PERMABOND 922 High Temperature Resistant Cyanoacrylate
PERMABOND® 922 is the original allyl cyanoacrylate adhesive. It is a single part, moderate viscosity liquid that will cure rapidly at room temperature when pressed into a thin film between parts. PERMABOND 922 will cure to fixture strength in seconds on most surfaces and rapidly develops high strength with full cure obtained in 24 hours. The adhesive was specifically designed to meet the high temperature resistance required by certain applications. It provides excellent bond strength to steel, aluminum, and most metal surfaces. The cyanoacrylate will also adhere well to a wide variety of other materials, including most types of plastic and rubber.
In order to withstand high temperature environments, PERMABOND 922 was designed with a secondary curing mechanism that is activated at temperatures higher than 150°C (302°F). The procedure to activate this mechanism is as follows:
1) Bond parts and leave them clamped at room temperature for four hours.
2) Then heat the clamped parts at 150°C (302°F) for two hours.
3) After the two hours, the bond will be thermally resistant up to 250°C (482°)
Features and Benefits
Rapid development of high strength
Ease of use – no mixing or heat cure
Bonds most materials
100% reactive, no solvents
Approved to MIL-A-46050C Type V Class 3 (existing designs)
Cyanoacrylate adhesives are single component adhesives that polymerize rapidly when pressed into a thin film between parts. The moisture adsorbed on the surface initiates the curing of the adhesive. Permabond 922 develops strong bonds extremely fast and on a great variety of materials. These properties make PERMABOND cyanoacrylates the ideal adhesives for high-speed production lines.
Surface Preparation prior to bonding with Permabond 922
Surfaces should be clean, dry and grease-free before applying the adhesive. Use a suitable solvent (such as acetone or isopropanol) for the degreasing of surfaces. Some metals such as aluminum, copper, and its alloys will benefit from light abrasion with emery cloth (or similar), to remove the oxide layer.
Permabond 922 Directions for Use
1) Apply the adhesive sparingly to one surface.
2) Then, bring the components together quickly and correctly aligned.
3) Apply sufficient pressure to ensure the adhesive spreads into a thin film.
4) Do not disturb or re-align until sufficient strength is achieved, normally in a few seconds.
5) Remove any surplus adhesive with Permabond CA solvent, nitromethane, or acetone.
For difficult or porous surfaces using a Permabond activator is recommended. If bonding polypropylene, polyethylene, PTFE, or silicone, prime first with Permabond Polyolefin Primer (POP).
For more information, download the Technical Data Sheet.