Large-scale fabrication of a durable and self-healing super-hydrophobic coating with high thermal stability and long-term corrosion resistance

被引:39
|
作者
Li, Dawei [1 ,2 ]
Ma, Liangji [1 ,2 ]
Zhang, Bo [1 ,2 ]
Chen, Shaohua [1 ,2 ]
机构
[1] Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China
[2] Beijing Inst Technol, Beijing Key Lab Lightweight Multifunct Composite, Beijing 100081, Peoples R China
关键词
The work reported here is supported by the NSFC through Grants (No. 11532013; No; 11872114; and No. 12032004) and the Postdoctoral Research Foundation of China (No. 2020M680365 and 2020M680366);
D O I
10.1039/d0nr08985k
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Durability is a crucial feature to expand the application field of artificial superhydrophobic coatings. Herein, a kind of durable superhydrophobic coating is prepared by a simple and cheap method using a fluorine-free suspension as the raw material, which consists of epoxy modified silicone resin (MSR), functionalized SiO2, GO, and lamellar mica powder (MP). The MSR@SiO2 + GO + MP coating shows outstanding surface wettability with a water contact angle of 163.8 degrees, a low sliding angle of 3.5 degrees and the microdroplet adhesive force of about 12.6 +/- 0.5 mu N. Furthermore, it can withstand alternating high and low temperatures, intense UV radiation for 7 days, strong chemical attack, and various mechanical durability tests. In addition, the coating also exhibits a significantly repairable ability to resist O-2 plasma etching, and outstanding self-cleaning both in air and oil even after mechanical damage. The mechanism for the influence of the multiple hybridizations on the long-term corrosion stability and thermal-related properties of the superhydrophobic coating is further systematically studied. The simple method and superhydrophobic coating should have good application prospects in large area protection.
引用
收藏
页码:7810 / 7821
页数:12
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