三维打印的微结构疏水表面:形态和可湿性
Loredana Tammaro1, Sergio Galvagno1, Giuseppe Pandolfi1
1Laboratory Smart Components and Systems for Sustainable Manufacturing, Department for Sustainability, Division Technologies and Materials for Sustainable Manufacturing Industry, ENEA Research Center, 80055 Portici, Italy.
Polymers
|October 16, 2025
概括
化丝制造3D打印使用聚乳酸创建了微结构的疏水表面. 这些表面实现了超疏水性质,证明了自我清洁和防湿应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 表面工程是什么?表面工程是什么?
- 添加剂制造 添加剂制造 添加剂制造
背景情况:
- 开发具有量身定制的表面性能的先进材料对于各种技术应用至关重要.
- 控制表面的湿透性对于自清洁,抗结冰和微流体等功能至关重要.
- 合纤维制造 (FFF) 为创建复杂的3D微观结构提供了一个多功能平台.
研究的目的:
- 使用FFF3D打印设计和制造微结构化疏水表面.
- 为了研究不同几何图案对表面湿透性的影响.
- 探索表面功能化以进一步增强疏水性质.
主要方法:
- 使用聚乳酸 (PLA) 的 FFF 3D 打印来创建微结构表面.
- 开发了三种几何图案:以三角形为基础的镜 (TG),截断的金字塔 (TP) 和截断的圆形圆 (CET).
- 使用 SEM 描述了表面形态,并通过静态水接触角度 (WCAs) 评估了湿度.
- 用聚合物涂层SiO2纳米粒子应用表面功能化.
主要成果:
- TG结构实现了高达164°的WCAs的超疏水性行为,比平面PLA增加100%.
- 具有放大特征的TP和CET几何形状,导致WCAs高达128° (56%的增加).
- 打印机分辨率限制了利的CAD特征的保真性,需要对几何设计进行调整.
- 表面功能化在结构化表面上提供了额外的18%的可湿性增强.
结论:
- FFF 3D打印是一种可行的技术,用于制造具有可调节的疏水性质的微结构表面.
- 几何设计在实现所需的湿度方面发挥着至关重要的作用,TG结构表现出卓越的性能.
- 将微观结构与表面功能化相结合,提供了一条进一步增强抗湿能力的途径.
- 这些3D打印的疏水表面有望用于自洁,除冰和防湿技术的应用.
相关概念视频
02:57Surface Tension, Capillary Action, and Viscosity
Surface Tension
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
01:22Surface Tension of Fluid
Surface tension is a fundamental property of fluids, occurring at the boundary between a liquid and a gas or between two immiscible liquids. This phenomenon arises from the cohesive forces between molecules at the fluid's surface, creating an effect similar to a stretched elastic membrane. Inside each fluid, molecules are equally attracted in all directions by neighboring molecules, but surface molecules experience a net inward force, resulting in surface tension.
Surface tension varies with...
Surface tension varies with...