Permabond 102 is an ethyl cyanoacrylate adhesive renowned for its extremely fast fixture time and low viscosity. This colourless, single-component "super glue" polymerises rapidly through surface moisture, creating strong bonds on a wide variety of materials in mere seconds. Its low viscosity (70-90 cP) allows it to wick effectively into tight gaps (up to 0.15 mm or 0.006 in), making it perfect for precise bonding of close-fitting components. Australian manufacturers, repair technicians, model makers, and prototyping specialists rely on Permabond 102 for applications demanding speed and accuracy, especially when bonding plastics, rubbers (like Buna N), and metals.
Primer Information: For optimal bonding on difficult low-surface-energy plastics such as polypropylene (PP), polyethylene (PE), PTFE, or silicone rubber, pre-treatment of the surface with Permabond POP Polyolefin Primer is essential before applying Permabond 102.
Activator Information: On porous surfaces, or in very low humidity conditions sometimes found in drier Australian regions, cure speed may slow. To ensure rapid fixturing in these situations, consider using Permabond CSA or QFS 16 activators.
Cure Time: Permabond 102 achieves handling strength (fixture time) incredibly quickly: 5-10 seconds on Buna N Rubber, 7-10 seconds on ABS and PVC, and 10-15 seconds on Steel and Phenolic surfaces under typical conditions (23°C, 50% RH). This rapid cure dramatically speeds up assembly processes. Full mechanical strength develops within 24 hours.
Coverage Rate: As a cyanoacrylate, Permabond 102 is applied sparingly – typically one small drop per few square centimetres of bond area is sufficient. Coverage depends heavily on the application method and substrate smoothness, but a little goes a long way.
Application Temperature Range: While the adhesive itself cures at ambient temperatures, the cured bond performs reliably in service temperatures ranging from -55°C to 80°C (-65°F to 176°F). It can withstand brief exposures to higher temperatures (e.g., paint baking cycles) if the joint isn't highly stressed, making it versatile for various manufacturing processes.
Chemical Properties: Permabond 102 is an ethyl cyanoacrylate. It offers good resistance to non-polar solvents but is not recommended for prolonged exposure to strong oxidising materials or polar solvents. It will generally withstand a quick solvent wash without bond degradation, useful for cleaning processes post-assembly.
Q: How fast does Permabond 102 actually set? Can I reposition parts?
A: Permabond 102 sets extremely quickly, typically achieving handling strength in 5-15 seconds depending on the material. You have very little time for repositioning once parts make contact. Ensure accurate alignment *before* bringing surfaces together, especially in humid Australian conditions which can accelerate the cure.
Q: Do I always need to use the POP primer for plastics?
A: No, Permabond 102 bonds well directly to many common plastics like ABS, PVC, Polycarbonate, and Phenolic. However, for low-surface-energy plastics like Polypropylene (PP), Polyethylene (PE), PTFE (Teflon®), and Silicone rubber, you absolutely need to use Permabond POP Primer first to achieve a strong bond.
Q: What's the best way to prepare surfaces before using Permabond 102?
A: Surfaces must be clean, dry, and free from grease or oil. Degrease using a suitable solvent like Isopropanol (IPA) or acetone. For metals like aluminium or copper, lightly abrading the surface with emery cloth to remove the oxide layer can improve bond strength. Ensure all solvent is evaporated before applying the adhesive.
Q: Can I use Permabond 102 to fill gaps between parts?
A: No, Permabond 102 is very low viscosity and designed for tight-fitting parts with a maximum gap fill of only 0.15 mm (0.006 in). It will not effectively bridge larger gaps. For gap filling, consider a higher viscosity cyanoacrylate, a gel formulation, or a different adhesive technology like epoxy.
Q: Why does the adhesive sometimes create a white residue (blooming)?
A: This 'blooming' or 'frosting' is common with cyanoacrylates and is caused by adhesive vapours reacting with moisture and settling on the surface during a rapid cure. It's more likely with excess adhesive, poor ventilation, or when using activators. Minimise adhesive use, ensure good airflow, and avoid excessive activator application.
Q: How critical is the refrigerated storage? What happens if I don't?
A: Refrigerated storage (2-7°C) is critical for maximising shelf life, especially in Australia's often warm climate. Storing at room temperature significantly shortens the effective life of the adhesive, causing it to thicken or potentially cure prematurely in the bottle. Always allow it to reach room temp before opening.