制冷技术2025，Vol.45Issue(4)：31-38,8.DOI:10.3969/j.issn.2095-4468.2025.04.106
亲水性纳米颗粒在氨水中的分散稳定性研究
Study on Dispersion Stability of Hydrophilic Nanoparticles in Ammonia-Water
摘要
Abstract
The nanoparticles and dispersants suitable for ammonia-water solution are selected in this paper.Eight hydrophilic nanofluids are prepared by two-step method,and the dispersion stability of the solution is further studied by sedimentation observation method and absorbance method.The results show that the initial absorption of both nanofluid increases with the increase of nanoparticle concentration,yet there are significant differences in the changes of absorbance.The absorbance of standing TiO2 nanofluid decreased dramatically within 15 hours,however,the absorbance of SiO2 nanofluid shows a linear and gradual change.The relative absorbance is compared laterally.After 65 hours of sedimentation,the relative absorbance of the TiO2 nanofluid up to 0.387.The relative absorption of SiO2 nanofluid is generally higher than 0.56,showing an overall trend better than that of TiO2 nanofluid.关键词
纳米溶液/亲水性/稳定性/分散性/氨水Key words
Nanofliud/Hydrophilicity/Stability/Dispersity/Ammonia-water分类
通用工业技术引用本文复制引用
袁清,宋金蔚,江巍雪,李龙,李彦军..亲水性纳米颗粒在氨水中的分散稳定性研究[J].制冷技术,2025,45(4):31-38,8.基金项目
江苏省高等学校基础科学(自然科学)研究面上项目(No.24KJB470030),炼油工艺与催化剂国家工程研究中心开放基金课题(No.36800000-23-ZC0609-0002). （自然科学）
