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Ensinger PEI

Kohesi Bond KB 1458 TC Two component, unique epoxy offering extremely low thermal resistance
Categories: Polymer; Thermoset; Epoxy; Epoxy Adhesive; Epoxy, Thermally Conductive

Material Notes: Product Highlights:
  • Excellent heat transfer efficiency
  • Low coefficient of thermal expansion (CTE)
  • Superb mechanical strength properties
  • Microns thin bond lines achievable
  • Phenomenal electrical insulation properties
  • Unlimited working life at room temperature
Kohesi Bond KB 1458 TC is a two component, thermal management epoxy system. This product offers high heat transfer capabilities. This product has very low thermal resistance and can be applied in layers as thin as 10 microns. The efficiency of heat transfer improves exceedingly with lower thermal resistance. This can be explained easily with the following formula: R = l/K [“R” is the thermal resistance; “l” is the adhesive layer thickness; “K” is the thermal conductivity of the adhesive] Applying peculiar values, standard thermally conductive adhesives (alumina filled) that are applicable in more than 50 micron thicknesses, offer a thermal resistance of 35 - 40 × 10-6 m2•K/W. Since KB 1458 TC can be applied in 10 micron thick sections, it offers a notably low thermal resistance of 5 - 6 × 10-6 m2•K/W. KB 1458 TC has a wide service temperature range of -70°C to +150°C. It adheres well to a wide variety of substrates including metals, ceramics, composites, most plastics and glass. It provides superior bonding and physical strength properties and very low shrinkage upon cure. It offers excellent dimensional stability and a very low coefficient of thermal expansion (CTE). Part A and Part B are gray in color. Owing to its sensational thermal management properties KB 1458 TC is widely used in electronics, optical and specialty OEM industries.

Typical Applications:

  • Bonding
  • 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 150000 - 200000 cP150000 - 200000 cPPart B
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength 42.7 - 49.6 MPa6200 - 7200 psi
Tensile Modulus 4.27 - 4.90 GPa620 - 710 ksi
Adhesive Bond Strength 8.27 MPa1200 psiTensile Lap Shear, Al/Al
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+14 ohm-cm>= 1.00e+14 ohm-cm
 
Thermal PropertiesMetricEnglishComments
CTE, linear 12.0 - 15.0 µm/m-°C6.67 - 8.33 µin/in-°F
Thermal Conductivity 3.40 - 3.60 W/m-K23.6 - 25.0 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 149 °C300 °F
Minimum Service Temperature, Air -70.0 °C-94.0 °F
 
Processing PropertiesMetricEnglishComments
Cure Time  180 - 300 min
@Temperature 90.0 °C
3.00 - 5.00 hour
@Temperature 194 °F
Optimum Cure: Overnight at 23°C, followed by 3-5 hours at 90°C
 240 - 360 min
@Temperature 70.0 - 90.0 °C
4.00 - 6.00 hour
@Temperature 158 - 194 °F
Option 2
 5760 - 10100 min
@Temperature 23.0 °C
96.0 - 168 hour
@Temperature 73.4 °F
Option 1
Working Life 90.0 - 120 min90.0 - 120 min100 g of mixed epoxy
Shelf Life 6.00 Month6.00 Monthin original unopened containers
 
Descriptive Properties
Thermal Resistance5 - 6 × 10-6 m2·K/W
ViscositypastePart A
 pasteMixed

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.

PKOHESI952 / 249131

Proto3000 – 3D Engineering Solutions

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