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What is the difference between 180 and 90 peel test?
Latest company news about What is the difference between 180 and 90 peel test?

What is the difference between 180° and 90° peel test?

latest company news about What is the difference between 180 and 90 peel test?  0

The peel adhesion test is used to determine the force required to de-bond two components joined by an adhesive. The test result, also known as bond strength, is generally represented as N (force to de-bond) / 25mm or 50mm (depending on specimen width).
The peel adhesion test can be used for:
  1. Quality control – where the glued component needs to meet a minimum bond strength value.
  2. Adhesive curing – determine the optimum temperature and pressure required to give the maximum bond strength.
  3. Adhesive behaviour – determine the effect of temperature, humidity and environmental conditions can have on the bond strength.
Applications: Adhesives are widely used in various industries including textiles, fabrics, labels, laminates and composites. Peel adhesion testing is applicable to almost all components which are bonded together using adhesives.
90° peel test
In 90 degree peel test, a constant 90° angle is maintained whilst the two glued components are peeled apart. The average load required to separate the two, over the length of the specimen is recorded and expressed as N/25mm. Other methods of expressing test results include average peak/trough loads and customer defined calculations.
180° peel test
In 180-degree peel test, a constant 180° angle is maintained whilst the two glued components are peeled apart. The average load required to separate the two, over the length of the specimen is recorded and expressed as N/25mm. Other methods of expressing test results include average peak/trough loads and customer-defined calculations.
 
 
At a 180º angle, the result of the peel test is influenced by the thickness and degree of elasticity degree of the PSA tape. At a 90º angle, the result of the peel test is less influenced by these characteristics of the tape and is more reliable and consistent for the evaluation of adhesion and cohesion.
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Pub Time : 2023-06-25 14:10:28 >> News list
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