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Description for Henkel Armstrong C-7 w/ Activator E
A low viscosity epoxy adhesive system designed to cure with heat. Once cured it produces an adhesive with a very rigid bond line. Exceptionally good chemical and solvent resistance.Brand Armstrong Chemical Resistance Exceptionally good, Chemical Resistance: Exceptionally good solvent resistance Application Type Bonding 1 Part or 2 Part 2-Part Material Form Liquid Substrate Al Industry Strain gauge transducers Manufacturer Henkel Chemistry Epoxy Cure Method 2 Parts Cure, Heat cure Cure Temperature (°C) 93, 100 Cure Time (min) 60, 180 Viscosity (cPs) 6,600, Low Color Clear, Colorless to yellow, Transparent, Colorless to yellow High Temperature Resistance (°C) 150 Low Temperature Resistance (°C) -40 Density (g/cm³) 0.042 lbs/cubic inch -
Technical Data for Henkel Armstrong C-7 w/ Activator E
Overview
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Chemical Resistance
- Chemical Resistance - Exceptionally good
- Chemical Resistance : Relative Solvent Resistance - Exceptionally good solvent resistance
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Application Type
- Adhesive - Bonding
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1 Part or 2 Part
- 2-Part
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Material Form
- Liquid
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Substrate
- Aluminum - Al
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Industry
- Electronics - Strain gauge transducers
- Industrial - Excellent part-to-part duplication
- Other - Other strain measuring elements
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Chemistry
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Cure Method
- Heat - Heat cure
- 2-Part Cure - 2 Parts Cure
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Color
- Clear / Transparent - Clear, Transparent, Colorless to yellow
- Yellow - Colorless to yellow
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Brand
- Armstrong
Specifications
Cure Specs
Cure Temperature (°C) 93, 100 Test Method Cure Time (min) 60, 180 Test Method Viscosity (cPs) 6,600, Low Test Method Work / Pot Time (min) 120 to 180, Long Test Method Mix Ratio 100:6 (by volume), 11.93:1 (by volume), 16.67:1 (by weight) Bond Strength
Shear Strength (psi) 2,100 Test Method Material Resistance
Dimensional Stability (%) Dimensional stability High Temperature Resistance (°C) 150 Test Method Low Temperature Resistance (°C) -40 Test Method Hardness
Shore D Hardness 85 Test Method Flexibility Rigid Other Properties
Glass Transition Temp (Tg) (°C) 33 Test Method Specific Gravity 1.130 Test Method Density (g/cm³) 0.042 lbs/cubic inch Business Information
Shelf Life Details Store below 25°C out of sunlight and in original unopened containers., 12 months at 25 °C; Specialty packaging may be less. Shelf Life Temperature (°F) 77, 77 Shelf Life (mon) 12 -
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Best Practices for Henkel Armstrong C-7 w/ Activator E
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Surface Preparation
Clean up uncured resin with suitable organic solvent such as MEK, acetone or other organic solvent.
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Mixing
Bring both components to room temperature prior to mixing. Cartridge format: Mixer should be attached keeping the cartridge vertical and any air pocket purged this way. After the mixer contains material, the mixer tip can be dropped to dispense pre-bleed amount. Attach a new static mixer with each cartridge, then pre-bleed the first 3 inches of dispensed material or until a uniform color is obtained. Maintain adequate velocity during dispensing to ensure complete mixing.
Bulk format: weigh and mix parts A and B accurately and thoroughly, scraping sides of container often. Do not pour from mixing container, transfer to a new container as residual unmixed material may cause a tacky spot on the surface of the casting. Maintain adequate velocity during dispensing to ensure complete mixing.
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Curing
Allow to cure undisturbed until product is fully gelled or tack-free to the touch.
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Cure Temperature Test Methods
Cure Temperature | Cure Time Test Method |
---|---|
93°C | Extrapolated from Henkel LDS |
100°C |
Cure Time Test Methods
Cure Time | Test Method |
---|---|
60 min | Extrapolated from Henkel LDS |
180 min |
Viscosity Test Methods
Viscosity | Test Method | Temperature |
---|---|---|
6,600 cPs | Extrapolated from Henkel LDS, Mixed | 25°C |
Low |
Work / Pot Time Test Methods
Work / Pot Time | Test Method | Temperature |
---|---|---|
120 to 180 min | Pot Life, defined as the time it takes for initial mixed viscosity to double, Extrapolated from Henkel LDS | 25°C |
Long |
Shear Strength Test Methods
Shear Strength | Type | Cure Time | Cure Temperature | Substrate | Test Method |
---|---|---|---|---|---|
2,100 psi | Lap Shear Strength | 0.05 min | 100°C | Al to Al | 0.005” bond line, 4535601224468/ASTM D1002 Tested on FPL etched Al |
High Temperature Resistance Test Methods
High Temperature Resistance | Test Method |
---|---|
150°C | Operating Temperature, Operating Temperature Range is based on average design requirements and is not intended as a guarantee of suitability for all applications operating at that temperature. |
Low Temperature Resistance Test Methods
Low Temperature Resistance | Test Method |
---|---|
-40°C | Operating Temperature,Operating Temperature Range is based on average design requirements and is not intended as a guarantee of suitability for all applications operating at that temperature. |
Shore D Hardness Test Methods
Shore D Hardness | Shore Hardness Test Method |
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85 | 455300006287/ASTM D2240 |
Glass Transition Temp (Tg) Test Methods
Glass Transition Temp (Tg) | Glass Transition Temperature (Tg) Test Method |
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33°C | 453560822409 by DSC |
Specific Gravity Test Methods
Specific Gravity | Temperature |
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1.130 | 25°C |