| 超细氧化铝粉体的表面改性研究 |
| |
| 引用本文： | 崔海萍,闫军,叶明惠.超细氧化铝粉体的表面改性研究[J].材料科学与工艺,2008,16(3):407-409. |
| |
| 作者姓名： | 崔海萍 闫军 叶明惠 |
| |
| 作者单位： | 军械工程学院基础部理化教研室,石家庄,050003;军械工程学院三系试验中心,石家庄,050003;军械工程学院基础部机械制造教研室,石家庄,050003 |
| |
| 基金项目： | 军械工程学院校科研和教改项目 |
| |
| 摘 要： | 利用两种硅烷偶联剂、三种钛酸酯偶联剂对Al2O3粉体颗粒表面有机改性,比较了不同偶联剂对颗粒表面的改性效果,结果表明硅烷偶联剂未能对粉体表面进行有效的有机改性.红外光谱分析证实了偶联剂NTC401在Al2O3粉体表面进行了化学吸附,而偶联剂JSC和CT136在Al2O3粉体表面主要发生物理吸附.电镜照片说明,经NTC401改性的Al2O3粉体粒子之间的团聚得到了有效改善,而经JSC和CT136改性的Al2O3粉体粒子之间的团聚未得到改善.机理分析认为中心钛原子六配位的结构能够有效阻止颗粒团聚.
|
| 关 键 词： | 偶联剂 超细氧化铝粉体 表面改性 团聚 |
Surface modification of superfine aluminum oxide powders |
| |
| CUI Hai-ping,YAN Jun,YE Ming-hui.Surface modification of superfine aluminum oxide powders[J].Materials Science and Technology,2008,16(3):407-409. |
| |
| Authors: | CUI Hai-ping YAN Jun YE Ming-hui |
| |
| Affiliation: | 1.Physical and Chemistry Section of Based Department,Ordnance Engineering College,Shijiazhuang 050003;China,2.Experiment Center of the Third Department,Ordnance Engineering College,Shijiazhuang 050003,China;3.Mechanism Manufactured Section of Based Department,Ordnance Engineering College,Shijiazhuang 050003,China) |
| |
| Abstract: | The effects of two silane-coupling agents(KH550,KH570) and three coupling agents of organic titanates(JSC,CT136 and NTC401) on the surface modification of superfine Al2O3 powders were tested and compared.The results showed that three coupling agents of organic titanates succeeded in modifying the surface of Al2O3 particle from hydrophilicity to lipophilicity,while the two silane-coupling agents failed.The IR spectrum analysis which also indicated that the chemical absorption occured between the agent of NTC401 and the of Al2O3 surface powders,but for agents of JSC and CT136,the physical absorption mainly occur.SEM photos of the powders showed that agglomeration-free particles could be obtained when the powders were treated by NTC401.While the powders tended to be agglomerated after being treated by JSC or CT136.The proper coupling mechanism was analyzed,which considered that the space structure of octahedral complex of Ti ion with six ligands could effectively impede agglomeration. |
| |
| Keywords: | coupling agent aluminum oxide superfine powders surface modification agglomeration |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
