Friction reduction on recent non-releasing biocidal coatings by a newly designed friction test rig. (November 2015)

• Record Type: Journal Article
• Authors: Tulcidas, A.V.; Bayón, R.; Igartua, A.; Bordado, J.C.M.; Silva, E.R.
• Is Part Of: Tribology international. Volume 91(2015)
• Page Start: 140
• Page End: 150
• Publication Date: 2015-11
• Subjects: Antifouling coatings -- Drag friction -- Roughness -- Wetting; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2015.06.017
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: The drag friction effect of recently developed silicone and polyurethane (PU) paint formulations, containing covalently bound biocide (Econea) were assessed, using a novel rotary test rig. The immobilization of Econea increased the hydrophobic properties of tested paint formulations, in particular in relation to the reference silicone based paints, where a 32% reduction of the contact angle was registered for the latter. The formulations containing immobilized Econea showed a positive effect in the drag friction measurements, by reducing the skin frictional drag by 0–16% and 9–20% for silicone and PU based paints, respectively, for the range of tested rotational speeds. Highlights: Different paints formulations with immobilized biocides were developed for marine applications. Mechanical properties were evaluated to see the effect of biocides on paints performance. A new test rig was design and developed for measuring the drag friction coefficients. The immobilization of biocides on new paints reduced the drag friction coefficients.