摘要
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。
A waterborne nano-ATO slurry with a stability for more than 2 months was developed by using silane coupling agent to chemically modify and dispersant to physically cover the surface of nano-ATO in combination with adjusting dispersion process, viscosity and pH value of the slurry. FTIR analysis showed that silane coupling agent can be connected to the surface of nano-ATO. The optimal coverage effect was obtained when silane coupling agent KH570 was adopted with a dosage of 1.5% of the mass of nano-ATO, and the optimal dispersion effect was obtained when block copolymer dispersant 3275 was adopted with a dosage of 0.2% of the mass of slurry. The slurry has an optimal stability at viscosity 〉88 mPa.s and pH = 10. The transmission electron microscopic observation indicated that nano-ATO particle has a good dispersion in the slurry.
出处
《电镀与涂饰》
CSCD
北大核心
2009年第8期47-51,共5页
Electroplating & Finishing
基金
国家自然科学基金(50073006)
广东省科技攻关项目(2003B10507)
广州市科技攻关重大项目(2005Z1–D0041)
关键词
掺锑二氧化锡
纳米粒子
改性
水性浆料
分散
稳定性
antimony-doped tin oxide
nanoparticle
modification
waterborne slurry
dispersion
stability
