A method for measuring the weight of pretreatment film of color-coated board
A measurement method and pretreatment technology, which is applied in the pretreatment field of color-coated plate detection, can solve the problems of longer digestion time, complicated sample sealing, and high film weight measurement value, so as to achieve strong sample digestion ability, ensure accuracy, and sample Closed and easy effect
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[0014] Below, the present invention will be further described by means of specific embodiments:
[0015] A method for measuring the weight of a color-coated pretreatment film, which includes the following steps: sample sealing: put the non-measurement side of the sample downward into a rubber sample dissolving cup, press it tightly with your hands, so that all the edges of the sample sheet are sunk into the In the rubber sample dissolving cup;
[0016] Sample stripping: add 10ml of hydrochloric acid-hexamethyltetramine corrosion solution to the sample dissolution cup, and after the reaction is calm, transfer the stripping solution to a 100ml steel volumetric flask, rinse the surface of the sample with water for 3 to 4 times, and transfer the rinse solution to into a 100ml steel volumetric flask;
[0017] Digestion sample: Add 2ml of nitric acid and 2ml of hydrogen peroxide into a 100ml steel volumetric flask, heat and boil for 10min;
[0018] Measurement solution preparation...
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