LOCTITE AA 332
Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.
Main features
- High-Viscosity Magnet Bonding
- Fast Activator-Assisted Fixture
- Impact- and Peel-Resistant Bonds
Product Description
LOCTITE AA 332 is a one-component, high-viscosity modified acrylic structural adhesive developed for metal and permanent-magnet bonding. It is used with separately supplied Activator 7387 for room-temperature cure and can also be heat cured with the appropriate time-and-temperature schedule. With activator on one side of a steel joint, fixture is 3 minutes or less at a 0.05 mm gap. After 24 hours at 22 deg C with Activator 7387 on one side, lap shear on steel is at least 11 N/mm^2; typical cured tensile strength is 17.9 N/mm^2 and peel strength is 3.5 N/mm. Performance varies with gap, surface preparation, activator use, and cure conditions.
Key features
- High-viscosity application control: Brookfield RVF viscosity is 75,000 to 130,000 mPa s (cP) at 25 deg C with spindle 7 at 20 rpm.
- Fast thin-gap fixture: Fixture is 3 minutes or less at a 0.05 mm steel gap with Activator 7387.
- Impact and peel resistance: Forms tough, durable bonds with impact and peel resistance for magnet bonding.
Applications
Structural metal-to-metal bonding, including magnet bonding and electric-motor assemblies.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Other Properties
Additional Information
As-supplied / before-processing properties
The adhesive is the page entity; Activator 7387 is separately supplied and required for the cited room-temperature cure process.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Opaque light yellow to dark amber | Uncured | |
| Specific gravity | 0.97 | 25 deg C | |
| Brookfield viscosity | 75,000 to 130,000 | mPa s (cP) | 25 deg C; RVF; spindle 7; 20 rpm |
After-processing / final-state properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Shore hardness | 69 | Durometer D | ISO 868; cured material |
| Tensile modulus | 950 | N/mm^2 | ISO 527-2; cured material |
| Tensile strength at break | 17.9 | N/mm^2 | ISO 527-2; cured material |
| Lap shear strength | 11 minimum | N/mm^2 | Steel; 0.05 mm gap; Activator 7387 on one side; 24 h at 22 deg C |
| 180 deg peel strength | 3.5 | N/mm | ISO 8510-2; steel; 24 h at 22 deg C; Activator 7387 on one side |
