MB8镁合金超疏水表面的制备和润湿性

材料研究学报

2012, Vol. 26

Issue (3): 240-246

研究论文

本期目录 | 过刊浏览

MB8镁合金超疏水表面的制备和润湿性

李杰, 张会臣

大连海事大学交通运输装备与海洋工程学院大连 116026

Preparation and Wetting Behavior of Superhydrophobic Surface on MB8 Magnesium Alloy

LI Jie, ZHANG Huichen

Transportation Equipments and Ocean Engineering College, Dalian Maritime University, Dalian 116026

引用本文:

李杰张会臣. MB8镁合金超疏水表面的制备和润湿性[J]. 材料研究学报, 2012, 26(3): 240-246.
, . Preparation and Wetting Behavior of Superhydrophobic Surface on MB8 Magnesium Alloy[J]. Chin J Mater Res, 2012, 26(3): 240-246.

全文: PDF(996 KB)

摘要: 通过激光加工在MB8镁合金表面构造具有规则结构的纹理, 再制备1H, 1H, 2H, 2H--全氟葵烷基三氯硅烷(FDTS)自组装分子膜, 从而构建了MB8镁合金超疏水表面。
用扫描电子显微镜和接触角测量仪观察和测量试样表面的形貌和润湿性。结果表明, 激光加工在试样表面构造的粗糙结构和低表面能物质FDTS自组装分子膜使该试样具有超疏水性；经激光加工和沉积自组装分子膜后, MB8镁合金试样表面对水的接触角显著增大(达到150^o以上)。将MB8镁合金超疏水表面加工成漂浮平台, 承载能力的测试结果表明, 超疏水平台的漂浮承载能力明显比非超疏水性平台的大, 平台的承载能力与接触角的数值成正比。理论计算结果和``气垫''的存在表明, 该超疏水表面符合Cassie--Baxter状态模型, 对接触角理论值与测量值的分析表明分级粗糙结构对超疏水表面构建有重要作用。

关键词 ：材料表面与界面, 镁合金, 超疏水, 自组装分子膜, 接触角

Abstract：Superdrophobic surfaces on MB8 magnesium alloy substrate were prepared by regular surface texture by laser manufacturing and perfluorodecyltrichlorosilane (FDTS) self–assembled monolayers deposited on texturing surface. The surface properties and the contact angle of specimen were analysed. The results show that the contact angles of the water droplet on the substrates increase significantly (maximum value 150^o) after laser manufacturing and self–assembled monolayers preparation. Rough structure of substrate by laser manufacturing and low surface energy material FDTS self–assembled monolayers are the main factors for preparing superhydrophobic surface. The carrying capacity of platforms maded of superhydrophobic substrate increases with contact angle increasing, and is greater than that of non–superhydrophobic platforms significantly. The calculation results and the existence of “air cushion” are in accord with the Cassie–Baxter model’ state. Comparation of the contact angle between the measurement and theoretical value indicates that hierarchical structure plays an important role in preparation of superhydrophobic surface.

Key words： surface and interface in the materials magnesium alloy superhydrophobic self–assembled monolayers contact angle

收稿日期: 2012-04-09

ZTFLH:

O484

基金资助:

国家自然科学基金50975036资助项目。

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