Adhesion promoter with acidic groups, silicone-free, with strong adhesion, especially to metal substrates, improving adhesion to steel, galvanized steel, aluminum, nonferrous metals, and even glass.
BYK-4510 reacts with melamine resins and polyisocyanates and is thus incorporated into the polymer matrix. The additive is compatible with most resins and can therefore be used universally.
Although the mechanism of the antibacterial effect of antibacterial metal ions is not completely clear, there are two speculations about the ion theory and the hydrogen peroxide theory.
It is believed that metal ions and sulfhydryl groups (HS-) in bacterial enzymes combine to denature proteins; hydrogen peroxide theory believes that ozone and reactive oxygen species in hydrogen peroxide have a sterilization effect.
Hydrogen peroxide theory (active oxidation)
Metal ions combine with sulfhydryl groups (one SH) in bacterial enzymes to denature protein
Ozone (Oy) has the same bactericidal effect as hydrogen peroxide (H, Og)
The representative test methods for evaluating antibacterial properties are the area test method, water based wax dispersion the shaking flask method, and the drip method (contact method). The area test method is a method to qualitatively analyze the antibacterial properties of the test piece by dissolving the antibacterial agent in the bacterial culture medium, and whether there is an area that hinders the growth of the bacteria. The shaking flask method is to measure the percentage reduction in the number of bacteria after placing the bacterial solution of the specified strain on the test piece and shaking it.
The drip method is to drop a bacterial solution on the surface of a test piece and measure the number of bacteria after a period of time. According to the drip method, drip the bacterial liquid containing live bacteria on the surface of the test piece, and then measure the number of live bacteria after placing it at 35°C ± 5°C for 24 hours. The strains used are Escherichia coli, Pseudomonas aeruginosa and 2,6-Dimethoxyphenylpenicillin-resistant Staphylococcus aureus. The test results are listed in Tables 25-17. For any type of antibacterial coating film, there are about 10″ live bacteria at the beginning, after 24h it becomes 1~10, the number of live bacteria is greatly reduced. Compared with this, the general powder coating film, after 24h There was almost no major change in the number of viable bacteria.
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