LCA-4LV is a highly filled gyro grade epoxy adhesive having a low coefficient of thermal expansion, good dimensional stability, and excellent chemical resistance. It is useful in applications requiring bonding or hermetic sealing of metal, ceramic, glass, and other substrates. Compared to Adhesive LCA-4, Adhesive LCA-4L V is less viscous, has a longer working life and generally requires additional cure time to develop similar properties.

Product Type: Epoxy Adhesive

Application Area: Aerospace Applications

Compatible Substrates & Surfaces: Ceramic, Glass, Metal

Chemical Family: Epoxy & Epoxy Derivatives

Features: Chemical Resistant, Dimensional Stability, Long Working Life, Low Coefficient of Thermal Expansion, Low Outgassing

Technical Data Sheet

Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Markets
Applications
Application Area
Compatible Substrates & Surfaces
Segment
Instructions For Use
  • Stir well the contents of the container each time before removing material. If the contents are hard or lumpy, warm to 200°F and mix thoroughly before removing material.
  • Prolonged storage at room temperature may result in the Adhesive LCA-4LV resin crystallizing. Warming to 200°F will melt the resin and restore the adhesive to its original consistency.
  • Weigh the ingredients accurately so that each amount specified does not vary more than 5%.

Properties

Cured Properties
ValueUnitsTest Method / Conditions
Specific Gravity (at 200°F, 2hr)1.86ASTM D792-A
Specific Gravity (at 200°F, 8hr)1.86ASTM D792-A
Specific Gravity (1hr at 140°F + 48 hr at 160°F)1.86ASTM D792-A
Hardness (at 200°F, 2hr)91Shore DASTM D1706
Hardness (at 200°F, 8hr)92Shore DASTM D1706
Hardness (1hr at 140°F + 48 hr at 160°F)92Shore DASTM D1706
Lap Shear Strength (to aluminum, at -65°F, cured at 200°F, 2hr)2300psiASTM D1002
Lap Shear Strength (to aluminum, at -65°F, cured at 200°F, 8hr)2600psiASTM D1002
Lap Shear Strength (to aluminum, at -65°F, at 1hr at 140°F + 48 hr at 160°F)2200psiASTM D1002
Lap Shear Strength (to aluminum, at 77°F, cured at 200°F, 2hr)2300psiASTM D1002
Lap Shear Strength (to aluminum, at 77°F, cured at 200°F, 8hr)2500psiASTM D1002
Lap Shear Strength (to aluminum, at 77°F, cured at 1hr at 140°F + 48 hr at 160°F)2200psiASTM D1002
Lap Shear Strength (to aluminum, at 200°F, cured at 200°F, 2hr)2300psiASTM D1002
Lap Shear Strength (to aluminum, at 200°F, cured at 200°F, 8hr)2500psiASTM D1002
Lap Shear Strength (to aluminum, at 200°F, cured at 1hr at 140°F + 48 hr at 160°F)2100psiASTM D1002
Young's Modulus in Flexure (cured at 200°F, 2hr)1.6 x 10⁶ psiASTM D790
Young's Modulus in Flexure (cured at 200°F, 8hr)1.6 x 10⁶ psiASTM D790
Young's Modulus in Flexure (cured 1hr at 140°F + 48 hr at 160°F)1.6 x 10⁶ psiASTM D790
Glass Transition Temperature (at 200°F, 2hr)176°FDiff. Scanning Calorimetry
Glass Transition Temperature (at 200°F, 2hr)175°Fby Thermal Mech. Anal
Glass Transition Temperature (at 200°F, 8hr)217°FDiff. Scanning Calorimetry
Glass Transition Temperature (at 200°F, 8hr)199°Fby Thermal Mech. Anal
Glass Transition Temperature (1hr at 140°F + 48 hr at 160°F)199°FDiff. Scanning Calorimetry
Glass Transition Temperature (1hr at 140°F + 48 hr at 160°F)178°Fby Thermal Mech. Anal
Coefficient of Linear Thermal Expansion (between -65°F and 80°F, cured at 200°F, 2hr)15 x 10⁻⁶/°FASTM D83 I-A
Coefficient of Linear Thermal Expansion (between -65°F and 80°F cured at 200°F, 8hr)15 x 10⁻⁶/°FASTM D83 I-A
Coefficient of Linear Thermal Expansion (between -65°F and 80°F cured 1hr at 140°F + 48 hr at 160°F)16 x 10⁻⁶ /°FASTM D83 I-A
Coefficient of Linear Thermal Expansion (between 250°F and 300°F, cured 1hr at 140°F + 48 hr at 160°F)60 x 10⁻⁶/°FASTM D83 I-A
Coefficient of Linear Thermal Expansion (between 250°F and 300°F, cured at 200°F, 2hr)63 x 10⁻⁶/°FASTM D83 I-A
Coefficient of Linear Thermal Expansion (between 250°F and 300°F, cured at 200°F, 8hr)66 x 10⁻⁶/°FASTM D83 I-A
Coefficient of Linear Thermal Expansion (between 80°F and 135°F, cured 1hr at 140°F + 48 hr at 160°F)21 x 10⁻⁶/°FASTM D83 I-A
Coefficient of Linear Thermal Expansion (between 80°F and 135°F, cured at 200°F, 2hr)22 x 10⁻⁶ /°FASTM D83 I-A
Coefficient of Linear Thermal Expansion (between 80°F and 135°F, cured at 200°F, 8hr)20 x 10⁻⁶ /°FASTM D83 I-A
Weight Change in Water (after 24 hr immersion plus drying at 120°F cured at 200°F, 2hr)0.01%ASTM D590-A
Weight Change in Water (after 24 hr immersion plus drying at 120°F cured at 200°F, 8hr)0.005%ASTM D590-A
Weight Change in Water (after 24 hr immersion plus drying at 120°F cured 1hr at 140°F + 48 hr at 160°F)0.002%ASTM D590-A
Weight Change in Solvent (after 24 hr immersion in Methanol at 120°F, cured at 200°F, 2hr)0.007
Weight Change in Solvent (after 24 hr immersion in Toluene at 120°F, cured at 200°F, 2hr)0.004
Weight Change in Solvent (after 24 hr immersion in HCFC 141b at 120°F, cured at 200°F, 2hr)0.002
Weight Change in Solvent (after 24 hr immersion in Acetone at 120°F, cured at 200°F, 2hr)0.005
Weight Change in Solvent (after 24 hr immersion in n-Hexane at 120°F, cured at 200°F, 2hr)0.005
Weight Change in Solvent (after 24 hr immersion in Chloroform at 120°F, cured at 200°F, 2hr)0.23
Dielectric Constant (at 1 kHz, 77°F, cured at 200°F, 2h)5.21
Dielectric Constant (at 1 kHz, 200°F, cured at 200°F, 2h)5.47
Dissipation Factor (at 1 kHz, 200°F, cured at 200°F, 2h)0.008
Dissipation Factor (at 1 kHz, 77°F, cured at 200°F, 2h)0.003
Permeability to Water Vapor (at 21°C, cured at 200°F, 2h)1 x 10⁹g/cm-sec-atm
Volume Resistivity (at 77°F, cured at 200°F, 2h)20 x 10¹⁴ohm·cm
Volume Resistivity (at 200°F, cured at 200°F, 2h)0.7 x 10¹⁴ohm·cm
Weight Change in Solvent (after 24 hr immersion in Methanol at 120°F, cured at 200°F, 8hr)-0.007
Weight Change in Solvent (after 24 hr immersion in Toluene at 120°F, cured at 200°F, 8hr)-0.003
Weight Change in Solvent (after 24 hr immersion in HCFC 141b at 120°F, cured at 200°F, 8hr)-0.004
Weight Change in Solvent (after 24 hr immersion in Acetone at 120°F, cured at 200°F, 8hr)0.004
Weight Change in Solvent (after 24 hr immersion in n-Hexane at 120°F, cured at 200°F, 8hr)0.004
Weight Change in Solvent (after 24 hr immersion in Chloroform at 120°F, cured at 200°F, 8hr)0.001
Weight Change in Solvent (after 24 hr immersion in Methanol at 120°F, cured 1hr at 140°F + 48 hr at 160°F)-0.006
Weight Change in Solvent (after 24 hr immersion in Toluene at 120°F, cured 1hr at 140°F + 48 hr at 160°F)-0.002
Weight Change in Solvent (after 24 hr immersion in HCFC 141b at 120°F, cured 1hr at 140°F + 48 hr at 160°F)-0.009
Weight Change in Solvent (after 24 hr immersion in Acetone at 120°F, cured 1hr at 140°F + 48 hr at 160°F)0.001
Weight Change in Solvent (after 24 hr immersion in n-Hexane at 120°F, cured 1hr at 140°F + 48 hr at 160°F)0.002
Weight Change in Solvent (after 24 hr immersion in Chloroform at 120°F, cured 1hr at 140°F + 48 hr at 160°F)0.138
Recommended Mixing and Handling Parameters
ValueUnitsTest Method / Conditions
Parts by Weight of Activator Required (per 100 of adhesive)4.5
Viscosity of Mixed Adhesive (at room temperature)3000poise
Viscosity of Mixed Adhesive (at 160°F)100poise
Work Life (at room temperature)100minutes
Pot Life (tack-free time)240minutes

Safety & Health

Safety Information

For industrial use only! May cause injury to skin following prolonged or repeated contact. Use with adequate ventilation

Packaging & Availability

Regional Availability
  • Europe
  • India/MiddleEast/Africa (IMEA)
Packaging Information

LCA-4LV is available in quart and four fluid ounce kits, and Adhesive LCA-4LV/BA-9 is available in One-Shot kits

Storage & Handling

Shelf Life
2 years
Storage Conditions

The shelf life of these materials are greater than two years when stored in unopened containers at an average temperature below 85°F.