Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, Ontario, K7L 3N6 (Canada).
Angew Chem Int Ed Engl. 2015 Oct 19;54(43):12722-7. doi: 10.1002/anie.201504892. Epub 2015 Aug 28.
Conventionally, low-surface-tension fluorinated reagents are incorporated into anti-smudge (oil- and water-repellent) coatings for oil repellency. However, fluorinated compounds are expensive and an environmental concern because of their high stability and bioaccumulation. These factors limit their widespread application. We report herein the development of fluorine-free anti-smudge polyurethane coatings that are clear at thicknesses up to tens of micrometers and are able to sustain extensive surface damage. We demonstrate that these coatings can be applied readily onto a diverse range of substrates.
传统上，低表面张力的含氟试剂被掺入防污（防油和防水）涂料中以实现拒油性。然而，由于氟化合物的高稳定性和生物累积性，它们价格昂贵且对环境有危害。这些因素限制了它们的广泛应用。本文报道了无氟防污聚氨酯涂料的开发，其在数十微米的厚度下仍保持透明，并且能够承受广泛的表面损伤。我们证明这些涂料可以很容易地应用于各种基底。
