項(xiàng)目類別：國家自然科學(xué)基金面上項(xiàng)目
項(xiàng)目編號：21473007
參與人員：鄭詠梅（負(fù)責(zé)人）
起止日期：2015-01~2018-12
基于仿生理念，構(gòu)筑多層次結(jié)構(gòu)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(jié)構(gòu)憎水效應(yīng)機(jī)制出發(fā)，突破現(xiàn)有防覆冰材料研究的局限性，通過綜合運(yùn)用物理、化學(xué)、納米技術(shù)等交叉技術(shù)，構(gòu)筑仿生尺度微納米結(jié)構(gòu)易于引發(fā)智能性覆冰脫離表界面，通過構(gòu)筑輕質(zhì)、柔性的多級復(fù)合結(jié)構(gòu)與智能響應(yīng)性結(jié)構(gòu)復(fù)合集成的仿生微納米結(jié)構(gòu)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(shù)。以仿生梯度界面動態(tài)調(diào)控極端疏水/憎冰性為研究主線，揭示不同溫度變化率引發(fā)的冰晶結(jié)構(gòu)與界面之間的憎斥依賴關(guān)系，揭示表面對冰晶形成的延時(shí)特性的微觀實(shí)質(zhì)。研究不同微觀結(jié)構(gòu)與冰晶形貌之間脫粘附、超排斥決定因素。精細(xì)調(diào)控表面對液滴的靜/動態(tài)憎水行為，揭示微觀結(jié)構(gòu)與低溫超疏水/防冰的內(nèi)在因素，揭示依賴微納米結(jié)構(gòu)調(diào)控的疏冰/防冰微觀機(jī)制，發(fā)展實(shí)用化的性能優(yōu)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.