方柱织构参数对吻合器钛钉表面疏水性能的影响  

Effect of Texture Parameters of Square Column on the Hydrophobicity of the Titanium Nail Surface of Stapler

作　　者：段俊宇 胡亚辉 杨小洋[1,2] 刘卓 付蔚华[3] 郑清春[1,2] DUAN Junyu;HU Yahui;YANG Xiaoyang;LIU Zhuo;FU Weihua;ZHENG Qingchun(Tianjin Key Laboratory of the Design and Intelligent Control of the Advanced Mechatronical System,Tianjin 300384,China;National Demonstration Center for Experimental Mechanical and Electrical Engineering Education(Tianjin University of Technology),Tianjin 300384,China;Department of Gastrointestinal and Anorectal Surgery,General Hospital of Tianjin Medical University,Tianjin 300052,China)

机构地区：[1]天津市先进机电系统设计与智能控制重点实验室,天津300384 [2]机电工程国家级实验教学示范中心(天津理工大学),天津300384 [3]天津医科大学总医院胃肠肛肠外科,天津300052

出　　处：《润滑与密封》2022年第9期44-49,145,共7页Lubrication Engineering

基　　金：国家自然科学基金项目(11672208;81741141);天津市科技支撑重点项目(18YFZCSY00890)。

摘　　要：对于吻合器钛钉等体内植入物,感染的第一步是细菌在材料表面的黏附,提高表面疏水性是减少细菌黏附的有效方法。基于仿生学和有限元仿真技术,通过在吻合器钛钉表面加工方柱织构,建立织构表面的液滴铺展模型,利用商用CFD软件ANSYS Fluent研究织构宽度、间距和高度对接触角的影响规律,分析织构参数对钛钉表面疏水性能的影响。仿真结果表明,在给定的织构参数范围内,钛钉表面方柱织构有效提升了表面疏水性,织构宽度和间距对接触角影响显著,且接触角随宽度和间距的增加都呈先增大后减小的趋势,最佳疏水结构为宽度略小于间距,而高度对接触角的影响几乎可以忽略,随着高度增加疏水性略微增大。For internal implants such as stapler titanium nails,the first step of infection is the adhesion of bacteria on the surface of the material.Improving surface hydrophobicity is an effective way to reduce bacterial adhesion.Based on bionics and finite element simulation technology,a square column texture was machined on the surface of the stapler titanium nail,and a droplet spreading model on the textured surface was established.The commercial CFD software ANSYS Fluent was used to study the effect of the texture width,spacing and height on the contact angle.The influence of texture parameters on the hydrophobic properties of the titanium nail surface was analyzed.The simulation results show that,within a given range of texture parameters,the square column texture on the surface of the staples effectively improves the surface hydrophobicity.The width and spacing of the texture have a significant impact on the contact angle,and the contact angle increases first and then decreases with the increase of the texture width and spacing.The optimal hydrophobic structure is that the width is slightly smaller than the spacing,and the influence of height on the contact angle is almost negligible.With the increase of the texture height,the hydrophobicity increases slightly.

关 键 词：吻合器钛钉 织构参数 CFD数值仿真 接触角 疏水性能 

分 类 号：TG178[金属学及工艺—金属表面处理]