Detailed explanation of using electronic universal testing machine to test the ring adhesive tape

This trial usesElectronic universal testing machineThe ring-shaped method is used to determine the initial adhesion of the adhesive tape, mainly by contacting the annular adhesive tape with a specified area of ​​test plate under the action of its own weight, and measuring the force of the tensile test plate of the adhesive tape to determine its initial adhesion.
The electronic universal material tester has a constant speed, the fixture separation speed is 300mm/min, and the force value error is no more than 1%.
The adhesive tape sample is made into a sample ring with a width of 24mm and a circumference of 175mm, with a number of at least 3.
Note: If the adhesive tape used is an unsupported adhesive tape, it is necessary to first transfer the sample to a 0.05mm PET film to make a sample ring. PET film serves as a support carrier for unsupported adhesive tape.
The test plate is made of stainless steel, with a thickness of 1.5mm-2.0mm, a width of 24mm and a length of 100mm, and should be able to accommodate a bonding area of ​​24mm×24mm.
In addition, before preparing the sample, the sample and test plate should be placed at a temperature of 23℃±1℃ and a relative humidity of 50%±5% for more than 24 hours.
Before testing, the test board should be cleaned with methanol and other related solutions. Repeat the cleaning three times to ensure that the cleaning agent is completely volatile. Each test should be cleaned with a new wipe material.
Specific operation steps for testing electronic universal material testing machine:
1. Install the fixture on the material testing machine and keep the test fixture horizontal. The test ring is in the contact position of the test plate
2. Set the small interval and interval of the link during the stretching process. Set the vertical spacing between the lower edge of the upper fixture and the surface of the test plate to be 25mm±1mm and 100mm±3mm, respectively.
3. Remove the release material covering the sample, turn the sample completely, be careful not to cause wrinkles. Bend the sample into a teardrop-shaped annular sample ring with an annular circumference of 127mm and has adhesive facing outward.

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