4.5. The mechanical performance of the coating film
The mechanical performance of the coating film was tested. The results are shown in Table 4. The testing methods and their standards were adopted according to the China Standard (GB/T 528-1992, GB/T 124-86 and GB/T 2790-1995). From the results given in Table 4, it can be seen that the coating film has good mechanical properties, so the film is applicable.