Permabond still manufactures the original cyanoacrylate formulation Permabond 910 (previously Eastman 910). The name 910, comes from counting to 10 as the inventor determined that the product sets between 9 and 10 seconds.
Since that original methyl cyanoacrylate formulation, Permabond has expanded the versatility of its cyanoacrylate product line to include a tremendous number of formulations, each with unique characteristics that overcome specific design and manufacturing challenges. Including more methyl cyanoacrylates, and also, ethyl cyanoacrylates, alkoxy alkyl cyanoacrylates, and more.
Permabond cyanoacrylates are ideal for bonding materials such as metal, rubber, composite, plastic, silicone, and many more substrates. New formulations continue to eliminate design challenges encountered by engineers trying to bond difficult plastics such as polypropylene, polyethylene, PTFE, and other polyolefins. Permabond’s high-performance industrial cyanoacrylate adhesives that are available provide very fast set times, a range of viscosity choices as well as non-blooming / low odor formulations, and products with very high-temperature resistance.
Simply put, cyanoacrylate is an acrylic monomer that cures to a ‘plastic’.
Permabond’s cyanoacrylate adhesives (also called instant adhesives or super glue) cure by reacting to very small amounts of moisture on the surface of the components being bonded. That’s it – no ovens, no mixing, no specialty curing equipment – they simply cure from the residual moisture naturally occurring on the surface of the components. Permabond recognizes that in applications such as wire tacking and tamper-proofing the adhesive is not compressed between two surfaces. For this type of application where the adhesive is exposed, activators are available. Simply spray the activator on the exposed cyanoacrylate to instantly cure it. Cyanoacrylate activators can also be used on very dry or acidic parts or to facilitate cure prior to wicking into porous substrates.
Whether you are using cyanoacrylates for bonding, sealing, tamper-proofing, wire tacking, or simply as a manufacturing aid while you wait for another adhesive to set, Permabond’s research and development team continually push the limits of cyanoacrylate technology.
Highlights of a few products follow …
Permabond products 919, 920, and 922 resist up to 250°C (482°F) after a secondary heat cure. Permabond 825 uses patented technology and offers the highest temperature resistance the technology will withstand 200°C (390°F) without a secondary heat cure.
Permabond has many very high viscosity cyanoacrylates and offers a true thixotropic gel adhesive. This thixotropic gel was specially formulated for applications that require the adhesive to stay in place even on vertical surfaces. The gel is also surface insensitive so it bonds a wide variety of substrates including acidic substrates.
Blooming can be seen as a fine white residue that surrounds the bond area. Permabonds 940 series is non-blooming and virtually odor-free. Permabond’s chemists perfected the low odor technology so the adhesives are fast curing and provide high strength to a variety of surfaces.
By nature, cyanoacrylates are not incredibly impact resistant. Permabond’s toughened grades, Permabond 731, 735, and 737 provide the ultimate impact and peel resistance. They were initially designed for flexible substrates but the added flexibility and toughness of these products provide even greater shear strength on rigid materials like steel. Permabond 735 and 737 are opaque black and Permabond 731 is crystal clear.
Permabond 2011 Gel is listed on the NSF non-food compounds registry. Permabond 2011 is a non-sag, non-drip, thixotropic gel that forms strong bonds to metal, plastics, elastomers, ceramics, and wood. This product has excellent gap-fill capability, {(0.50mm) 0.020 in} and develops strength rapidly. Handling time can be achieved in less than 10 seconds. Once fully cured the bonds are high temperature resistant {(-55 to +120°C) -65 to +250°F} and have good resistance to non-polar solvents. In addition to Permabond 2011 now registered as NSF S4, Permabond has several products listed to NSF/ANSI 61 for potable water as well as epoxies that comply with the FDA Food Grade Codes CFR 175.105 and 175.300.
101 – Wicking type, plastic bonding
2010 – Thixotropic, maximum gap fill
240 – Good flow control, plastic bonding
268 – Fast curing, good gap fill
731 – Excellent peel, shear, and impact strength – clear
737 – Excellent peel, shear, and impact strength – black
791 – Surface insensitive, very fast set
792 – Surface insensitive, very fast set, higher temperature resistance
910 – The original – general purpose, metal bonding
919 – Resists 250 C after post cure – wicking type
920 – Resists 250 C after post cure
922 – Resists 250 C after post cure – max gap fill
940 – Low odor & non-blooming, wicking type
943 – Low odor & non-blooming, general purpose
