180GradSchälversuch

The 180GradSchälversuch, also known as the 180-degree peel test or T-peel test, is a standard mechanical test used to measure the adhesion strength between two materials. This test is particularly common for evaluating the peel strength of flexible laminates, coatings, adhesives, and tapes.

The procedure involves preparing a sample where two materials are bonded together along a specific width. One end of the bonded strip is then clamped or gripped, and the other material is peeled away from it at a constant rate of speed. The peeling angle is maintained at approximately 180 degrees, forming a T-shape with the peeling strip.

During the test, the force required to maintain this peeling action is continuously measured. This force, when divided by the width of the peeled strip, gives the peel strength, typically expressed in units of force per unit width (e.g., N/mm or lb/in). Higher peel strength values indicate a stronger bond between the two materials.

The 180GradSchälversuch is valuable for quality control, material development, and failure analysis. It helps engineers and scientists understand how well different materials will delaminate under tensile stress, providing crucial data for product design and manufacturing processes. Factors influencing the results include the adhesive properties, substrate material, surface preparation, and the rate at which the peeling occurs.