薄膜测试装置

The Film Support Rig allows the measurement of the resilience of fine films. Prior to performing the test, the sample is placed over a hole in a raised perspex platform. A top plate prevents the sample from slipping during testing. The test is then carried out as the arm of the texture analyser brings a 5mm stainless steel ball probe down into the aperture. The maximum force to rupture the film is recorded and is referred to as the burst strength of the strip.



The resilience and relaxation properties of the film can also be measured. Resilience can be assessed by depressing the film surface to a chosen distance before retracting the ball probe. The property is calculated using a ratio of the work of compression and work of withdrawal. Similarly, relaxation can be measured with the addition of a hold period within the test to allow the product's recovery to be evaluated. Both these properties broaden the application of the Film Support Rig. Burst strength, resilience and relaxation are important factors in determining the mechanical properties of the product, allowing manufacturers to optimize product structure and formulation.

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