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Indoor evaluation method for antifouling properties of foul-release antifouling coatings

A technology of antifouling performance and antifouling coating, which is applied in the direction of measuring devices, material analysis through optical means, instruments, etc., can solve the problem of large error in evaluation results, evaluation of antifouling performance of hard-to-foul release antifouling materials, Low data reliability and other issues, to achieve fast evaluation, high reliability, and good correlation

Active Publication Date: 2012-05-02
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, these existing indoor evaluation methods can only characterize the antifouling ability of fouling-releasing antifouling materials to single fouling marine organisms, and the evaluation results often have large differences due to different target evaluation organisms, that is, the evaluation results have large errors; At the same time, due to the lack of research on the correlation between indoor evaluation and antifouling data under natural environmental conditions, the reliability of the data is low, and it is difficult to evaluate the antifouling performance of fouling release antifouling materials

Method used

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  • Indoor evaluation method for antifouling properties of foul-release antifouling coatings

Examples

Experimental program
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Effect test

Embodiment 1

[0011] Example 1: Preparation of Diatom Suspension for Evaluation

[0012] In this embodiment, the diatoms are first placed in the F / 2 medium, put into an artificial climate box for cultivation, gently shake the Erlenmeyer flask 3 to 4 times a day, and measure the concentration of the algae liquid with a hemocytometer under an optical microscope. When the concentration of algae solution reaches 1×10 6 Each / mL, put the sterilized magnetite into the conical flask, peel off and disperse the diatoms attached to the bottom of the conical flask by low-speed magnetic stirring, and filter through a 300-mesh sieve to make the silicon in the diatom suspension The algae are in a single-cell state, and finally the density of the diatom suspension is adjusted to 1×10 with sterilized seawater. 5 individual / mL.

Embodiment 2

[0013] Example 2: Preparation of Ulva spore suspension for evaluation

[0014] In this example, several strains of algae are first selected and placed in a triangular flask filled with sterilized seawater for aerated culture. The water temperature is controlled at 20°C, and the light is continuously illuminated for 15 hours. Ulva spore suspension, and adjust the concentration of Ulva spores to 1×10 with sterile seawater 6 individual / mL.

Embodiment 3

[0015] Example 3: Evaluation of Antifouling Performance of Fouling Release Coatings on Diatoms

[0016] In this example, three kinds of fouling-release coating samples (Intersleek425, TSE3663 and DY-OH201) were put into the diatom suspension prepared in Example 1, and were statically attached for 3 hours at 20°C; Gently shake back and forth several times in sterilized seawater to remove unattached diatoms, count the number of diatoms attached to the surface of the sample under an optical microscope, and use the number of static attachments of diatoms to characterize the static antifouling performance of the antifouling coating and carry out Sorting, see Table 1 for specific data; quickly fix the sample plate counted in the static adhesion experiment on the rotary scouring device, and remove the sample plate after scouring at a scouring speed of 2m / s for 5min. The algae were counted, the removal rate of diatoms was calculated, and the dynamic antifouling performance of the anti...

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Abstract

The invention belongs to the technical field of protection against marine organism foul, and relates to an indoor evaluation method for the antifouling properties of foul-release antifouling coatings, which includes three process steps, i.e. static attachment experiment, calculation and evaluation of the antifouling properties and determination of weights: the static attachment experiment is first carried out by putting sample plates to be evaluated into the suspension of diatom and ulva spores indoors, a microscope is used for counting, the antifouling properties of the antifouling coatings are characterized by the number of attached marine organisms and ranked, and the less the number of the attached marine organisms is, the better the antifouling properties of the foul-release antifouling coatings are; the sample plates on which the diatom or the ulva spores are attached are fixed on a rotary washer and washed by water flow, the microscope is then used for counting, the removal rate of the diatom and the ulva spores is calculated, and the higher the removal rate is, the better the antifouling properties of the coatings are; and finally, indoor evaluation results are respectively compared with real marine organism-attached plate data. The correlation between the evaluation results and the real marine organism-attached plate result is good, the method is highly reliable, and is easy to operate, and evaluation is rapid.

Description

Technical field: [0001] The invention belongs to the technical field of marine biofouling protection, and relates to an indoor evaluation method for the antifouling performance of a fouling release type antifouling coating, in particular to a method for evaluating typical fouling marine organisms such as diatoms and Ulva spores Biological, the indoor evaluation method of static and dynamic antifouling performance is tested by combining indoor static adhesion and dynamic scouring. Background technique: [0002] The adhesion of marine organisms on the surface of ships will bring great harm. Taking measures to prevent marine organisms from fouling is of great significance for energy saving, consumption reduction and corrosion reduction. Coating antifouling materials on the hull surface is the most effective and common method to solve the problem of biofouling. With the gradual ban and restriction of antifouling materials containing organotin and cuprous oxide, the development o...

Claims

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Application Information

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IPC IPC(8): G01N21/84
Inventor 张金伟蔺存国周娟
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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