Method for measuring weigh of two-sided coated plate film
A measurement method and coating technology, which is applied in the field of measurement of the weight of the plate coating film used for aluminum can lids, can solve problems such as large measurement errors, and achieve accurate results, rapid measurement, and good data reproducibility
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Embodiment 1
[0041] The influence of embodiment 1 different temperatures
[0042] The samples obtained by the aforementioned method to remove the single film and weighed with an analytical balance are divided into eight groups, two for each group, namely 1-1, 1-2, 2-1, 2-2, 3-1, 3 -2, 4-1, 4-2, 5-1, 5-2, 6-1, 6-2, 7-1, 7-2, 8-1, 8-2, each group is at a temperature of 20 ℃, 30°C, 40°C, 50°C, 60°C, 70°C, 80°C, 90°C concentrated sulfuric acid for 30 seconds each, and the results of film weight and corrosion were tested. The test results are shown in Table 1.
[0043] In the table, the theoretical film weight is to adopt organic solvent to replace the concentrated sulfuric acid to remove the organic film in the step (7), and other steps are identical with the process of measuring with the concentrated sulfuric acid.
[0044] The influence of table 1 temperature on measurement result
[0045] temperature
[0046] ℃
[0047] It can be seen from Table 1 that the temperatur...
Embodiment 2
[0048] Embodiment 2 The influence of concentrated sulfuric acid immersion time on test error.
[0049] The method is to divide 12 different samples into six groups, numbered 1-1, 1-2, 2-1, 2-2, 3-1, 3-2, 4-1, 4-2, 5-1, 5-2, 6-1, 6-2, the concentrated sulfuric acid in step (7) in the test method adopts a fixed temperature of 50°C, and changes the immersion time to 10 seconds, 20 seconds, 30 seconds, and 40 seconds respectively , 50 seconds, and 60 seconds to evaluate the influence of immersion time on the weight of the film and the corrosion of the substrate. In the table, the theoretical film weight is to adopt the organic solvent method to replace the concentrated sulfuric acid to remove the organic film in the step (7), and other steps are the same as the process of measuring with the concentrated sulfuric acid. The results are shown in Table 2
[0050] The influence of table 2 immersion time on measurement result
[0051] time
Second
sample
Numbe...
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