Brief Introduction
LOCTITE AA 326 is a versatile acrylic adhesive and premium structural glue designed for fast, reliable bonding across a range of industrial and manufacturing applications. As a two-step, medium-viscosity formula, it delivers exceptional high shear strength and rapid curing, making it a go-to choice for projects that demand efficiency without compromising durability. This adhesive excels in bonding metals—particularly ferrites—and is engineered to meet the rigorous demands of industries such as automotive, electronics, and elevator manufacturing. Its user-friendly design, combined with robust performance, ensures strong, long-lasting bonds that withstand operational stress and environmental challenges.
| Applications | Structural bonding |
| Chemical basis / base | Methacrylate |
| Color | Amber, Yellow |
| Cure type | Activator cure, Anaerobic cure |
| FEA (finite element analysis) | Finite strain, Viscoelastic |
| Fixture time | 3.0 min. |
| Key characteristics | Mix: no mix required |
| Shear strength | 15.0 N/mm² |
| Viscosity, Brookfield - RVT, @ 25.0 °C Spindle 6, speed 20 rpm | 14000.0 - 22000.0 mPa·s (cP) |
| Viscosity, EN 12092 - MV, @ 25.0 °C Shear Rate 36 s⁻¹ | 10000.0 - 20000.0 mPa·s (cP) |
Core Features
Strong Adhesion to Diverse Materials
A key strength of LOCTITE AA 326 is its superior adhesion to ferrites and other metals, creating bonds that resist shear forces and maintain integrity under load. It also exhibits reliable adhesion to a variety of substrates, making it a flexible solution for multi-material bonding applications. This versatility eliminates the need for multiple adhesives, streamlining production processes.
Fast Cure & No-Mix Convenience
This structural glue features a rapid curing process, with a quick fixture time that allows for efficient assembly and reduced production downtime. Unlike many structural adhesives, it requires no mix required before application, simplifying workflow and minimizing the risk of human error. Its user-friendly application ensures consistent results, even for less experienced operators.
Thixotropic & Temperature-Resistant Design
LOCTITE AA 326 boasts a thixotropic property that prevents sagging or running during application, making it ideal for vertical or overhead bonding tasks. It also offers reliable temperature resistance, maintaining bond strength in environments with fluctuating temperatures up to moderate heat, ensuring long-term performance in various operational conditions.
Typical Uses
Magnet Bonding for Electric Motors
A primary application of this acrylic adhesive is magnet bonding in electric motors, particularly those used in elevator production. It creates strong, durable bonds between magnets and motor components, ensuring the motors operate efficiently and reliably under continuous use.
Metal-to-Metal Structural Bonding
LOCTITE AA 326 excels in metal-to-metal bonding for a wide range of industrial components, including automotive parts, electronic enclosures, and machinery assemblies. It replaces traditional fastening methods like welding or riveting in many cases, reducing weight and improving structural integrity.
Manufacturing & Assembly Applications
It is widely used in manufacturing settings for bonding components in appliances, power tools, and industrial equipment. Its fast cure time and high shear strength make it suitable for high-volume production lines, where efficiency and consistency are critical. It also finds use in repair and maintenance tasks, providing a quick and reliable solution for fixing broken metal components.
Precautions
Activation with Recommended Primer
LOCTITE AA 326 requires activation with LOCTITE SF 7649 primer for optimal performance. Ensure the primer is applied correctly and allowed to dry according to instructions before applying the adhesive. Using an incorrect primer or skipping this step can significantly reduce bond strength.
Safe Handling & Storage
Wear protective gloves, goggles, and a respirator when working with this adhesive to avoid skin contact, eye irritation, and inhalation of fumes. Store in a cool, dry place away from heat, sparks, and open flames. Keep containers tightly sealed when not in use to prevent contamination or premature curing.
Surface Preparation
For best results, clean and degrease all bonding surfaces thoroughly before application. Remove any dirt, rust, or oil, as contaminants can weaken the bond. Lightly abrading smooth surfaces can enhance adhesion, ensuring a stronger, longer-lasting bond.
FAQ
Do I need to mix LOCTITE AA 326 before use?
A1: No, this structural glue requires no mix required—it is ready to use straight from the container, simplifying application and reducing workflow time.
What is the recommended primer for this adhesive?
LOCTITE AA 326 must be activated with LOCTITE SF 7649 primer to achieve maximum bond strength. Using any other primer may not yield optimal results.
Can it bond materials other than metal?
While it is primarily designed for metal-to-metal bonding and adhesion to ferrites, it can bond some plastics and composites. For non-metallic substrates, test compatibility on a small sample first.
Is it suitable for high-temperature environments?
Yes, it offers reliable temperature resistance for moderate heat conditions, making it suitable for applications where components may be exposed to elevated temperatures during operation.
English
