohm-cm Grade Count:25
Surface Resistance 1.00e+14 - 7.40e+16 ohm1.00e+14 - 7.40e+16 ohmAverage value: 2.08e+16 ohm Grade Count:15
 3.90e+14 - 1.80e+15 ohm
@Temperature 105 - 149 °C		3.90e+14 - 1.80e+15 ohm
@Temperature 221 - 300 °F		Average value: 1.10e+15 ohm Grade Count:2
Dielectric Constant 1.85 - 6.601.85 - 6.60Average value: 4.06 Grade Count:309
 2.94 - 35.7
@Temperature 30.0 - 260 °C		2.94 - 35.7
@Temperature 86.0 - 500 °F		Average value: 4.78 Grade Count:18
 2.94 - 35.7
@Frequency 60.0 - 1.00e+6 Hz		2.94 - 35.7
@Frequency 60.0 - 1.00e+6 Hz		Average value: 4.78 Grade Count:18
Dielectric Strength 11.8 - 64.6 kV/mm300 - 1640 kV/inAverage value: 18.6 kV/mm Grade Count:218
 14.8 - 14.8 kV/mm
@Temperature 150 - 150 °C		376 - 376 kV/in
@Temperature 302 - 302 °F		Average value: 14.8 kV/mm Grade Count:1
Dissipation Factor 0.00100 - 0.5000.00100 - 0.500Average value: 0.0372 Grade Count:159
 0.00300 - 0.500
@Temperature 30.0 - 260 °C		0.00300 - 0.500
@Temperature 86.0 - 500 °F		Average value: 0.0354 Grade Count:16
 0.00300 - 0.500
@Frequency 60.0 - 1.00e+6 Hz		0.00300 - 0.500
@Frequency 60.0 - 1.00e+6 Hz		Average value: 0.0354 Grade Count:16
Arc Resistance 87.0 - 207 sec87.0 - 207 secAverage value: 156 sec Grade Count:13
 
Thermal PropertiesMetricEnglishComments
CTE, linear 4.00 - 275 µm/m-°C2.22 - 153 µin/in-°FAverage value: 61.7 µm/m-°C Grade Count:222
 47.0 - 263 µm/m-°C
@Temperature 30.0 - 130 °C		26.1 - 146 µin/in-°F
@Temperature 86.0 - 266 °F		Average value: 142 µm/m-°C Grade Count:17
CTE, linear, Transverse to Flow 45.0 - 70.0 µm/m-°C25.0 - 38.9 µin/in-°FAverage value: 59.8 µm/m-°C Grade Count:7
Thermal Conductivity 0.100 - 6.30 W/m-K0.694 - 43.7 BTU-in/hr-ft²-°FAverage value: 0.850 W/m-K Grade Count:161
Maximum Service Temperature, Air 65.0 - 343 °C149 - 650 °FAverage value: 150 °C Grade Count:304
Maximum Service Temperature, Inert 63.0 - 195 °C145 - 383 °FAverage value: 131 °C Grade Count:20
Heat Distortion Temperature 70.0 - 193 °C158 - 380 °FAverage value: 117 °C Grade Count:4
Minimum Service Temperature, Air -269 - -20.0 °C-453 - -4.00 °FAverage value: -71.8 °C Grade Count:241
Glass Transition Temp, Tg -55.0 - 240 °C-67.0 - 464 °FAverage value: 97.3 °C Grade Count:138
Flammability, UL94 HB - V-0HB - V-0Grade Count:19
Flash Point 100 - 200 °C212 - 392 °FAverage value: 164 °C Grade Count:8
 
Optical PropertiesMetricEnglishComments
Refractive Index 1.12 - 1.631.12 - 1.63Average value: 1.53 Grade Count:29
Transmission, Visible 0.000 - 90.0 %0.000 - 90.0 %Average value: 84.0 % Grade Count:15
 
Processing PropertiesMetricEnglishComments
Processing Temperature 22.2 - 185 °C72.0 - 365 °FAverage value: 129 °C Grade Count:14
Cure Time 0.167 - 18000 min0.00278 - 300 hourAverage value: 2140 min Grade Count:191
 1.80 - 14400 min
@Temperature 43.0 - 232 °C		0.0300 - 240 hour
@Temperature 109 - 450 °F		Average value: 228 min Grade Count:218
 120 - 720 min
@Temperature 57.2 - 121 °C		2.00 - 12.0 hour
@Temperature 135 - 250 °F		Average value: 228 min Grade Count:8
 120 - 720 min
@Thickness 3.17 - 3.17 mm		2.00 - 12.0 hour
@Thickness 0.125 - 0.125 in		Average value: 228 min Grade Count:8
Pot Life 1.00 - 40300 min1.00 - 40300 minAverage value: 874 min Grade Count:244
 30.0 - 180 min
@Temperature 40.0 - 120 °C		30.0 - 180 min
@Temperature 104 - 248 °F		Average value: 72.0 min Grade Count:5
 
Component Elements PropertiesMetricEnglishComments
Potassium, K 0.000100 - 0.000400 %0.000100 - 0.000400 %Average value: 0.000137 % Grade Count:8
Sodium, Na 0.000100 - 0.000500 %0.000100 - 0.000500 %Average value: 0.000450 % Grade Count:8

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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