| PMMA-TiO2复合材料作为润滑添加剂的研究 |
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| 引用本文： | 官文超,危峰,谷战军. PMMA-TiO2复合材料作为润滑添加剂的研究[J]. 华中科技大学学报(自然科学版), 2003, 31(9): 108-110 |
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| 作者姓名： | 官文超 危峰 谷战军 |
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| 作者单位： | 华中科技大学化学系 |
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| 基金项目： | 国家自然科学基金资助项目(20074012). |
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| 摘 要： | 通过硅烷偶联剂“桥”的作用，引入了聚甲基丙烯酸甲酯(PMMA)，成功地制备出以无机纳米粒子TiO2为核，聚合物(PMMA)为壳的复合纳米材料。通过四球机研究了其作为水基液添加剂的摩擦学性能，实验结果证明，表面修饰的纳米粒子比未经修饰的纳米粒子具有较小的磨斑直径，较高的极压值；在高载荷下具有较好的抗磨、减磨性能。用透射电子显微镜(TEM)对其进行了形貌分析，用扫描电子显微镜(SEM)观察了钢球磨斑表面形貌。
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| 关 键 词： | PMMA-TiO2复合材料 摩擦学性能 核壳结构 |
| 文章编号： | 1671-4512(2003)09-0108-03 |
| 修稿时间： | 2003-01-20 |
Tribological properties of PMMA-TiO2 as additives in water-based lubrication |
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| Guan WencaoWei FengGu ZhanjunProf., Dept. of Chemistry,Huazhong Univ. of Sci. , Tech.,Wuhan ,China.. Tribological properties of PMMA-TiO2 as additives in water-based lubrication[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 2003, 31(9): 108-110 |
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| Authors: | Guan WencaoWei FengGu ZhanjunProf. Dept. of Chemistry Huazhong Univ. of Sci. & Tech. Wuhan China. |
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| Affiliation: | Guan WencaoWei FengGu ZhanjunProf., Dept. of Chemistry,Huazhong Univ. of Sci. & Tech.,Wuhan 430074,China. |
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| Abstract: | The surface of nanometer TiO_2 powders was modified by silane coupling agents and treated respectively by PMMA. A novel nanocomposite with the structure of TiO_2 as core and polymer as shell was prepared. The shape of the additives was viewed via Transmission Electron Microscope (TEM). Tribological properties of PMMA TiO_2 as additives in water based lubrication were studied by four ball machine, while wear scar of steel ball was observed by a Scanning Electron Microscope (SEM). It was found that modified TiO_2 possesses less Wear Scanning Diameter (WSD) and higher extreme pressure value, antiwear performance especially under high load. |
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| Keywords: | PMMA TiO_2 tribological properties core/shell structure |
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