Adhesion Improvement between Epoxy and Stainless Steel Using a Silane Coupling Agent in an Atmospheric Plasma Process. Issue 4 (4th November 2014)

• Record Type: Journal Article
• Authors: Da Ponte, Gabriella; Ghosh, Amit Kumar; Kakaroglou, Alexandros; Van Hemelrijck, Danny; Van Mele, Bruno; Verheyde, Bert
• Is Part Of: Plasma processes and polymers. Volume 12:Issue 4(2015:Apr)
• Page Start: 347
• Page End: 361
• Publication Date: 2014-11-04
• Subjects: composites -- dielectric barrier discharges (DBD) -- plasma post treatment -- silane -- stainless steel; Plasma polymerization -- Periodicals; Plasma-enhanced chemical vapor deposition -- Periodicals; Plasma chemistry -- Periodicals
• DOI: 10.1002/ppap.201400106
• Languages: English
• ISSNs: 1612-8850

Abstract

Abstract: 3‐Aminopropyltriethoxysilane coatings have been deposited on stainless steel (SS) samples by means of an atmospheric pressure dielectric barrier discharge as an adhesive promotion layer in epoxy resin/SS composites. A multi‐diagnostic analytical approach (FTIR, XPS) was used for the chemical characterization of the deposited coating with regard to improvement of adhesively bonded joint strength. The effect of a plasma post‐treatment after the plasma coating deposition was compared to a thermal post‐treatment. Both enhanced the siloxane networking resulting in a significant adhesion improvement. Fracture strength between SS and epoxy was increased with more than 20 MPa. Abstract : Atmospheric plasma deposited siloxane coatings including a plasma post treatment improve the adhesion strength in stainless steel/epoxy hybrids with 20 MPa compared to untreated steel samples. Therefore these plasma coatings can be seen as worthy alternatives to more conventional wet chemical coatings with a thermal post treatment.