无机材料学报2013，Vol.28Issue(6)：594-598,5.DOI:10.3724/SP.J.1077.2013.12475
油酸修饰对纳米二氧化钛在变压器油中分散性的影响
Effect of Oleic Acid Surface Modification on Dispersibility of TiO2 Nanoparticles in Transformer Oils
摘要
Abstract
Oleic acid modified TiO2 nanoparticles were dispersed into transformer oil to prepare TiO2 nanoparticles modified transformer oil by ultrasonic treatment.The effect of surface modification on the dispersibility of TiO2nanoparticles in the oil was investigated.The morphology,structure and surface modification state of TiO2 nanoparticles were characterized by X-ray powder diffraction (XRD),transmission electron microscope (TEM),Fourier transform infrared spectra (FT-IR) and thermogravimetric method (TG).The results show that oleic acid is bound on the surface of TiO2 nanoparticles by bidentate coordination,and an effective modification layer is formed.With the increasing of modifying agent dosage,although the coordination pattern of oleic acid on the nanoparticle surface remains,the mass fraction of chemisorbed oleic acid obviously increases.The dispersibility and stability of TiO2 nanoparticles in the oil is dramatically improved.When the molar ratio of titanium salt to oleic acid is 1∶24,TiO2 nanoparticles can be well dispersed in the transformer oil and keep transparent after aged for 30 d at room temperature.关键词
纳米二氧化钛/油酸/表面修饰/分散性/变压器油Key words
TiO2 nanoparticles/ oleic acid/ surface modification/ dispersibility/ transformer oil分类
化学化工引用本文复制引用
吕玉珍,张胜男,杜岳凡,陈牧天,李成榕..油酸修饰对纳米二氧化钛在变压器油中分散性的影响[J].无机材料学报,2013,28(6):594-598,5.基金项目
国家自然科学基金(51077050) （51077050）
中央高校基本科研业务费专项基金 （）
National Natural Science Foundation of China (51077050) （51077050）
Fundamental Research Funds for the Central Universities （）
