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
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[0011] Example 1: Preparation of diatom suspension for evaluation
[0012] In this example, the diatoms were first placed in F / 2 medium and placed in an artificial climate box for cultivation. The flask was gently shaken 3 to 4 times a day, and the concentration of the algae solution was measured with a hemocytometer under an optical microscope. When the concentration of algae solution reaches 1×10 6 When the volume / mL, put the sterilized magnets into the Erlenmeyer flask, and use low-speed magnetic stirring to peel off and disperse the diatom attached to the bottom of the Erlenmeyer flask, and filter through a 300-mesh sieve to make the silica in the diatom suspension The algae is in a single-cell state, and finally the density of the diatom suspension is adjusted to 1×10 with sterile seawater 5 Pieces / mL.
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[0013] Example 2: Preparation of Ulva spore suspension for evaluation
[0014] In this example, a number of algae were first selected and placed in a triangular flask containing sterile seawater for aerated culture. The water temperature was controlled at 20°C and the light was continuously illuminated for 15 hours. After the Ulva spores were released, the spores were filtered through a 300-mesh sieve. Ulva spore suspension and sterilized seawater to adjust the concentration of Ulva spores to 1×10 6 Pieces / mL.
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[0015] Example 3: Evaluation of antifouling performance of fouling-releasing coating on diatoms
[0016] In this example, three fouling-release coating samples (Intersleek425, TSE3663 and DY-OH201) were put into the diatom suspension prepared in Example 1, and statically attached at 20°C for 3 hours; the samples were taken out, and Gently shake back and forth several times in sterilized seawater to remove unattached diatoms, count the attached diatoms on the surface of the sample under an optical microscope, and use the static attached number of diatoms to characterize the static antifouling performance of the antifouling coating. For sorting, see Table 1 for the specific data; then quickly fix the sample plate counted in the static adhesion experiment on the rotating scouring device, and remove the sample plate after scouring at a scouring speed of 2m / s for 5 minutes, and perform an optical microscope on the undesorbed silicon The algae were counted and the removal rate of diato...
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