476 can effectively kill all kinds of fungi that cause mold on the surface of the coating. It can provide excellent “dry film” mold protection for adhesives, sealant inks, indoor and outdoor paints, coatings and wood preservative stains, wood preservation, etc. It can also be used as paper coating, rope, etc. It can also be used as an adhesive mildew inhibitor for paper coatings, rope, etc. It can be formulated with both water-based and solvent-based formulations.
The second method is also to simulate the ship device. Use a cylinder of p8.3cm×25.5cm, apply anti-rust and anti-fouling paint according to the regulations, dry it for one week, and rotate it in a flowing seawater tank with a capacity of 220L. The vertical rotation speed is equivalent to that of the outside. Take out the 1.85nmile on the surface at the same time every week, move it to a j14.5cm×30.5cm bottle with a certain amount of water, rotate it for a certain period of time, take 25mL of water, and analyze the permeation of the antifouling agent with Per r Elmer 303 atomic absorption spectrometer. Out rate.
In addition, scanning electron microscope X-ray energy spectrum can also be pp wax 6102 used to analyze the content and distribution of antifouling agent in the paint film after immersion in the sea for 1 and 2 years.
Real ship test
You can choose a certain type of ship and select representative parts for partial painting, apply anti-rust and anti-fouling paint in accordance with the regulations, and then sail with the ship. When sailing, it will consume more anti-fouling agent when it is washed by sea water. Moreover, it has to be affected by different sea cities, currents, salinity, pH and other factors. Therefore, local tests on real ships can best represent the actual situation, but real ships must be painted with two or more ships to do parallel tests in different sea areas to get the results. Give real results.
Real sea seepage rate test
The actual sea seepage rate test is to screen the appropriate formula according to the quantitative seepage of the antifouling agent in the harbour siding and the actual ship test formula.
Test of exudation rate of cuprous oxide in paint film
Sodium diethylaminodithioformate method: A method to determine the copper ion exudation rate of paint film with cuprous oxide as an antifouling agent in natural seawater.
Measurement range: 0~50ugCu?+/100mL sea water.
Principle: The paint film sample containing cuprous oxide is hydrolyzed in seawater to release Cu²+, and Cu can form a yellow (brown) chelate with sodium diethylaminodithioformate (ie copper reagent) in a weak acid or ammonia solution Things.
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