摘要
采用高分子表面修饰-共沸蒸馏工艺成功地制备了纳米氧化锆微粒;合成过程中高 分子的空间位阻作用阻碍了前驱体颗粒的长大,通过与正丁醇的共沸蒸馏有效地脱除了前驱体 内的水分,在颗粒表面形成了正丁醇分子的包裹结构,在随后的干燥过程中避免了颗粒间形成 强化学键,获得了平均粒径在20nm的无团聚的纳米微粒.纳米氧化锆微粒加入到润滑脂中能 明显改善后者的耐磨性能.
Zirconia with average crystalline size of 20nm, regular spherical particle and agglomeration free was successfully fabricated by surface modification of polymer and heterogeneous azeotropic distillation process. The space obstruct of polymer limits the growth of precursor. The distillation effectively dehydrates hydrous zirconia, which makes butanol molecular substituting water surround the precursor particle. The process prevents the formation of hard agglomerates between zirconia moleculars. When nanoparticles zirconia added, the antifriction properties of 932 lubricating oil can be improved.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第5期867-871,共5页
Journal of Inorganic Materials
基金
北京市科技新星资助项目
关键词
纳米氧化锆
表面修饰
共沸蒸馏
耐磨性能
制备
润滑脂
zirconia powder
surface modification
azeotropic distillation
antifriction properties