摘要在现代科学研究中，众多的实验都借鉴了现实中其他生物系统的功能和行为来推进研究的发展，该研究方法我们称之为仿生。典型的如飞机，雷达，海洋的声呐系统等，大大加速了科学技术的发展，造福了人类的生活。87730
荷叶，又称莲花茎、莲茎。荷叶，其表面有着许多个十分微小的乳突组织，由蜡覆盖。我们可以通过扫描电子显微镜观测到每个乳突的表面附着许许多多与其结构相似的纳米级颗粒，科学家将其称为荷叶的微米－纳米双重结构。这些十分细小的双重结构，大大减小了荷叶表面与外界物质的接触面积，因此就导致了水珠在叶面上滚动并且能带走灰尘的现象。而且水不滞留在荷叶表面。超疏水表面就是自此受到启发，通过多层微纳结构之间的空气层来减小液体与表面的接触，来达到防水、防结冰、防污、防腐、减阻的目的。
本文采用了溶液-凝胶法制备了蓬松干燥的二氧化硅粉末，以其为骨架，以PMMA基构造了一系列粗糙结构，通过氟硅烷（PDTS）修饰，然后喷涂到事先磨好的铝盘表面上，形成了表面稳定接触角大于150°的超疏水表面，并通过一系列的试验检测了该表面的防腐性能。
毕业论文关键词 仿生 超疏水 溶液-凝胶法 PMMA 防腐
毕业设计说明书外文摘要
Title Preparation of PMMA basic Superhydrophobic Coating on Aluminum Alloy with its drag reducing property
Abstract In modern science research,a plenty of experiments have use the experience of other biological systems’ functions and behaviors,in order to promote the progress of the research,which is called bionics。For example,airplanes,radar and sonar accelerate scientific research,benefit mankind a lot。
lotus leaf,whose surface is covered by countless micron-sized wax papillations。When we use SEM ,we can find that every papilla is covered by many
nanoparticles。Scientists call this lotus leaf’s micro - nanometer dual structure。
This structure reduce the surface’s contact area of the drop or other things,which causes the phenomenon that drop will roll away and take away the dust。 Superhydrophobic Coating,which use its air layer between the Multi-layer micro-nano structures to reduce the contact of drop and the surface,in order to get hydrophobic,anti-icing,anti-fouling,anti-corrosion or drag reducing properties。
In this research,we use sol-gel processing to fabricate dry and fluffy SiO2 powder。A series of rough surfaces have been fabricated on an aluminum dish, subsequently modified with low surface energy materials。 The prepared surfaces show high static contact angles more than 150° and small sliding angles lower
than 10°。At last,we test its anti-corrosion properties in many ways。
Keywords bionics superhydrophobic sol-gel PMMA anti-corrosion
目 次
1 绪论 1
1。1 引言 1
1。2 超疏水表面的理论基础与模型 1
1。3 超疏水表面的制备方法 4
1。4 超疏水表面的应用 6
1。5 本文研究内容及意义 7
2 SiO2/PMMA超疏水涂层的制备 8
2。1 引言 8源-于,优Z尔%论^文.网wwW.yOueRw.com 原文+QQ752018~766 铝合金表面PMMA基超疏水涂层研究:http://www.youerw.com/cailiao/lunwen_144303.html