超疏水表面高效制备方法及其在养殖工程中的应用  

High-efficiency Fabrication Method for Superhydrophobic Surfaces and Investigation of Applications in Cultivation Engineering

作　　者：王慧鑫 刘建龙[1] 王青华 霍连飞 柏宗春[1] WANG Huixin;LIU Jianlong;WANG Qinghua;HUO Lianfei;BAI Zongchun(Institute of Agricultural Facilities and Equipment,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China;School of Mechanical Engineering,Southeast University,Nanjing 211189,China)

机构地区：[1]江苏省农业科学院农业设施与装备研究所,南京210014 [2]东南大学机械工程学院,南京211189

出　　处：《中国表面工程》2023年第5期248-261,共14页China Surface Engineering

摘　　要：目前规模养殖业中养殖舍内灰尘、皮屑、粪污沾染问题严重,严重影响了环境清洁与动物健康。金属超疏水表面由于具有的特殊性质,有望成为改善养殖环境的重要手段。以鸭羽表面结构为仿生原型,以不锈钢为基底材料,利用激光加工方法制备仿生结构,同时利用低温硅油-热处理方法改变表面化学。最后通过超景深显微镜、SEM、XPS、接触角测量仪等对表面的理化性质进行测试。结果表明,通过表面结构与化学的双重影响,制备后的表面获得较好的超疏水性(接触角156.8°,滚动角2.7°),表面的自清洁性获得大幅提升,同时表面粪污粘附情况得到明显优化。通过激光-硅油热处理工艺,加工效率与经济性相比于传统超疏水表面制备方法得到显著提升,且制备过程清洁环保,可为仿生超疏水功能表面在养殖工程中的应用提供重要支持。After years of upgrading,the animal feeding industry is advancing toward large-scale production,modernization,and specialization,with the use of many advanced technologies.Due to their special surface functionalities,superhydrophobic metallic surfaces can effectively resolve issues of dust,dander,and dung adhesion and contamination in the animal house,ensuring a clean feeding environment and animal health.In recent years,laser surface-texturing has been widely used for fabrication of superhydrophobic metallic surfaces.However,post-process treatments including long storage time in air,heat treatment,and chemical immersion are required to achieve wettability transition from superhydrophilicity to superhydrophobicity,and can be time-consuming or toxic.Thus,a cost-effective,time-efficient,and health-friendly laser-based method for fabrication of superhydrophobic surfaces must be developed.In this study,laser surface-texturing experiments used a laser marking machine equipped with a 355-nm UV laser source.The laser-textured bionic surfaces were treated by dripping a mixed solution consisting of isopropyl alcohol and silicone oil on a hot plate at 100℃ for 10 minutes.The surface topography and chemical compositions of the laser-textured bionic surfaces were examined using a 3-D digital microscope,scanning electron microscopy(SEM),and x-ray photoelectron spectroscopy(XPS).The contact angle of the laser-textured bionic surfaces was evaluated using a contact-angle goniometer equipped with a high-resolution CMOS camera.Self-cleaning,anti-fouling,and long-term stability of the laser-textured bionic surface were also evaluated.There were several key findings in this study:(1)Laser surface-texturing can effectively fabricate bionic surfaces with periodically arrayed surface micro/nanostructures.This dual-scale surface structure with high surface roughness ensures that silicone oil can firmly adhere to the surface,enhancing the long-term stability of the fabricated superhydrophobic surface.(2)The surface chemistry analysis s

关 键 词：养殖工程 表面工程 激光加工 超疏水性 自清洁性 

分 类 号：TN249[电子电信—物理电子学] TB17[生物学—生物工程]