ARALDITE 2042
Harmonization Code : 3214.10.00 | Putty and other mastics | Resin cements, caulking compounds and other mastics
Main features
- One-Hour Room-Temperature Handling
- Convenient 1:1 Volume Mixing
- High-Elongation Flexible Bonding
Product Description
ARALDITE 2042 A/B Adhesive is a two-part, rapid-curing polyurethane adhesive for bonding selected plastics and assemblies with dissimilar coefficients of thermal expansion. The resin and hardener mix at 80:100 by weight or 1:1 by volume to form a pink adhesive with a typical three-minute pot life at 25 deg C for a 4 fl oz batch. Typical handling strength is reached in one hour at 25 deg C, while elevated-temperature schedules shorten handling time. The cured adhesive combines 250% tensile elongation with tested lap-shear performance on aluminum and Metton specimens, supporting flexible structural bonding where joint movement and impact resistance matter.
Key features
- Rapid handling schedule: Typical handling strength develops in one hour at 25 deg C and faster with the listed heat-cure schedules.
- Convenient volume mixing: A 1:1 resin-to-hardener volume ratio supports controlled preparation.
- Flexible cured profile: Typical tensile elongation reaches 250% after the stated cure.
Applications
Bonding selected polycarbonate, ABS, nylon, and Metton substrates, plus assemblies with dissimilar coefficients of thermal expansion.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Additional Information
As-supplied / before-processing properties
Typical component and mixed-system values; resin, hardener, and mixed states are identified separately.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Part A: white; Part B: red; mixed: pink | - | Visual; typical |
| Density | Part A: 1.10; Part B: 1.30; mixed: 1.20 | g/cm^3 | ASTM D792; typical |
| Viscosity | Part A: 50,000; Part B: 20,000; mixed: 50,000 | cP | ASTM D2393; 25 deg C; typical |
| Mixed pot life | 3 | min | ASTM D2471; 25 deg C; 4 fl oz batch; typical |
| Mix ratio, A:B | 80:100 by weight; 100:100 by volume | parts | Resin to hardener |
After-processing / final-state properties
Typical cured-system values. Standard lap-joint specimens were cured for 20 minutes at 100 deg C unless otherwise stated.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Tensile lap-shear strength | Aluminum: 1,450 (10); Metton: 800 (5.5) | psi (MPa) | ASTM D1002; tested configuration |
| Coefficient of thermal expansion | Below Tg: 13.5 x 10^-5; above Tg: 23 x 10^-5 | in/in/deg C | ASTM E831; typical |
| Glass-transition temperature | 86 (30) | deg F (deg C) | ASTM D4065; typical |
| Elongation at tensile break | 250 | % | ASTM D638; typical |
| Ultimate tensile strength | 2,100 (14.5) | psi (MPa) | ASTM D638; typical |
| Hardness | 85 | Shore D | ASTM D2240; typical |
