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Aerospace adhesive standards are applicable to the use of adhesive and sealant materials in aerospace vehicles. These standards address the preparation of sealant material specifications and aerospace recommended practices for sealing processes and related activities. For example: the sealing of integral fuel tanks. SAE International (SAE) has several technical committees (.doc download) that contribute to the development of aerospace adhesive standards. These standards are related to priming surfaces for adhesives application in an aerospace application.
This Aerospace Recommended Practice (ARP) describes the processing system and techniques for the surface preparation and priming of aluminum alloy parts for structural adhesive bonding to achieve optimum bondline durability, corrosion resistance, and manufacturing producibility. While this surface preparation has been developed and validated for two high strength aluminum alloys, 2024 and 7075, in the hardened condition it is expected to be applicable to other alloys and tempers. This surface preparation system has been validated for use with 180 degrees F (82 degrees C) and with 250 degrees F (121 degrees C) curing elastomer-modified epoxy adhesive and corrosion-inhibiting primer. The processes described herein are the result of laboratory evaluation of structural and durability performance.
The surface treatments described here have proven effective for producing a suitable surface for application of adhesive primers, films, or pastes prior to structural adhesive bonding operations.
This recommended practice establishes the procedures and requirements for cleaning titanium alloy parts prior to adhesive bonding operations. The surface treatments described herein have proven effective for producing a suitable surface for application of adhesive primers, films, or pastes prior to bonding operations.