ISO 11339 T-Peel Test Flexible to Flexible Bonded Assemblies

ISO 11339 peel test

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.

ISO 11339 Test Setup 

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

 

ISO 11339 peel test of adhesive bonds
Grips 

Pneumatic side action grips prevent specimen slippage by maintaining a constant clamping pressure throughout testing. They are available in capacities from 50N to 10kN, appropriate for the full range of adhesive strengths. Both advanced side action grips and pneumatic grips feature quick-change jaw faces that can be easily changed to accommodate different materials.

250 N Model | 2712-052
2710-112
500 N Model | 2710-112
Tips and Tricks
  • When performing an ISO 11339 test, the two adherends do not need to be the same material or thickness. However, if one adherend is more flexible than the other, attach the less flexible one to the moveable (top) grip.
  • Bluehill Universal software comes with with one free application module upon purchase. Each module contains pre-configured test methods and supporting documentation to assist with testing to various standards. ISO 11339 is included as part of the Adhesives module.
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