Fabrication of a transparent superamphiphobic coating with improved stability
Fabrication of a transparent superamphiphobic coating with improved stability
复制标题
稳定性提高的透明超双疏涂层的制备
DOI：
10.1039/c1sm05574g
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发表时间：
2011-01-01
期刊：
影响因子：
3.4
通讯作者：
Fu, Qiang
中科院分区：
文献类型：
--
作者：
He, Zhoukun;Ma, Meng;Fu, Qiang
本文提供了一种制备具有超疏水性和近超疏油性的透明超双疏涂层的有效方法，成品涂层在各种测量下也显示出改善的稳定性。为此，首先用聚二甲基硅氧烷（PDMS）和疏水二氧化硅（SiO2）纳米颗粒制备透明的超疏水涂层。然后将涂层烧结以使PDMS降解成SiO2，然后将其进一步氧化成硅烷醇（Si-OH）。最后，用1H，1H，2 H，2 H-全氟辛基三氯硅烷（PFTS）处理涂层。PFTS处理的涂层显示出透明性、超疏水性（水接触角为152.7 +/-2.1度）和近超疏油性（二碘甲烷接触角为140.7 +/-3.2度）。水和二碘甲烷的液滴可以同时以小于6度的滑动角从表面滑落。此外，在各种环境条件下，PFTS处理的涂层显示出比通过旋涂制备的PDMS/SiO2涂层更高的稳定性。经PFTS处理的涂层在高温环境下也表现出相当好的稳定性。系统地讨论了PFTS处理后涂层的超双疏性、透明性和稳定性的改善，结果表明，该涂层可用于许多户外应用。
We herein provide an effective method to fabricate a transparent superamphiphobic coating with superhydrophobicity and near-superoleophobicity, the finished coating also shows improved stability under various measurements. To do this, a transparent superhydrophobic coating was first prepared with polydimethylsiloxane (PDMS) and hydrophobic silicon dioxide (SiO2) nanoparticles. Then the coating was sintered to degrade the PDMS into SiO2 before it was further oxidized into silanol (Si-OH). Finally, the coating was treated with 1H, 1H, 2H, 2H-Perfluorooctyl-trichlorosilane (PFTS). The PFTS treated coating shows transparency, superhydrophobicity with a water contact angle of 152.7 +/- 2.1 degrees and near-superoleophobicity with a diiodomethane contact angle of 140.7 +/- 3.2 degrees. The droplets of water and diiodomethane can simultaneously slide off the surface with a sliding angle of less than 6 degrees. Moreover, the PFTS treated coating shows a higher stability than the PDMS/SiO2 coating fabricated by spin coating under various environmental conditions. The PFTS treated coating also shows quite good stability under high temperature environment. The superamphiphobic properties, transparency and improved stability of the PFTS treated coating are systemically discussed and the results show that the finished coating may be appropriate for many outdoor applications.