Article
  • Synthesis and Properties of UV-Curable Polyurethane Acrylates Containing Fluorine
  • Cho YK, Lee WK
  • 불소를 함유한 UV 경화 폴리우레탄 아크릴레이트 합성 및 물성
  • 조용광, 이원기
Abstract
In order to develop eco-friendly water-repellent coating materials, UV-curable polyurethane acrylates containing hydrophobic fluorine group were synthesized. H12MDI with excellent yellowing resistance and water resistance was used as an isocyanate. Mixed polyols of polycarbonate diol and perfluoropolyether (PFPE) diol were used. 2-Hydroxyethyl acrylate with C=C bond was introduced for UV-curing coatings. Thermal and mechanical properties of the obtained UV-cured polyurethane acrylates were investigated. As increasing to PFPE content in polyol 10%, the contact angle of polyurethane acrylates increased from 75.9o to 107.1o, tensile strength decreased but elongation increased due to the flexibility of PFPE. These results indicate that the surface hydrophobicity can be achieved by the introduction of PFPE in polyurethane acrylates.

휘발성 유기화합물을 포함하지 않는 친환경 발수성 코팅제를 제조하기 위해 perfluoropolyether(PFPE)를 함유하는 UV 경화형 폴리우레탄 아크릴레이트를 합성하였다. 폴리올은 폴리카보네이트다이올과 PFPE 혼합하여 사용하였으며 디이소시아네이트는 내수성과 황변성이 우수한 H12MDI를 사용하였다. C=C결합을 가지는 2-hydroxyethyl acrylate를 부가하여 UV경화 폴리우레탄 아크릴레이트 코팅제를 제조하였다. PFPE의 함량에 따라서 기계적 특성, 열적 특성, 표면 특성 등을 고찰하였으며, 유연한 PFPE 함량이 증가할수록 기계적 강도는 감소하는 반면 신율은 증가하였다. 접촉각 측정을 통하여 PFPE 함량을 10%까지 올리면 코팅제의 접촉각이 75.9°에서 107.1°로 증가하였고 발수특성이 향상된 것을 확인하였다.

Keywords: water-repellent; UV-curable; perfluoropolyether; polyurethane acrylate; coating materials

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2016; 40(3): 439-445

    Published online May 25, 2016

  • 10.7317/pk.2016.40.3.439
  • Received on Dec 17, 2015
  • Accepted on Feb 19, 2016