A kind of color-coated board pretreatment film weight determination method

A measurement method and pretreatment technology, which is applied in the pretreatment field of color-coated plate detection, can solve problems such as longer digestion time, complicated sample sealing, and over-corrosion of samples, so as to achieve simple and easy sample sealing, ensure accuracy, and sample Strong digestion effect

Active Publication Date: 2011-12-28
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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Problems solved by technology

This method has the following defects: the sealing of the sample is more complicated, and it is easy to cause the over-corrosion of the sample due to the penetration of the edge of the non-measurement surface due to improper operation; The ingredients are dissolved, resulting in a high

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  • A kind of color-coated board pretreatment film weight determination method

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Embodiment Construction

[0014] Below, the present invention is further described by specific embodiment:

[0015] A method for measuring the pretreatment film weight of a color-coated plate, which includes the following steps: sample sealing: put the non-measurement surface of the sample down, put it into a rubber sample dissolving cup, press it tightly by hand, so that the edge of the sample piece is completely immersed in the in a rubber dissolving cup;

[0016] Sample peeling: Add 10ml of hydrochloric acid-hexamethyltetramine corrosion solution to the sample dissolution cup. After the reaction is calm, transfer the peeling solution to a 100ml steel volumetric flask, rinse the surface of the sample with water 3 to 4 times, and transfer the rinse solution. into a 100ml steel volumetric flask;

[0017] Digestion sample: add 2ml nitric acid and 2ml hydrogen peroxide to a 100ml steel volumetric flask, heat and boil for 10min;

[0018] Preparation of assay solution: After cooling the digestion solutio...

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Abstract

The invention relates to a color-coated plate, in particular to a pretreatment method for detecting a color-coated plate. A method for measuring the pretreatment film weight of a color-coated plate, which includes the following steps: a sample sealing step: using a rubber sample dissolving cup with a large inner diameter and a small rubber sample cup to seal the non-measurement surface; the sample stripping step: using hydrochloric acid-hexamethyl Tetraamine corrosion inhibition system, the pretreatment film is peeled off together with the coating, and the substrate itself is not corroded and dissolved at this time; the digestion sample step: use nitric acid and hydrogen peroxide wet digestion to transfer all the components to be measured into the solution to make a test solution; pretreatment film weight measurement steps: use ICP-AES or FAAS method to measure the pretreatment film weight of the color-coated board. The method of the invention is simple and easy to seal the sample, the measurement result is accurate, and the prepared measurement solution can meet the requirements of certain measurement techniques (such as ICP-AES, FAAS, etc.) to measure the weight of the pretreatment film.

Description

technical field [0001] The invention relates to a color-coated board, in particular to a pretreatment method for color-coated board detection. Background technique [0002] The currently commonly used method for measuring the pretreatment film weight of color-coated boards is: use scotch tape to seal the non-measurement surface, dissolve the pre-treatment film on the color-coated board with hydrochloric acid, and then boil it with hydrogen peroxide for 30min to measure the thickness of the pretreatment film. This method has the following defects: the sealing of the sample is complicated, and it is easy to cause the over-corrosion of the sample caused by the penetration of the edge of the non-measurement surface due to improper operation; in the process of pretreatment film thickness peeling, the sample may be over-peeled, causing the substrate to be over-peeled. When the components are dissolved, the measured value of the film weight is high, which affects the measurement ac...

Claims

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Application Information

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IPC IPC(8): G01N5/00G01N1/28G01N1/44
Inventor 朱子平陈敏
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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