Loctite AA 324 Structural Adhesive 50ml
Available
Loctite AA 324, also known as Loctite 324, is a one-component structural acrylic adhesive based on urethane methacrylate ester. It is a transparent light amber liquid of medium viscosity and needs no mixing.
It is a general purpose structural adhesive formulated for toughness and impact strength, and it cures anaerobically with Activator 7387. Typical uses include electric motors and loudspeaker hardware, for bonding ferrites and plated materials.
Where this product is used
- General purpose structural bonding where toughness and impact strength matter
- Electric motors
- Loudspeaker hardware, for bonding ferrites and plated materials
- Bonding with Activator 7387 on one or both surfaces, tested on grit-blasted steel
- Joints with a recommended bondline of 0.1mm, up to a maximum of 0.5mm
Features
- One component, no mixing
- Urethane methacrylate ester chemistry, formulated for toughness and impact strength
- Cures anaerobically with Activator 7387
- Transparent light amber liquid, medium viscosity at 17,000 mPa·s
- 18 N/mm² lap shear on grit-blasted steel at a 0mm gap (24 h at 23 °C, activator on one side)
- Tensile strength 34 N/mm² with 170 % elongation at break (cured 7 days at 23 °C)
- Full strength typically in 24 to 72 hours
Key specifications
| Specification | Detail |
|---|---|
| Brand | Loctite |
| Chemical type | Urethane methacrylate ester |
| Colour | Transparent light amber liquid |
| Components | One component, no mixing |
| Cure | Anaerobic, with Activator 7387 |
| Viscosity (Brookfield RVF, 25 °C, spindle 6, 20rpm) | 17,000 mPa·s |
| Specific gravity (23 °C) | 1.06 |
| Recommended bondline | 0.1mm; maximum 0.5mm with activator on both surfaces |
| Lap shear, 0mm gap (grit-blasted steel, 24 h at 23 °C, ISO 4587, Activator 7387 on one side) | 18 N/mm² |
| Lap shear, 0.5mm gap (same conditions) | 11 N/mm² |
| Tensile strength (cured 7 days at 23 °C, ISO 527-2) | 34 N/mm² |
| Tensile modulus (cured 7 days at 23 °C) | 614 N/mm² |
| Elongation at break (ISO 527-3) | 170 % |
| Storage | 8 °C to 21 °C, unopened, dry |
Choosing the right option
Loctite AA 324 and Loctite AA 330 Structural Acrylic Adhesive Cartridge 300ml are both activator-cured acrylics with a recommended bondline of 0.1mm. The cartridge grade is the higher viscosity of the two.
The activator for Loctite AA 324 is Loctite 7387 Activator 100ml.
See also: Loctite AA 330 Structural Acrylic Adhesive Cartridge 300ml, Loctite 7387 Activator 100ml, Loctite 3801 Epoxy Adhesive Syringe 29.5ml, Loctite HY 4070 Universal Repair Hybrid Adhesive 11g.
Using it
Apply Activator 7387 to one surface and the adhesive to the other, then assemble and hold clamped until the adhesive has fixtured. The recommended bondline gap is 0.1mm.
For larger gaps, up to a maximum of 0.5mm, or for a faster cure, apply the activator to both surfaces and assemble within 1 minute.
Cure speed depends on the materials, the gap and the temperature. Full strength is typically reached in 24 to 72 hours.
Typically 24 to 72 hours, depending on the bond gap, the materials and the conditions.
Storage and handling
Store unopened, in a dry place, between 8 °C and 21 °C. Storage below 8 °C or above 28 °C can adversely affect the properties of the product.
Limits and safety
Not normally recommended for plastics, particularly thermoplastics, where stress cracking could result. Not recommended for pure oxygen or oxygen-rich systems, or as a sealant for chlorine or other strong oxidising materials. Read the safety data sheet before use.
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