Al-Mg-Mn-Si合金表面含氟复合涂层的憎冰性能

Icephobic Performance of Combined Fluorine-Containing Composite Layers on Al-Mg-Mn-Si Alloy Surface.

作者信息

Egorkin Vladimir S, Mashtalyar Dmitry V, Gnedenkov Andrey S, Filonina Valeriia S, Vyaliy Igor E, Nadaraia Konstantine V, Imshinetskiy Igor M, Belov Evgeny A, Izotov Nikolaj V, Sinebryukhov Sergey L, Gnedenkov Sergey V

机构信息

Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 690022 Vladivostok, Russia.

出版信息

Polymers (Basel). 2021 Nov 5;13(21):3827. doi: 10.3390/polym13213827.

DOI:10.3390/polym13213827

PMID:34771383

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8588355/

Abstract

This paper presents the results of an evaluation of anti-icing properties of samples obtained by plasma electrolytic oxidation (PEO) with a subsequent application of superdispersed polytetrafluoroethylene (SPTFE) and polyvinylidenefluoride (PVDF). A combined treatment of the samples with SPTFE and PVDF is also presented. It is revealed that impregnation of a PEO layer with fluoropolymer materials leads to a significant increase in surface relief uniformity. Combined PVDF-SPFTE layers with a ratio of PVDF to SPTFE of 1:4 reveal the best electrochemical characteristics, hydrophobicity and icephobic properties among all of the studied samples. It is shown that the decrease in corrosion current density for PVDF-SPFTE coatings is higher by more than five orders of magnitude in comparison with uncoated aluminum alloy. The contact angle for PVDF-SPFTE coatings attain 160.5°, which allows us to classify the coating as superhydrophobic with promising anti-icing performance. A treatment of a PEO layer with PVDF-SPFTE leads to a decrease in ice adhesion strength by 22.1 times compared to an untreated PEO coating.

摘要

本文介绍了通过等离子体电解氧化（PEO）获得的样品的抗冰性能评估结果，随后应用了超分散聚四氟乙烯（SPTFE）和聚偏二氟乙烯（PVDF）。还介绍了用SPTFE和PVDF对样品进行的联合处理。结果表明，用含氟聚合物材料浸渍PEO层会导致表面起伏均匀性显著增加。在所有研究样品中，PVDF与SPTFE比例为1:4的PVDF-SPFTE组合层显示出最佳的电化学特性、疏水性和抗冰性能。结果表明，与未涂层的铝合金相比，PVDF-SPFTE涂层的腐蚀电流密度降低了五个多数量级。PVDF-SPFTE涂层的接触角达到160.5°，这使我们能够将该涂层归类为具有良好抗冰性能的超疏水涂层。与未处理的PEO涂层相比，用PVDF-SPFTE处理PEO层可使冰附着力强度降低22.1倍。