三种钢基疏水表面微观形貌的分形特征及其对润湿性的影响

doi:10.7503/cjcu20200050

高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (6): 1313.doi: 10.7503/cjcu20200050

三种钢基疏水表面微观形貌的分形特征及其对润湿性的影响

蒋华义^1,²,刘梅¹,齐红媛^1,^2,^*(),梁爱国³,王玉龙^1,⁴,孙娜娜^1,²,武哲¹

^1. 西安石油大学石油工程学院, 西安 710065
^2. 西安石油大学陕西省油气田特种增产技术重点实验室, 西安 710065
^3. 克拉玛依红山油田有限责任公司, 克拉玛依 834000
^4. 西安交通大学能源与动力工程学院, 西安 710069

收稿日期:2020-01-22 出版日期:2020-06-10 发布日期:2020-04-05
通讯作者: 齐红媛 E-mail:hyqi@xsyu.edu.cn
基金资助:
陕西省自然科学基础研究计划项目(2019JQ-819);陕西省自然科学基础研究计划项目(2018JQ5206);国家自然科学基金(51904246);西安石油大学研究生创新与实践能力培养计划项目(YCS19212043);西安石油大学研究生创新与实践能力培养计划项目(YCS19212041)

Fractal Characteristics of the Microstructures of Three Hydrophobic Surfaces with Steel Substrate and Their Effects on Wettability ^†

JIANG Huayi^1,²,LIU Mei¹,QI Hongyuan^1,^2,^*(),LIANG Aiguo³,WANG Yulong^1,⁴,SUN Nana^1,²,WU Zhe¹

^1. College of Petroleum Engineering, Xi'an Shiyou University, Xi’an 710065, China
^2. Shaanxi Key Laboratory of Advanced Stimulation Technology for Oil & Gas Reservoirs, Xi'an Shiyou University, Xi’an 710065, China
^3. Karamay Hongshan Oilfield Co. Ltd., Karamay 834000, China
^4. School of Energy and Power Engineering, Xi'an Jiaotong University, Xi’an 710049, China

Received:2020-01-22 Online:2020-06-10 Published:2020-04-05
Contact: Hongyuan QI E-mail:hyqi@xsyu.edu.cn
Supported by:
† Natural Science Basic Research Program of Shaanxi Province, China(2019JQ-819);Natural Science Basic Research Program of Shaanxi Province, China(2018JQ5206);National Natural Science Foundation of China(51904246);Project on Cultivation of Graduate Innovation and Practice Ability of Xi'an Shiyou University, China(YCS19212043);Project on Cultivation of Graduate Innovation and Practice Ability of Xi'an Shiyou University, China(YCS19212041)

摘要/Abstract

摘要：

采用化学刻蚀与低表面能物质修饰相结合的方法, 通过调控刻蚀时间在304不锈钢、 X80管线钢和45#钢表面构造不同的微观形貌; 借助扫描电子显微镜采集不同材料表面的微观形貌, 并采用接触角测量仪测量其润湿性能; 应用Matlab软件编程计算分形参数. 结果表明, 3种材料构造的疏水表面均具有分形特征, 且最佳刻蚀时间为30 min, 此时多重分形谱子集维数最大值最靠左, 对应的奇异性指数最小, 表征表面微观形貌的分形维数也达到最大值; 分形维数与接触角线性拟合效果优良, 接触角随分形维数的增大而增大.

关键词: 微观形貌, 分形维数, 多重分形谱, 接触角, 润湿性

Abstract:

The microstructures on 304 stainless steel, X80 pipeline steel and 45# steel surfaces were prepared at different etching times by using the chemical etching and modification with low-surface-energy material. The microstructures and wettabilities of different material surfaces were obtained by a scanning electronic microscope and a contact angle meter, respectively. The fractal parameters were calculated by Matlab software. The results showed that the hydrophobic surfaces prepared on three materials had fractal characteristics. The optimal etching time was 30 min. At that time, the maximum subset of multifractal spectrum was close to the leftmost, the corresponding singularity index was the smallest, and the fractal dimension also reached the maximum. The linear fitting results of fractal dimension and contact angle was good. The contact angle increased with the increase of fractal dimension.

Key words: Microstructure, Fractal dimension, Multifractal spectrum, Contact angle, Wettability

中图分类号:

O647

TrendMD:

蒋华义,刘梅,齐红媛,梁爱国,王玉龙,孙娜娜,武哲. 三种钢基疏水表面微观形貌的分形特征及其对润湿性的影响. 高等学校化学学报, 2020, 41(6): 1313.

JIANG Huayi,LIU Mei,QI Hongyuan,LIANG Aiguo,WANG Yulong,SUN Nana,WU Zhe. Fractal Characteristics of the Microstructures of Three Hydrophobic Surfaces with Steel Substrate and Their Effects on Wettability ^†. Chem. J. Chinese Universities, 2020, 41(6): 1313.

图/表 6

Fig.1 Microstructures of three kinds of steel at 60 min etching time (A) 45# Steel; (B) X80 pipeline steel; (C) 304 stainless steel.

Table 1 Fractal dimensions(D) of three materials at different etching times

Material	D
Material	20 min	30 min	40 min	50 min	60 min
45# Steel	2.0431	2.0645	2.0555	2.0490	2.0496
X80 Pipeline steel	2.0571	2.0706	2.0613	2.0591	2.0550
304 Stainless steel	2.0648	2.0722	2.0654	2.0498	2.0614

Fig.2 Multifractal spectra of three materials at different etching times (A) 45# Steel; (B) X80 pipeline steel; (C) 304 stainless steel.

Fig.3 Dependence of the spectral width on etching time

Fig.4 Contact angles of three materials at different etching times (A) 45# Steel; (B) X80 pipeline steel; (C) 304 stainless steel.

Fig.5 Relationships of contact angle and fractal dimension (A) 45# Steel; (B) X80 pipeline steel; (C) 304 stainless steel.

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三种钢基疏水表面微观形貌的分形特征及其对润湿性的影响

Fractal Characteristics of the Microstructures of Three Hydrophobic Surfaces with Steel Substrate and Their Effects on Wettability ^†

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三种钢基疏水表面微观形貌的分形特征及其对润湿性的影响

Fractal Characteristics of the Microstructures of Three Hydrophobic Surfaces with Steel Substrate and Their Effects on Wettability †

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Fractal Characteristics of the Microstructures of Three Hydrophobic Surfaces with Steel Substrate and Their Effects on Wettability ^†