I am facing a problem regarding a de-adhesion problem with the coating. A brief description of my methodology is given below.
I am using mild or Low Carbon steel as a substrate and I polish the surface of the substrate with Silicon carbide paper to 320 grit size. After that, I do the sonication of the steel substrate with Acetone and clean it with Ethanol before applying the coating. I use Doctor blade for the coating. I am using EPON RESIN 815C with its curing agent EPIKURE Curing Agent 3234. I mix the coating with a ratio of (100:25). Usually, I prepare a coating with a thickness of 100 um.
Please give your suggestions to improve adhesion. Thank you in advance for your attention and guidance.
Please also suggest which coating method is better? Dip coating or Doctor blade?
Dear Dr. Muddasir Nawaz ,
I suggest you to have a look st the following techical notes/papers:
- A Guide to Providing Perfect Coating Adhesion by Ron Lewarchick – Prospector (2019)
Available at: https://knowledge.ulprospector.com/10127/pc-a-guide-to-providing-perfect-coating-adhesion/
- Epoxy adhesion to metals
Randall G. Schmidt, James P. Bell
Advances in Polymer Science 75 (1986)
Available, as full text on RG, at: https://www.researchgate.net/publication/251253830_Epoxy_adhesion_to_metals
- Process and Formulation Strategies to Improve Adhesion of Nanoparticulate Coatings on Stainless Steel
Jutta Hesselbach, Ann-Christin Böttcher, Ingo Kampen, Georg Garnweitner, Carsten Schilde, and Arno Kwade
Coatings, 8(5), 156 (2018)
Available at: https://www.mdpi.com/2079-6412/8/5/156/htm
- A Study of Various Parameters Affecting Adhesion of Coatings to Metal Substrates
Worabhorn Pathanatecha
Degree Project in Chemical Science and Engineering, Märsta, Sweden (2019)
Available at: http://kth.diva-portal.org/smash/get/diva2:1356276/FULLTEXT01.pdf
-EPON Resin Structure Reference Manual (2001)
Available at: https://www.google.it/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwilseWMgezuAhVHCxoKHd1VBIgQFjACegQIBBAC&url=http%3A%2F%2Ffiles.engineering.com%2Fdownload.aspx%3Ffolder%3De9615444-1c44-4d93-a1f3-1c449a105f9d%26file%3Depon_SRM.PDF&usg=AOvVaw35QOIKZ8i43zQtUt06gnq3
Enjoy reading and my best regards. Pierluigi Traverso.
Dear Dr. Muddasir Nawaz ,
I suggest you to have a look st the following techical notes/papers:
- A Guide to Providing Perfect Coating Adhesion by Ron Lewarchick – Prospector (2019)
Available at: https://knowledge.ulprospector.com/10127/pc-a-guide-to-providing-perfect-coating-adhesion/
- Epoxy adhesion to metals
Randall G. Schmidt, James P. Bell
Advances in Polymer Science 75 (1986)
Available, as full text on RG, at: https://www.researchgate.net/publication/251253830_Epoxy_adhesion_to_metals
- Process and Formulation Strategies to Improve Adhesion of Nanoparticulate Coatings on Stainless Steel
Jutta Hesselbach, Ann-Christin Böttcher, Ingo Kampen, Georg Garnweitner, Carsten Schilde, and Arno Kwade
Coatings, 8(5), 156 (2018)
Available at: https://www.mdpi.com/2079-6412/8/5/156/htm
- A Study of Various Parameters Affecting Adhesion of Coatings to Metal Substrates
Worabhorn Pathanatecha
Degree Project in Chemical Science and Engineering, Märsta, Sweden (2019)
Available at: http://kth.diva-portal.org/smash/get/diva2:1356276/FULLTEXT01.pdf
-EPON Resin Structure Reference Manual (2001)
Available at: https://www.google.it/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwilseWMgezuAhVHCxoKHd1VBIgQFjACegQIBBAC&url=http%3A%2F%2Ffiles.engineering.com%2Fdownload.aspx%3Ffolder%3De9615444-1c44-4d93-a1f3-1c449a105f9d%26file%3Depon_SRM.PDF&usg=AOvVaw35QOIKZ8i43zQtUt06gnq3
Enjoy reading and my best regards. Pierluigi Traverso.
Dear Muddasir
It is well known that adhesion of coating would improve with more rough surfaces than
Smooth surfaces of metallic substrates. This is because rough surfaces have more surface area to be covered by the coating than smooth surfaces.
Article Adhesion and cohesion of epoxy-based industrial composite coatings
try this one
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