PU adsorption pad is a commonly used adsorption material, which is used to remove pollutants and odors in the air and can effectively improve indoor air quality. The service life of PU adsorption pad is related to the use environment, frequency of use, types of adsorption substances and other factors. Generally, it is necessary to test the service life regularly, so as to replace the pad in time and ensure its adsorption effect and use effect. The following are the steps of the life test method of PU adsorption pad:

1. Prepare test equipment: it is necessary to prepare precision balance, closed container, record form, etc.

2. Determine the examination time and conditions: determine the examination time and conditions according to the actual situation. Generally, it is recommended to carry out the test for at least 24 hours, and the test environment should be the same as the actual use environment.

3. Weigh the floor mat: First, put the clean PU absorbent floor mat on the precision balance and record the initial weight of the floor mat.

4. Put the floor mat in a closed container: put the used PU absorbent floor mat in a closed container to ensure that the air in the container is the same as the actual use environment.

5. Measure the weight of the floor mat: after the test, take out the PU absorbent floor mat, put it on the precision balance again, and record the weight of the floor mat.

6. Calculate the loss rate of the mat: Calculate the loss rate of the mat according to the initial weight of the mat and the weight after the test. Generally speaking, if the loss rate of summer sleeping mat exceeds 20%! ~ (lack) 30%! The (missing) cushion needs to be replaced.

It should be noted that the life test method of PU adsorption pad may be different due to different manufacturers and models. It is recommended to read the relevant instructions carefully before the test to ensure correct operation. At the same time, the PU adsorption pad should be replaced regularly to ensure its adsorption effect and use effect.