The pull-off method is a test method for evaluating adhesion. Applicable standards are ISO4624:2002, GB 5210-85, ASTM D 4514. There are two types of pull-off testing apparatus, mechanical and hydraulic/pneumatic.
Two types of adhesives are used in adhesion pull-off testing: epoxy adhesives and fast-drying cyanoacrylate adhesives. Epoxy adhesives can be tested after 24 hours at room temperature, while quick-drying cyanoacrylate adhesives can reach test strength after 15 minutes at room temperature, and it is recommended to test after 2 hours.
The scotch tape is mainly used to fix the aluminum alloy cylinder that has just been stuck to prevent the cylinder from deviating from the original bonding position due to the adhesive not being cured to a certain degree of fastness.

The cutter is used to cut the coating and adhesive around the aluminum alloy cylinder to the substrate to prevent the surrounding coating from affecting the precision of the adhesion. Cutting can be omitted if the dry film thickness is less than 150jm. Test the structure with the pull-off adhesion test.
The structure is as follows:
