赖俊,翁灿,王飞,杨冬娇.超疏水表面微结构的设计及其注射成型[J].表面技术,2018,47(11):34-40.
LAI Jun,WENG Can,WANG Fei,YANG Dong-jiao.Design and Injection Molding of Superhydrophobic Micro-structured Surface[J].Surface Technology,2018,47(11):34-40 |
| 超疏水表面微结构的设计及其注射成型 |
| Design and Injection Molding of Superhydrophobic Micro-structured Surface |
| 投稿时间：2018-06-13 修订日期：2018-11-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2018.11.005 |
| 中文关键词: 超疏水 润湿性 微结构 聚丙烯 注射成型 热力学分析 |
| 英文关键词:superhydrophobic wettability micro- structure polypropylene injection molding thermodynamic analysis |
| 基金项目:国家自然科学基金面上项目（51775562）；中南大学研究生自主探索创新项目（2018zzts467） |
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| Author | Institution |
| LAI Jun | School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China |
| WENG Can | School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China |
| WANG Fei | School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China |
| YANG Dong-jiao | School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China |
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| 中文摘要: |
| 目的 从超疏水表面的功能设计出发，主动设计三种深宽比的微结构阵列并洞察其在不同润湿接触状态下的疏水性能。方法 首先，采用热力学分析方法，建立三种深宽比微结构的系统自由能与其接触角、结构几何参数之间的函数关系，探明自主设计微结构表面的润湿性能。继而，在热力学分析的基础上，采用紫外光刻、电铸和注射成型技术相结合的方法实现三种深宽比微结构聚丙烯（PP）超疏水表面的制备。最后，进一步测量与分析聚丙烯（PP）微结构表面的润湿性能。结果 三种深宽比微结构表面的静态接触角测量值均大于150?，滚动角分别为12?、14?和15?，基本达到设计目标；同时，微结构表面的表观接触角测量值与理论计算值基本符合。表面的接触角滞后分别为15?、21?、22?，且接触角滞后随着深宽比的增加而变大，使液滴在PP表面的流动性也变差。结论 在设计微结构超疏水表面的过程中，可以适当降低微结构的深宽比，以获取更好的超疏水特性。自主设计的微结构表面基本实现超疏水性，为高聚物超疏水表面的功能设计与高效制备提供了理论依据与技术支撑。 |
| 英文摘要: |
| The work aims to design, three micro-structure arrays with different aspect ratios from the functional design of super-hydrophobic surface and explore their hydrophobicities under different wetting contact states. Firstly, the thermodynamic analysis method was adopted to establish the functional relationships among the system free energy, contact angle and geometrical parameters of three micro-structures with different aspect ratios and investigate the wettability of selef-designed microstructure surface. Then, the polyprophylene micro-structured surfaces were fabricated by combining the UV photolithography, electroforming and injection molding technologies on the basis of thermodynamic analysis. Finally, the wettability was further measured and analyzed. The static contact angles of three designed surfaces were larger than 150?. The rolling angles were re-spectively 12?, 14? and 15? and basically achieved the design goal. The measured contact angles of the function-oriented designed microstructured surfaces agreed well with the theoretical values. The contact angle hysteresis of three surfaces was 15?, 21? and 22?, respectively. The contact angle hysteresis increased as the aspect ratio increased, and the liquidity of the droplets on the PP surface also deteriorated. In the process of designing the superhydrophobic surface of the microstructure, the aspect ratio of the microstructure can be appropriately reduced to obtain better superhydrophobic properties. The self-designed microstructure surface basically realizes superhydrophobicity, which provides theoretical basis and technical support for the functional design and efficient preparation of superhydrophobic polymer surfaces. |
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