Zhang Kaka, Huang Shuaishuai, Wang Jiandong, Liu Guojun
Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, Ontario, K7L 3N6, Canada.
Angew Chem Int Ed Engl. 2019 Aug 26;58(35):12004-12009. doi: 10.1002/anie.201904210. Epub 2019 Jul 26.
Transparent omniphobic or anti-smudge coatings with glass-like wear resistance and polymer-like bendability have many potential applications but there are no reports of such materials. We Report herein a molecular composite possessing these properties. The composite is prepared via the photo-initiated ring-opening polymerization of the epoxide rings of glycidyloxypropyl polyhedral silsesquioxane (GPOSS). While the desired hardness is provided by the silica core, the flexibility is imparted by the glycidyloxypropyl network. Oil and water repellency is achieved without adversely affecting the other properties by incorporating a low-surface-tension liquid lubricant poly(dimethyl siloxane). On the final coating, various organic solvents and water readily and cleanly glide, while complex fluids, such as ink and paint facilely contract. These properties are retained after an initially flat coating sample is rolled into a U-shape 500 times or is abraded with steel wool.
具有类似玻璃的耐磨性和类似聚合物的可弯曲性的透明憎油或防污涂层有许多潜在应用，但尚无此类材料的报道。我们在此报告一种具有这些特性的分子复合材料。该复合材料是通过光引发的缩水甘油氧基丙基多面体倍半硅氧烷（GPOSS）环氧环的开环聚合制备的。虽然二氧化硅核提供了所需的硬度，但缩水甘油氧基丙基网络赋予了柔韧性。通过加入低表面张力的液体润滑剂聚二甲基硅氧烷，可实现拒油和拒水性能，且不会对其他性能产生不利影响。在最终涂层上，各种有机溶剂和水能够轻松、干净地滑动，而诸如墨水和油漆等复杂流体则很容易收缩。将最初平整的涂层样品卷成U形500次或用钢丝棉磨损后，这些性能依然保留。
