Test method for impact resistance of anticorrosive layer of polyethylene adhesive tape

by:Yourijiu     2021-07-30









Test method for impact resistance of anticorrosive layer of polyethylene adhesive tape







The equipment required for this test shall meet the following requirements:







a) Impact testing machine: Mainly includes: impact hammer vertical guide tube, the inner wall of the tube is smooth to ensure free fall of impact hammer; impact hammer spherical punch diameter 25mm; horizontal sample tube holder.



b) Electric spark leak detector: 0~30kV;



c) Thickness gauge: 0~5mm.







C.2 Specimen size







The size of the test piece of the test pipe section is DN100mm×350mm×3mm. , There are 3 test pieces in each group.







C.3 The test procedure should meet the following requirements:







a) Place the test piece at 23℃±2℃ for at least 2h.



b) Place the test piece on the horizontal test piece holder of the impact testing machine, and ensure that the impact hammer is perpendicular to the surface of the test piece.



c) Adjust the impact energy to the specified value, and impact the test piece. Each test piece is impacted 10 times, at least 30mm between two points.







C.4 Test results







According to the voltage specified in 7.4 for leak detection, 10 shocks are passed without any leakage point.

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