碳纳米管
材料科学
纳米复合材料
复合材料
接触角
氧化剂
硬脂酸
重铬酸钾
碳纤维
复合数
有机化学
化学
作者
Xiaoru Hao,Zhihao Cheng,Jun Xie,Yuxin Zhang,Haikun Zheng,Jiahui Zhou,Wei Sheng
出处
期刊:Nanotechnology
[IOP Publishing]
日期:2024-01-12
卷期号:35 (16): 165701-165701
被引量:1
标识
DOI:10.1088/1361-6528/ad1df3
摘要
Abstract In this paper, a preparation method of superhydrophobic composites of oxidized multi-walled carbon nanotubes modified by stearic acid (SA) is proposed. Hydroxylated multi-walled carbon nanotubes (HMWCNTs) were obtained by oxidizing multi-walled carbon nanotubes with potassium dichromate to give them hydroxyl groups on the surface. Subsequently, the carboxyl group in the SA molecule was esterified with the hydroxyl group on the HMWCNTs. SA molecules were grafted onto the surface of multi-walled carbon nanotubes. SA modified oxidized multi-walled carbon nanotubes (SMWCNT) superhydrophobic composites were obtained. The results show that the water contact angle (WCA) of superhydrophobic composites can reach up to 174°. At the same time, the modified nanocomposites have good anti-icing and corrosion resistance. After low temperature delayed freezing test, the freezing extension time of the nanocomposite film is 30 times that of the smooth surface. Under strong acid and alkali conditions, the superhydrophobic nanocomposites still maintain good superhydrophobicity. The nanocomposites may have potential applications in the preparation of large-scale superhydrophobic coatings.
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