中文摘要：

研究了一种制备超疏水表面的新方法。该方法以复制了荷叶表面结构的聚二甲基硅氧烷（PDMS）弹性体为软模板。利用可紫外光交联预聚物在模板压印条件下固化成型，得到了具有微乳突结构的仿荷叶表面。制备的仿荷叶表面表现出了超疏水性能。通过对紫外光固化体系中的单体含量、交联剂含量、引发剂含量、以及紫外曝光时间等因素的研究，得到了使仿荷叶表面的疏水性优化的条件。

英文摘要：

Super-hydrophobic surfaces have attracted great research interest due to their novel performance as selfcleaning, anti-fog, and anti-oxidation. In this work, a new approach, based on elastomeric templates and UV-curable resins, has been developed to prepare super-hydrophobic surfaces. Poly（dimethylsiloxane） （PDMS, Sylgard 184） was purchased from Dow Coming and used to replicate lotus-leaf surfaces. In the replication step, PDMS blocks were prepared through replica molding against lotus-leaf surfaces. PDMS prepolymer was prepared by mixing the elastomer base and curing agent in a ratio of 10：1. After 20 min, the PDMS prepolymer was poured into molds within freshlotus-leaf surfaces as masters.Then the prepolymer was cured in 40℃ oven for 4 h.After curing and peeling off, the PDMS blocks with negative lotus-leaf surfaces＇ structures were obtained. Microscope observation indicates that the PDMS blocks＇ surfaces were featured with hollow cavities of 7 - 12 microns in diameter. The PDMS blocks could be used as stamps in the following curing step of ultraviolet （UV）-curable prepolymers, which consist of oligomer, crosslinking agent, reactive monomer, and photo-initiator. In the experiment, isoboruyl acrylate, siliconized urethane acrylate, benzoin dimethyl ether and dipentaerythritol pentaacrylate were used as monomer, oligomer, photoinitiator and crosslinking agent, respectively. In a typical process, UV-curable prepolymer was prepared by mixing monomer, oligomer, photoinitiator and c rosslinking agent in a ratio of 10：68：2：20. Then the prepolymer was put into a 0.085 MPa vacuum oven to remove air bubble. The prepolymer was spread on substrates （ silicon wafer or glass slide）,pressed by the PDMS stamp with replicated lotus-leaf surface. Finally, the UV-curable prepolymer covered with the PDMS stamp was exposed to UV-light （500 μW/cm^2） .After curing for 15 min,the PDMS stamp was peeled off,and the cured sample was store in 40℃ oven for 5 h before further experiments. Measured by sca