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Peel Fixture for ISO 813 Adhesion Strength of Rigid Rubber Substrates
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Introduction:
The ISO 813 method is used to determine adhesive strength between a vulcanized or thermoplastic rubber to a rigid substrate. The test is performed at a peel angle of 90° with a speed of 50 mm/min. The adhered rubber is pulled from the rigid substrate to measure the adhesive strength, also known as the average force divided by the specimen width.
The challenges of testing to this standard are:
Method of Test:
The 90° peel fixture is able to maintain this angle by using a low force sliding table that is adjusted throughout the test.
The fixture consists of a bearing mounted table, which is linked to the test system via a cable and pulley, as well as anchored on the back by a dampening coil spring.
As the crosshead is driven in the tensile direction, the cable pulls the table to maintain a constant 90° angle peel, and the coil spring keeps the table from reacting
to inertia caused by load peaks and troughs.
The ISO 813 method is used to determine adhesive strength between a vulcanized or thermoplastic rubber to a rigid substrate. The test is performed at a peel angle of 90° with a speed of 50 mm/min. The adhered rubber is pulled from the rigid substrate to measure the adhesive strength, also known as the average force divided by the specimen width.
The challenges of testing to this standard are:
- Maintaining 90° angle throughout the test
- Bandwidth and data rate to capture peaks and troughs
- Eliminating slippage throughout the test
Method of Test:
The 90° peel fixture is able to maintain this angle by using a low force sliding table that is adjusted throughout the test.
The fixture consists of a bearing mounted table, which is linked to the test system via a cable and pulley, as well as anchored on the back by a dampening coil spring.
As the crosshead is driven in the tensile direction, the cable pulls the table to maintain a constant 90° angle peel, and the coil spring keeps the table from reacting
to inertia caused by load peaks and troughs.