《Table 1.Rating scale for adhesion of the coatings》

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《Preparation of rare-earth-modified medical stone powders and their application as conductive fillers》

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Adhesion was tested according to GB9286-88（Chinese standard）to evaluate the degree of adherence to the surface of a substance by the grid method after coatings were painted onto the PU leather.The adhesion of the coatings is represented by the performances of the surface film on the PU leather after cutting，where 0，1，2，3，4，and 5 are the adhesion grades；among them，0 grade is the best，whereas 5grade is the worst，and grades 0，1，and 2 can all meet the application demands in antistatic coatings，anticorrosive coatings，and shielding coatings.The rating scale for adhesion is shown in Table 1.