有机氟硅烷对玻璃表面的浸润改性

为研究有机氟硅烷对玻璃表面润湿性的影响,利用1H,1H,2H,2H-全氟癸基三乙氧基硅烷对普通玻璃表面进行化学修饰,在玻璃基体表面形成含有-CF3的强疏水性基团。通过控制试验温度和处理时间,研究了不同处理条件下玻璃表面的疏水效果的变化趋势。通过对玻璃表面进行不同程度的打磨处理,研究了玻璃表面粗糙度对表面接触角的影响。利用扫描电子显微镜(SEM)、表面粗糙度测试仪和红外光谱(FTIR)对玻璃表面处理后形貌、粗糙度和化学结构进行了观察和表征,利用表面接触角仪测定了不同处理条件后玻璃表面的接触角。结果表明,浸润时间与温度的增加在一定范围内均可提高玻璃表面疏水性,且表面粗糙度的增加有利于疏水性能的提高。最终通过将表面粗糙化与表面化学修饰相结合,使玻璃表面获得优异疏水性能,表面接触角最高可达到127.9°。

Development and Application of Ironbased Hardfacing Fluxcored Wire

The ordinary glass surface was chemically modified by using 1H, 1H, 2H, 2Hperfluorodecyltriethoxysilane, on which highly hydrophobic groups containing CF3 was formed. By changing time and temperature during the experiment, the change trend of hydrophobic effect of glass under different treatments was studied. Additionally, the effect of surface roughness on the surface contact angle was also studied by different degrees of grinding processing on the glass surface. The surface morphology, roughness and the chemical structure of the glass were studied by scanning electron microscope (SEM), surface roughness tester and Fourier transform infrared spectrometer (FTIR). The surface contact angle of the glass under different treatment conditions were measured by the surface contact angle tester. The results show that increasing time and temperature can improve the surface hydrophobicity of the glass, and the roughness has the same influence on the glass. Finally, by combining the surface roughness with the chemical modification of the glass, outstanding performance of the glass can the obtained and the surface contact angle can attain up to 127.9°.