LCA-4
1 of 6 products in this brandLCA-4 is a highly filled gyro grade epoxy adhesive that has a low coefficient of thermal expansion, good dimensional stability, and excellent chemical resistance. It is proving useful in applications requiring bonding or hermetic sealing of metal, ceramic, glass and other substrates.
RTU Product Type: Epoxy Adhesive
Application Area: Avionic Components, Gyros, Gyroscopes
Compatible Substrates & Surfaces: Ceramic, Glass, Metal
Features: Chemical Resistant, Dimensional Stability, Low Coefficient of Thermal Expansion, Low Viscosity
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Type Document Name
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Technical Data SheetLCA-4 Technical Data Sheet
Enhanced TDS
Identification
- GBU
- RTU Product Type
- Categories
Applications
- Application Area
- Compatible Substrates & Surfaces
- Segment
Applications & Uses
- Usage Instructions
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- 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 redult in the Adhesive LCA-4 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 so that each amount specified does not vary more that 5%.
Features
- Ready-to-Use Product Features
Packaging & Availability
- Regional Availability
- Packaging Information
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- Adhesive LCA-4-4/BA-5 and LCA-4/BA-9 are available in quart and four fluid once kits
- Adhesive LCA-4/BA-9 is available in One-Stock kits
Properties
- Recommended Mixing and Handling Parameters
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Value Units Test Method / Conditions Activator BA-5 - - Activator required per hundred of adhesive (parts by weight) 4.5 - - Adhesive LCA-4 - - Pot Life (at room temperature) 100.0 minutes - Viscosity of Mixed Adhesive (at 160°F) 130.0 poise - Viscosity of Mixed Adhesive (at room temperature) 5300.0 poise - Work Life (at room temperature) 60.0 minutes - - Cured Properties
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Value Units Test Method / Conditions Coefficient of Linear Thermal Expansion (between -65°F and 80°F, Cured Condition : 1 hr at 140°F + 16 hr at 160°F) 15 x 10⁻ ⁶ / °F ASTM D831-A Coefficient of Linear Thermal Expansion (between -65°F and 80°F, Cured Condition : at 200°F, 2 hr) 15 x 10⁻ ⁶ / °F ASTM D831-A Coefficient of Linear Thermal Expansion (between -65°F and 80°F, Cured Condition : at 200°F, 8 hr) 15 x 10⁻ ⁶ / °F ASTM D831-A Coefficient of Linear Thermal Expansion (between 250°F and 300°F, Cured Condition : 1 hr at 140°F + 16 hr at 160°F) 64 x 10⁻ ⁶ / °F ASTM D831-A Coefficient of Linear Thermal Expansion (between 250°F and 300°F, Cured Condition : at 200°F, 2 hr) 62 x 10⁻ ⁶ / °F ASTM D831-A Coefficient of Linear Thermal Expansion (between 250°F and 300°F, Cured Condition : at 200°F, 8 hr) 64 x 10⁻ ⁶ / °F ASTM D831-A Coefficient of Linear Thermal Expansion (between 80°F and 135°F, Cured Condition : 1 hr at 140°F + 16 hr at 160°F) 20 x 10⁻ ⁶ / °F ASTM D831-A Coefficient of Linear Thermal Expansion (between 80°F and 135°F, Cured Condition : at 200°F, 2 hr) 21 x 10⁻ ⁶ / °F ASTM D831-A Coefficient of Linear Thermal Expansion (between 80°F and 135°F, Cured Condition : at 200°F, 8 hr) 21 x 10⁻ ⁶ / °F ASTM D831-A Dielectric Constant (at 200°F, at 1 kHz, Cured Condition : at 200°F, 2 hr) 5.69 - - Dielectric Constant (at 77°F, at 1 kHz, Cured Condition : at 200°F, 2 hr) 5.37 - - Dissipation factor (at 200°F, at 1 kHz, Cured Condition : at 200°F, 2 hr) 0.007 - - Dissipation factor (at 77°F, at 1 kHz, Cured Condition : at 200°F, 2 hr) 0.004 - - Flexural Strength (1 hr at 140°F + 16 hr at 160°F) 11000.0 psi ASTM D790 Flexural Strength (at 200°F, 2 hr) 12000.0 psi ASTM D790 Flexural Strength (at 200°F, 8 hr) 11000.0 psi ASTM D790 Glass Transition Temperature (1 hr at 140°F + 16 hr at 160°F) 203.0 °F Differential Scanning Calorimetry Glass Transition Temperature (1 hr at 140°F + 16 hr at 160°F) 183.0 °F Thermal Mechanical Analysis Glass Transition Temperature (at 200°F, 2 hr) 186.0 °F Differential Scanning Calorimetry Glass Transition Temperature (at 200°F, 2 hr) 184.0 °F Thermal Mechanical Analysis Glass Transition Temperature (at 200°F, 8 hr) 221.0 °F Differential Scanning Calorimetry Glass Transition Temperature (at 200°F, 8 hr) 205.0 °F Thermal Mechanical Analysis Hardness (1 hr at 140°F + 16 hr at 160°F) 92.0 - ASTM DI 2240 Hardness (1 hr at 140°F + 16 hr at 160°F) 92.0 - Shore D Hardness (at 200°F, 2 hr) 92.0 - ASTM DI 2240 Hardness (at 200°F, 2 hr) 92.0 - Shore D Hardness (at 200°F, 8 hr) 92.0 - ASTM DI 2240 Hardness (at 200°F, 8 hr) 92.0 - Shore D Lap Shear Strength to Aluminium (at -65°F, Cured Condition : 1 hr at 140°F + 16 hr at 160°F) 2300.0 psi ASTM D1002 Lap Shear Strength to Aluminium (at -65°F, Cured Condition : at 200°F, 2 hr) 2100.0 psi ASTM D1002 Lap Shear Strength to Aluminium (at -65°F, Cured Condition : at 200°F, 8 hr) 2400.0 psi ASTM D1002 Lap Shear Strength to Aluminium (at 200°F, Cured Condition : 1 hr at 140°F + 16 hr at 160°F) 2200.0 psi - Lap Shear Strength to Aluminium (at 200°F, Cured Condition : at 200°F, 2 hr) 2400.0 psi - Lap Shear Strength to Aluminium (at 200°F, Cured Condition : at 200°F, 8 hr) 2500.0 psi - Lap Shear Strength to Aluminium (at 75°F, Cured Condition : 1 hr at 140°F + 16 hr at 160°F) 2400.0 psi ASTM D1002 Lap Shear Strength to Aluminium (at 75°F, Cured Condition : at 200°F, 2 hr) 2400.0 psi ASTM D1002 Lap Shear Strength to Aluminium (at 75°F, Cured Condition : at 200°F, 8 hr) 2400.0 psi ASTM D1002 Linear Shrinkage upon Cure (at 200°F, 2 hr, Condition : at room temperature, apparent shrinkage, dimensions of speciemen : mold) 0.2 - - Specific Gravity (1 hr at 140°F + 16 hr at 160°F) 1.87 - ASTM D792-A Specific Gravity (at 200°F, 2 hr) 1.86 - ASTM D792-A Specific Gravity (at 200°F, 8 hr) 1.86 - ASTM D792-A Storage Temperature 85.0 °F - Volume Resistivity (at 200°F, Cured Condition : at 200°F, 2 hr) 0.4 x 10¹⁴ ohm-cm - Volume Resistivity (at 77°F, Cured Condition : at 200°F, 2 hr) 37 x 10¹⁴ ohm-cm - Weight Change (after 24 hr immersion in HCFC 141b + drying at 120°F for 24 hrs, Cured Condition : 1 hr at 140°F + 16 hr at 160°F) 0.0 % - Weight Change (after 24 hr immersion in HCFC 141b + drying at 120°F for 24 hrs, Cured Condition : at 200°F, 2 hr) -0.002 % - Weight Change (after 24 hr immersion in HCFC 141b + drying at 120°F for 24 hrs, Cured Condition : at 200°F, 8 hr) 0.002 % - Weight Change (after 24 hr immersion in acetone + drying at 120°F for 24 hrs, Cured Condition : 1 hr at 140°F + 16 hr at 160°F) -0.008 % - Weight Change (after 24 hr immersion in acetone + drying at 120°F for 24 hrs, Cured Condition : at 200°F, 2 hr) -0.015 % - Weight Change (after 24 hr immersion in acetone + drying at 120°F for 24 hrs, Cured Condition : at 200°F, 8 hr) -0.006 % - Weight Change (after 24 hr immersion in chloroform + drying at 120°F for 24 hrs, Cured Condition : 1 hr at 140°F + 16 hr at 160°F) 0.243 % - Weight Change (after 24 hr immersion in chloroform + drying at 120°F for 24 hrs, Cured Condition : at 200°F, 2 hr) 0.127 % - Weight Change (after 24 hr immersion in chloroform + drying at 120°F for 24 hrs, Cured Condition : at 200°F, 8 hr) 0.007 % - Weight Change (after 24 hr immersion in methanol + drying at 120°F for 24 hrs, Cured Condition : 1 hr at 140°F + 16 hr at 160°F) 0.008 % - Weight Change (after 24 hr immersion in methanol + drying at 120°F for 24 hrs, Cured Condition : at 200°F, 2 hr) -0.003 % - Weight Change (after 24 hr immersion in methanol + drying at 120°F for 24 hrs, Cured Condition : at 200°F, 8 hr) 0.0 % - Weight Change (after 24 hr immersion in n - hexane + drying at 120°F for 24 hrs, Cured Condition : 1 hr at 140°F + 16 hr at 160°F) 0.008 % - Weight Change (after 24 hr immersion in n - hexane + drying at 120°F for 24 hrs, Cured Condition : at 200°F, 2 hr) -0.01 % - Weight Change (after 24 hr immersion in n - hexane + drying at 120°F for 24 hrs, Cured Condition : at 200°F, 8 hr) -0.003 % - Weight Change (after 24 hr immersion in toluene + drying at 120°F for 24 hrs, Cured Condition : 1 hr at 140°F + 16 hr at 160°F) 0.0 % - Weight Change (after 24 hr immersion in toluene + drying at 120°F for 24 hrs, Cured Condition : at 200°F, 2 hr) -0.002 % - Weight Change (after 24 hr immersion in toluene + drying at 120°F for 24 hrs, Cured Condition : at 200°F, 8 hr) 0.002 % - Weight Change (after 24 hr immersion in water + drying at 120°F for 24 hrs, Cured Condition : 1 hr at 140°F + 16 hr at 160°F) -0.01 % - Weight Change (after 24 hr immersion in water + drying at 120°F for 24 hrs, Cured Condition : at 200°F, 2 hr) -0.01 % - Weight Change (after 24 hr immersion in water + drying at 120°F for 24 hrs, Cured Condition : at 200°F, 8 hr) -0.01 % - Weight Change (after 24 hr immersion in water, Cured Condition : 1 hr at 140°F + 16 hr at 160°F) -0.01 % ASTM D590-A Weight Change (after 24 hr immersion in water, Cured Condition : at 200°F, 2 hr) -0.01 % ASTM D590-A Weight Change (after 24 hr immersion in water, Cured Condition : at 200°F, 8 hr) -0.01 % ASTM D590-A Young's Modulus in Flexure (1 hr at 140°F + 16 hr at 160°F) 1.6 x 10⁶ psi ASTM D790 Young's Modulus in Flexure (at 200°F, 2 hr) 1.6 x 10⁶ psi ASTM D790 Young's Modulus in Flexure (at 200°F, 8 hr) 1.5 x 10⁶ psi ASTM D790
Storage & Handling
- Storage Information
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The shelf life of these materials are greater than two years when stored in unopened containers at an average temperature below 85°F.
- Shelf Life
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min. 2 years