纳米杂化氟硅防指纹剂的制备及涂层性能研究

Synthesis and Properties of Novel Nano-Hybrid Fluorosilicone Anti-Fingerprint Coating

将正硅酸乙酯（TEOS）、1，2-双（三乙氧基硅基）乙烷（BTESE）以及全氟辛基三乙氧基硅烷（POTS）通过水解缩合反应，制得纳米杂化氟硅防指纹剂TBF—SiO2。通过红外光谱（FT-IR）、紫外一可见分光光度计、热重分析仪（TG）、场发射扫描电镜（FE-SEM）等仪器对其分别进行了结构表征、透光率及热性能分析和微观形貌观察等。结果表明：当TBF—SiO2涂层的应用温度在25-200℃之间、n（POTS）：n（TEOS）=3：10、TBF-SiO2的质量分数为0．6％、喷涂层数为2层时，得到的涂层热稳定性和透明度良好、附着力强且疏水疏油性最佳，其水和油接触角分别达到了121．6°、101．7°。经过场发射扫描电镜（FE—SEM）可观察到规则且粗糙不平的类似于荷叶表面的微纳米级结构，实现了无机粒子和低表面能材料在玻璃表面的有机结合。

A nano-hybrid fluorosilicone anti-fingerprint agent TBF-SiO2 was synthesized by using tetraethyl orthosilicate （TEOS）, bis （triethoxysilyl） ethane （BTESE） and perfluoro -octyl triethoxysilane （POTS） as raw materials via hydrolysis-condensation. The structure, light transmittance and thermal performance of the TBF-SiO2 were characterized by FT-IR, SEM, TEM, TGA and UV-visible spectrophotometer. The results showed that when the TBF- SiO2 coating was exposed to the temperature between 25℃ and 200 ℃, the molar ratio of POTS to TEOS was 3：10, the mass ratio of TBF-SiO2 was 0. 6%, and two layers was sprayed, the coating gave good thermal stability, transparency, adhesion, hydrophobie/oleophobie properties. For instance, the water and oleo contact angles reached 121.6 °and 101.7 °. The field emission scanning electron microscope （FE-SEM） indicated that the regular and rough micro/nano-level structure similar to the lotus leaf surface was formed, which achieved the or- ganic combination of inorganic particles and low surface energy materials on surface of glass.