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Master Bond adhesives

Kohesi Bond KB 1031 AT-2LO Two component, cryogenically serviceable flexibilized epoxy
Categories: Polymer; Thermoset; Epoxy; Epoxy Adhesive; Epoxy Encapsulant, Unreinforced

Material Notes: Product Highlights:
  • Superior thermal conductivity
  • Tremendous flexibility and elongation
  • Cryogenic service
  • Soaring peel strength
  • Exceptional electrical insulation properties
  • Capable of passing NASA low outgassing
Kohesi Bond KB 1031 AT-2LO is a two component, highly flexibilized epoxy system suitable for bonding, sealing, potting and encapsulation. It has a favorable 1:3 (Part A: Part B) mix ratio by weight. It offers stellar thermal conductivity and is capable of passing NASA low outgassing test, unlike most flexible epoxies. 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 1031 AT-2LO can withstand severe thermal shocks and cycling even at cryogenic temperatures. It offers an extensive service temperature range of 4K (-269.15°C) to +120°C. It fosters outstanding physical strength properties and yet consolidates high peel strength and elongation. KB 1031 AT-2LO adheres well to a wide variety of substrates including metals, ceramics, most plastics and glass. It offers excellent chemical resistance to a variety of fuels, oils and water. Part A has a gray color and Part B has an off-white color. Owing to its excellent performance and vacuum compatibility KB 1031 AT-2LO is widely used in electronics and related industries.

Typical Applications:

  • Bonding
  • Sealing
  • Coating
  • Potting
  • Encapsulation

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 36000 - 85000 cP36000 - 85000 cPPart A
 300000 - 810000 cP300000 - 810000 cPPart B
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 35 - 4035 - 40
Tensile Strength >= 22.1 MPa>= 3200 psi
Elongation at Break >= 25 %>= 25 %
Adhesive Bond Strength >= 6.21 MPa>= 900 psiTensile Lap Shear, Al/Al
Peel Strength >= 3.16 kN/m>= 18.0 pliT-peel Strength, Al/Al
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+14 ohm-cm>= 1.00e+14 ohm-cm
 
Thermal PropertiesMetricEnglishComments
Maximum Service Temperature, Air 120 °C248 °F
Minimum Service Temperature, Air -269 °C-452 °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 >= 65.0 min>= 65.0 min100 g of mixed epoxy
 
Descriptive Properties
Mixing Ratio1:3 by weightPart A : Part B

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.

PKOHESI900 / 249079

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