Bonding Rubber To Anodize Aluminum

Aluminum alloy part w anodized surface 2003.

Bonding rubber to anodize aluminum.

We are seeking a type of glue to bond aluminium parts in fact we have aluminium strips and we want to bond them with aluminium tubes. 10 31 2019 12 54 pm 2. Question we re having a problem with glue not adhering to anodized parts made from extruded 6063 t6 aluminum and finished with heavy etch and black anodize per mil a 8625 type ii class 1. For very high strength use a metal bonder such as 170 or the original 910.

We prefer the glue to be dried in ambient temperature. The problem is no glue will stick to the aluminum not even gorilla glue very well. The aluminum is well slick because that is the finish it ends up with. All grades will bond aluminum well.

The problem parts come in batches something like a 25 50 fallout rate when we normally have about 0 5 1 fallout. The anodic coating is integral to the base metal and the porous anodic film is wondrously receptive to primers and adhesives. Anodizing for pre prep bonding bridges the gap between the metallic and composite worlds as it provides a superior surface in many applications on aluminum components for bonding to these composites. George zafiropoulos kallithea athens greece.

Cyanoacrylate also known as instant adhesives super glue crazy glue ca glue etc. Modern adhesive technologies utilize both singleand two coat adhesive formulations with the preference depending upon the service needs of the bonded assembly. Because i ve already googled myself so i m asking for someone that s had success with strong bonding between anodized aluminum surfaces or bare aluminum surfaces not just someone to tell me to use super glue because you think it will work. Thicker aluminum oxide layer increased porosity and increased strength brittleness.

Anodized aluminum is an electrolytically induced passivation process where several physical changes occur to the surface including. Bonding anodized aluminum 3m vhb tape and primer ipa only primer 94 primer ap111 anodizing provides higher strength bonding with epoxy than simply abrading bare aluminum strength retention of epoxy bond is very good anodizing provides a great surface for 3m vhb tape adhesion psa tape previous testing. Historically several bonding methods have been employed within the rubber industry in an effort to achieve a dependable and durable rubber to metal bond. Although aluminum is a common bonding substrate for epoxy anodized aluminum can present its own set of bonding problems.

Recommending electrical bonding techniques is outside the scope of the service that metal finishings ltd offer but below are some of the approaches that are common. For bonding aluminum to dissimilar surfaces with different coefficients of thermal expansion consider toughened 737. I do not know for sure what kind of rubber it is but it is black and happens to be electrically conductive.