Surface Organic Modification of Nano-Sb2O3 Particles with Silane Coupling Agent

The surface modification of nano-Sb2O3 particles with silane coupling agent KH-570 was carried out by chemical modification method (CM) and ball milling modification method (BMM). The modification mechanism was also analyzed and discussed. The surface characteristics of modified nano-Sb2O3 particles were characterized by FTIR, TEM, BET and UV absorbance. The results showed that silane coupling agent could chemically anchor onto the surface of nano-Sb2O3 particles though the effect of covalent bond (Sb-O-Si), and the modified nano-Sb2O3 particles exhibited a good dispersive capacity in organic solvent. Comparative modification effect showed that the dispersion of nano-Sb2O3 particles modified by BMM was better than that of CM, due to the secondary aggregations of nano-Sb2O3 particles could be crushed in the ball milling modification process, which provided more reaction chance with silane coupling agent.