【摘要】 采用硅烷偶联剂对纳米粒子(粒径30nm的TiO2、SiO2、ZnO)进行表面改性,并将改性后的纳米粒子用于氟碳涂料中,得到抗紫外自清洁纳米改性涂料。利用透射电镜TEM及沉降实验对纳米粒子的改性效果进行了表征,得到结果:改性后纳米粒子能均匀地分散到甲苯等有机溶剂中。通过紫外分光光度计和接触角测量仪分别对改性后的涂膜对紫外光的吸收及表面疏水的自清洁性能进行了表征,结果表明,改性后的涂膜能有效地吸收大气中的紫外光,并且测得纳米改性的涂膜比未改性的涂膜接触角明显增大,有较好的表面疏水自清洁功效。更多还原

【Abstract】 Nanoparticles (nano TiO2,nano SiO2,nano ZnO) are surface modified by silane coupling agent KH-570,the functional nano-modified coatings will be obtained after they are added to fluorocarbon coatings. Transmission election microscopy (TEM) and settlement experiments are used to characterize the effects of modified-nanoparticles. The results show that nanoparticles can be uniformly dispersed in the organic solvent such as toluene. By UV spectrophotometer and the contact angle measuring instrument,the UV absorption of the coating and the surface hydrophobicity of the self-cleaning properties were characterized. The final results illustrate that modified coatings can effectively improve the absorption in the UV band,and the contact angle of the nano-modified coating significantly increased as compared to the unmodified coating. Lastly,the surface hydrophobicity of self-cleaning effect is better.更多还原