項目類別：國家自然科學基金面上項目
項目編號：21473007
參與人員：鄭詠梅（負責人）
起止日期：2015-01~2018-12
基于仿生理念，構筑多層次結構表面的低溫超疏水/防覆冰功能材料體系，對抵抗航空航天飛行器、輸電纜線的冰凍損害有重要意義。本課題擬從生物多梯度結構憎水效應機制出發，突破現有防覆冰材料研究的局限性，通過綜合運用物理、化學、納米技術等交叉技術，構筑仿生尺度微納米結構易于引發智能性覆冰脫離表界面，通過構筑輕質、柔性的多級復合結構與智能響應性結構復合集成的仿生微納米結構梯度表面，以獲得極端條件下高性能低溫憎水/防覆冰性能參數。以仿生梯度界面動態調控極端疏水/憎冰性為研究主線，揭示不同溫度變化率引發的冰晶結構與界面之間的憎斥依賴關系，揭示表面對冰晶形成的延時特性的微觀實質。研究不同微觀結構與冰晶形貌之間脫粘附、超排斥決定因素。精細調控表面對液滴的靜/動態憎水行為，揭示微觀結構與低溫超疏水/防冰的內在因素，揭示依賴微納米結構調控的疏冰/防冰微觀機制，發展實用化的性能優異的仿生憎水/防覆冰材料
。
Based on bioinspired concept, the multi-level structured surfaces can be fabricated to investigate the low-temperature water repellency and anti-icing materials,which is significant to decrease the ice damage on aerospace vehicle or power lines and so on. This project will break through the limitation of traditional materials on ice-phobicity, bioinspired gradient-integrated materials with low-temperature water repellency and anti-icing functions will be intent to be investigated based on biomimetic concept of water repellency
mechanism from biological multi-gradient structures. The polymer and organic/inorganic composite materials will be selected to fabricate the smart multi-structures that are easy to induce the shedding-off of water condensed droplet and ice crystalline from the as-fabricated surfaces via the multi-techniques such as physical, chemical, nano-technological and so on. It will be further excepted to fabricate the light and flexible composite-structures and intelligent micro-/nanostructure gradient surface, to further obtain the performance parameters of robust low-temperature and anti-icing properties under ultra cold and humidity surroundings. A main route based on the dynamic controlling of ultra water repellency and ice-phobicity on bioinspired gradient surfaces is to reveal the repellency-related relationship of ice-crystalline and interfaces under different temperatures, and also to reveal essence at micro-/nano-level of icing delay time on the surfaces, to research the key factors of the adhesion, ultra-repellency, extreme shedding-off properties, to control carefully the static/dynamic behavior of icing on surface, to reveal the inherent factors between micro-/nanostructure and low-temperature/anti-icing, to reveal the micro-level
mechanism of controlling the ice-phobic/anti-icing dependence on multi-structures. This project is significant reference to design the novel materials with anti-icing functions.