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Ensinger PEI

Kohesi Bond KB 1631 ANHT Two component, thermally conductive epoxy for bonding, sealing and coating
Categories: Polymer; Thermoset; Epoxy; Epoxy Encapsulant, Unreinforced; Epoxy, Thermally Conductive

Material Notes: Product Highlights:
  • Superior thermal conductivity
  • Easy 1:1 mix ratio by weight or volume
  • Resistant to temperatures as high as 200°C
  • Superior dimensional stability
  • Exceptional electrical insulation properties
  • Low coefficient of thermal expansion
Kohesi Bond KB 1631 ANHT is a two component, room temperature epoxy system suitable for bonding, sealing and coating. It has a very convenient 1:1 (Part A: Part B) mix ratio by weight or volume. Primarily, it offers stellar thermal conductivity, making it ideal for heat transfer applications. This epoxy system readily cures at room temperature and can achieve faster cures at elevated temperatures. The optimal cure schedule is an overnight room temperature set-up followed by a heat cure at 70°C - 90°C for 3 - 5 hours. KB 1631 ANHT being a filled system, offers first-rate dimensional stability and exceptionally low coefficient of thermal expansion. It offers an extensive service temperature range of -50°C to +200°C. It is an adhesive offering preeminent physical strength properties. KB 1631 ANHT adheres well to a wide variety of substrates including metals, ceramics, most plastics and glass. In addition to superior electrical insulation, and thermal conductivity, it also offers excellent chemical resistance to a variety of acids, bases, fuels, oils and water. Part A has a light gray color and Part B has a gray color. Owing to its Excellent performance and heat transfer capabilities KB 1631 ANHT is widely used in electronics, aerospace, quality OEM and other similar industries.

Typical Applications:

  • Bonding
  • Coating
  • Sealing

Information provided by Kohesi Bond Custom Engineered Adhesives

Vendors: 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
Viscosity 55000 - 125000 cP55000 - 125000 cPPart B
 210000 - 610000 cP210000 - 610000 cPPart A, thixotropic
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D >= 85>= 85
Tensile Strength 37.9 - 44.8 MPa5500 - 6500 psi
Tensile Modulus >= 3.79 GPa>= 550 ksi
Adhesive Bond Strength >= 8.27 MPa>= 1200 psiTensile Lap Shear, Al/Al
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+15 ohm-cm>= 1.00e+15 ohm-cm
Dielectric Constant 4.91
@Frequency 60 Hz
4.91
@Frequency 60 Hz
Dielectric Strength >= 16.5 kV/mm
@Thickness 3.17 mm
>= 420 kV/in
@Thickness 0.125 in
 
Thermal PropertiesMetricEnglishComments
CTE, linear 20.0 - 25.0 µm/m-°C11.1 - 13.9 µin/in-°F
Thermal Conductivity 3.20 - 3.50 W/m-K22.2 - 24.3 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 200 °C392 °F
Minimum Service Temperature, Air -50.0 °C-58.0 °F
 
Processing PropertiesMetricEnglishComments
Cure Time  120 - 180 min
@Temperature 90.0 °C
2.00 - 3.00 hour
@Temperature 194 °F
Option 2
 180 - 300 min
@Temperature 70.0 - 90.0 °C
3.00 - 5.00 hour
@Temperature 158 - 194 °F
Optimum Cure: overnight at 23°C plus 3 - 5 hours at 70°C - 90°C
 2880 - 4320 min
@Temperature 23.0 °C
48.0 - 72.0 hour
@Temperature 73.4 °F
Option 1
Working Life >= 90.0 min>= 90.0 min100 g of mixed epoxy
Shelf Life 6.00 Month6.00 Monthin original unopened containers

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.

PKOHESI959 / 249138

Proto3000 – 3D Engineering Solutions

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