| 硬脂酸修饰纳米氧化钇的制备及其亲油特性 |
| |
| 引用本文： | 张林,余林,成晓玲,刁贵强.硬脂酸修饰纳米氧化钇的制备及其亲油特性[J].化工学报,2011,62(3):880-885. |
| |
| 作者姓名： | 张林 余林 成晓玲 刁贵强 |
| |
| 作者单位： | 广东工业大学轻工化工学院 |
| |
| 基金项目： | 广东省211学科建设项目 |
| |
| 摘 要： | 引 言
氧化钇独特的4f电子层结构1-2],使其具有了诸多的优良性能.在催化、陶瓷、光学玻璃、荧光、涂料等领域得到了广泛的应用3-4].作为润滑油添加剂,其抗磨减摩效果明显,抗磨润滑性能卓越,潜在发展空间较大5].纳米化后的氧化钇具有更多的新性能,然而,纳米氧化钇颗粒的粒径小、比表面积大、表面活性高、容易团聚使得纳米氧化钇的应用受到一定的局限6].
|
| 关 键 词： | 纳米氧化钇 改性 硬脂酸 亲油化度 |
Preparation and lipophilic performance of nano-Y2O3 modified with stearic acid |
| |
| ZHANG Lin,YU Lin,CHENG Xiaoling,DIAO Guiqiang.Preparation and lipophilic performance of nano-Y2O3 modified with stearic acid[J].Journal of Chemical Industry and Engineering(China),2011,62(3):880-885. |
| |
| Authors: | ZHANG Lin YU Lin CHENG Xiaoling DIAO Guiqiang |
| |
| Abstract: | Nano-Y2O3 was prepared by the precipitation method with polyvinyl alcohol as dispersant, and the nano-Y2O3was modified by stearic acid.Surface morphology， microstructure and lipophilic performance of nano-Y2O3 and modified nano-Y2O3 were characterized by XRD，IR，TG-DTA and TEM.The results showed that the phase and grain size of Y2O3 did not change after modification, and a covalent bond was formed between the hydroxyl of Y2O3 surface and carboxyl of stearic acid. An organic coating was formed on nano-Y2O3 and the polarity of nano-Y2O3 was changed from hydrophilicity to hydrophobicity.The lipophilic degree of modified nano-Y2O3 powder was up to 70.79%, under the condition of mass ratio of nano-Y2O3 to stearic acid 10∶2, pH 6.0 and modification time 120 min. |
| |
| Keywords: | |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《化工学报》浏览原始摘要信息 |
|
点击此处可从《化工学报》下载全文 |
|
