Designing superhydrophobic and flame retardant photo-cured hybrid coatings

BEYLER ÇİĞİL A.

PROGRESS IN ORGANIC COATINGS, vol.148, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 148
  • Publication Date: 2020
  • Doi Number: 10.1016/j.porgcoat.2020.105850
  • Journal Name: PROGRESS IN ORGANIC COATINGS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Gazi University Affiliated: No

Abstract

The study investigates the effect of the addition of phenyl phosphine oxide (DAPPO) with acrylate functionality, polyhedral oligomeric silsesquioxane (POSS) (acr-POSS) with acrylate functionality and 1H,1H,2H,2HPerfluorodecyl acrylate (PFOA) on the superhydrophobicity and fire-resistance of photo-curable urethane-acrylate coatings. The addition of DAPPO to urethane-acrylate (50 wt.%) improved flame resistance. The additions of acr-POSS and PFOA improved surface hydrophobicity through increasing surface roughness by the addition of acr-POSS and decreasing surface energy by the addition of PFOA. The flammability and surface properties of the photo-curable hybrid coatings were evaluated by measuring limiting oxygen index (LOI) and water contact angle (WCA), respectively. Compared with the only urethane-acrylate-containing coating, the final hybrid coating had an increased water contact angle from 72.7 degrees +/- 2 to 147.2 degrees +/- 2 and increased LOI from 17,0 +/- 0.08-24,3 +/- 0.08. In the final hybrid coating, extinguishing occurred in less than 10 s.