Greetings,
I need some suggestion on the selection of adhesion promoter and wetting agent for water-borne polyurethane (WPU) coatings. For example, I found out that Organofunctional Silane Adhesion Promoters (which is the vinyltrimethoxysilane) is rather suitable for WPU. And for the wetting agent, I found that the non-ionic wetting agent works really well also. But, which one to select is still a mystery for me. If you have any suggestion regarding this please advice me. I planned on applying the coating on mild steel surface. Thank you.
Dear Dr. Wan Mohamad Ikhmal,
one way that surface roughness aids in adhesion is by increasing the total contact area between the paint and the adherend. If interfacial or intermolecular attraction is the basis for adhesion, increasing the actual area of contact will increase the total energy of surface interaction by a proportional amount.
For more details, please see the source:
-Fundamentals of Paint Adhesion by Metal Powder
Available at: https://www.materialstoday.com/metal-finishing/features/fundamentals-of-paint-adhesion/
I also suggest you to have a look at the following documents:
-Select Adhesion Promoters for Coatings By SpecialChem
Available at: https://coatings.specialchem.com/selection-guide/select-adhesion-promoters-for-coatings
-COATING liquid additives by SIRI S.p.A.
Available at: https://www.sirispa.com/coatingliquidadditives?lang=en
-The Big TEGO Products – Services – Data Sheets by Evonic
Available at: https://coatings.evonik.com/product/coatings/downloads/the-big-tego-en.pdf
and at: https://coatings.evonik.com/product/coatings/downloads/the%20coatings%20expert_2019.pdf
-Coatings Additives by Sinograce Chemical
Available at: https://www.sinogracechem.com/chemical-additives_c4
-COATING ADDITIVES Product Guide – Worldwide by endless inspiration
Available at: https://allnex.com/getattachment/a1eec2e5-0108-4539-89c9-7e2725eb841a/730AL_264-Additives-Productguide-spreads.pdf.aspx?lang=en-US
-Marine and Protective Coatings by BYK
Available at: https://www.byk.com/en/service/technical-service/ask-the-expert/marine-and-protective-coatings
Enjoy reading and my best regards, Pierluigi Traverso.
- Badges
- Science topic
- Similar topics
- Biological Science
- Biota
- Eukaryota
- Fungi