The general application requirements of the shock absorber bumper are that the materials used meet the relevant requirements of national safety, health and environmental protection regulations, and the second is to ensure that the appearance quality of the shock absorber bumper has a uniform microporous structure, no voids, Large bubbles, impurities, cracks, induration, etc. or other defects that affect performance exist. The size and deviation of the shock absorber bumper should be within the allowable range and will not affect the normal use.
The specific can be detected in some ways. The first step is to perform the pretreatment. The samples should be taken from the same batch and should have the same quality. For the appearance quality inspection of the shock absorber bumper, it is usually first checked by visual inspection. The performance of the material should mainly be analyzed by several parameters: density, tensile strength and elongation at break, water resistance. Sex and so on.
For the performance test of the shock absorber bumper, the hydrolysis resistance should first be tested. The specific method is to compress the product by 50% and soak it in water of 80 °C ± 2 °C for 1000 h. For the compression set performance of the shock absorber bumper, the test is carried out according to the regulations, and the sample is prepared from the product or the test piece. The sample was compressed by 40% and then placed in a hot air aging tank at a temperature of 80 °C ± 2 °C for 22 h. After the test device was taken out from the incubator, it was kept in a compressed state and cooled at room temperature for 2 hours, and the test piece was taken out from the jig, and the height of the test piece was measured ten minutes later.