ISO 11339 T-Peel Test Flexible to Flexible Bonded Assemblies
ISO 11339 measures the comparative peel properties of adhesive bonds between flexible adherends by using a T-peel test. The test is referred to as a “T-peel” due to the shape the two flexible adherends form as they are pulled apart. Average peel strength for each specimen type and average, minimum, and maximum peeling loads for each individual specimen are the primary results of interest. Manufacturers use this standard for quality control in a wide range of industries as it is primarily intended for determining relative peel resistance between individual specimens or different types of adhesives. Direct comparison of different adhesives can only be made when specimen construction and test conditions are identical.
For peel tests, it is critical to use a high data acquisition rate to capture all peaks and troughs in order to ensure all test events are represented in the results. Too low of a bandwidth may “dull” the results and lead to artificially low peel strength values. For this reason, we recommend an Instron 6800 series test frame, which enables a data capture rate of up to 5 kHz. System capacity will depend on the strength of the adhesive; however, many tests to this standard will fall below 5 kN capacity, making a single column frame (68SC) ideal. If the adhesive requires a higher capacity system, Instron’s dual column table model frames are available up to 50 kN.
| ISO 11339 Test Setup | |
|---|---|
| 1) | 6800 Series Universal Testing System |
| 2) | Bluehill Universal Software |
| 3) | 2580 Series Load Cell |
| 4) | 2712-041 (1 kN) Pneumatic Side-Action Grips |
