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Rapid evaluation method for seepage rate of antifouling agent of antifouling paint

A technology of antifouling paint and evaluation method, applied in the direction of material inspection products, etc., can solve the problems of long test period of antifouling agent exudation rate and so on

Pending Publication Date: 2021-08-31
XIAMEN SUNRUI SHIP COATING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem in the prior art that the antifouling agent exudation rate in the antifouling paint has a long test period, the present invention provides a rapid evaluation method for the exudation rate of the antifouling agent in the antifouling paint, comprising the following steps:

Method used

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  • Rapid evaluation method for seepage rate of antifouling agent of antifouling paint
  • Rapid evaluation method for seepage rate of antifouling agent of antifouling paint
  • Rapid evaluation method for seepage rate of antifouling agent of antifouling paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0035] Step a, configure a special solution for soaking the sample, and add 40ml of NaOH solution (1.5mol / L), 3.95g of glycine, and 52g of NaCl in sequence in a 2L volumetric flask. After adding deionized water to constant volume, a soaking solution with a pH value of 11 is obtained;

[0036] Step b. Brush the antifouling coating to be tested on the glass slide of the same specification, and use a 200μm specification wire bar coater to brush; after the sample is dried, obtain a copper ion exudation rate test with a dry film thickness of about 120μm Template;

[0037] Step c, add 50ml of buffer solution into a container that can be sealed, immerse all the test samples in the buffer solution, and seal the system;

[0038] Step d, after soaking for 48 hours, take a sampling test, take 5ml of liquid, dilute it 500 times, use a volumetric flask to constant volume, and use atomic absorption spectroscopy or high performance liquid chromatography to measure the copper ion concentrati...

Embodiment 1

[0058] Tests on Dissolution Coating CDP-2:

[0059] Prepare the solution according to Example A, use a 200 μm specification wire bar coater to brush the antifouling paint on the common glass slide, and paint 3 groups of templates for each group of paint;

[0060] After the antifouling paint is dry, place the sample in a 50ml buffer solution container and seal it. After 48 hours, use a pipette gun to take out 5ml of the solution, add it to a 50ml volumetric flask, use deionized water to make up the volume (dilute 10 times), then use a pipette gun to take out 1ml of the solution in the volumetric flask, and add it to another 50ml volumetric flask , after constant volume with deionized water (diluted 50 times); use atomic absorption spectrometry to carry out copper ion concentration test (diluted 500 times) to the solution after dilution.

[0061] Repeat the above steps every 48 hours, and test 7 cycles and 14 days in total; obtain the copper ion exudation rate curve of the coat...

Embodiment 2

[0063] Testing of self-polishing coating SPC-7:

[0064] Prepare the solution according to Example A, use a 200 μm wire bar coater to brush the antifouling paint on the ordinary glass slide, and paint 3 groups of samples for each group of paint.

[0065] After the antifouling paint is dry, place the sample in a 50ml buffer solution container and seal it. After 48 hours, use a pipette gun to take out 5ml of the solution, add it to a 50ml volumetric flask, use deionized water to make up the volume (dilute 10 times), then use a pipette gun to take out 1ml of the solution in the volumetric flask, and add it to another 50ml volumetric flask , after constant volume with deionized water (diluted 50 times); use atomic absorption spectrometry to carry out copper ion concentration test (diluted 500 times) to the solution after dilution.

[0066] Repeat the above steps every 48 hours for a total of 7 cycles and 14 days of testing. The copper ion exudation rate curve of the coating is o...

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Abstract

The invention relates to the technical field of chemical materials, in particular to a rapid evaluation method for the seepage rate of an antifouling agent of an antifouling paint, and the rapid evaluation method for the seepage rate of the antifouling agent of the antifouling paint is characterized in that the antifouling paint is soaked in a soaking solution, cuprous oxide in the paint accelerates to release copper ions under the environmental condition of the soaking solution, and the seepage rate of the antifouling agent of the antifouling paint is rapidly evaluated. The method is suitable for rapidly screening the coating formula in a laboratory, the coating formula with the poor copper ion seepage rate is eliminated before the coating is subjected to a shallow sea hanging plate experiment, the experiment cost for testing and evaluating the antifouling coating is saved, and the method has important practical application value.

Description

technical field [0001] The invention relates to the technical field of chemical materials, in particular to a rapid evaluation method for the exudation rate of an antifouling agent of an antifouling paint. Background technique [0002] There are many types of marine antifouling coatings, but at present, marine antifouling coatings are the most widely used and the most effective antifouling coatings are self-polishing antifouling coatings. Most of the self-polishing antifouling coatings widely used at present use cuprous oxide as the main antifouling agent, relying on the biological toxicity of copper ions to inhibit the adhesion of fouling organisms. [0003] The copper ion exudation rate test of the antifouling coating is an important technical index of this kind of self-polishing coating. Through the test and evaluation of the copper ion exudation rate of the coating, the preliminary performance evaluation of the coating can be carried out to judge whether it has a stable ...

Claims

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Application Information

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IPC IPC(8): G01N33/26
CPCG01N33/26
Inventor 刘轶龙黄杰李春光王胜龙
Owner XIAMEN SUNRUI SHIP COATING
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