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采用硅烷偶联剂对纳米掺锑二氧化锡(ATO)粒子表面进行化学改性,以分散剂对其进行物理包覆,调节分散工艺、体系黏度和pH,获得了稳定性可达到两个月以上的水性纳米ATO浆料。傅立叶红外光谱分析表明,硅烷偶联剂可以有效地包裹在纳米粒子表面。当采用硅烷偶联剂KH570,其用量为纳米ATO粒子质量的1.5%时,包覆效果最好;选用嵌段型分散剂3275,其用量为体系质量的0.2%时,分散效果最好;当体系黏度大于88mPa·s和pH=10时,浆料稳定性最好。透射电子显微镜观测表明,纳米ATO粒子获得了良好分散。
The surface of nano-doped antimony-doped tin oxide (ATO) particles was chemically modified with silane coupling agent and physically coated with dispersant to adjust the dispersion process, viscosity and pH of the system, and the stability was achieved for two months The above aqueous nano ATO slurry. Fourier transform infrared spectroscopy analysis showed that the silane coupling agent can be effectively wrapped on the surface of nanoparticles. When the silane coupling agent KH570 is used, the coating amount is 1.5% of the nano ATO particles, the coating effect is the best. When the block-type dispersant 3275 is used, the dispersion effect is best when the dosage is 0.2% of the system mass. The viscosity of the system is greater than 88mPa · s and pH = 10, the best slurry stability. Transmission electron microscopy observation showed that nano ATO particles obtained good dispersion.