| 表面修饰TiO2、ZrO2纳米微粒的DSC、TGA表征 |
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| 引用本文： | 张平余,张治军,薛群基,吴志申,周静芳,扈艳红. 表面修饰TiO2、ZrO2纳米微粒的DSC、TGA表征[J]. 分析测试技术与仪器, 1995, 1(4): 48-51 |
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| 作者姓名： | 张平余 张治军 薛群基 吴志申 周静芳 扈艳红 |
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| 作者单位： | 中国科学院兰州化学物理研究所固体润滑开放研究实验室，河南大学化学系 |
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| 摘 要： | 采用ＤＳＣ及ＴＧＡ技术对制备的表面为硬脂酸修饰的二氧化钛及二氧化锆纳米微粒的热性能进行了研究，结合透射电的分析表征，结果表明，我们所得的ＴｉＯ２，ＺｒＯ２纳米微粒表面确为硬脂民修饰，由于其纳米微粒核的存在使其表面修饰层的熔点温度高；此外表面修饰纳米闰由于其大的比表面积和不稳定的晶体结构使其分别在７１０Ｋ左右产生粘着和型变。
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| 关 键 词： | 纳米微粒 DSC TGA 氧化钛 氧化锆 |
| 收稿时间： | 1995-05-27 |
| 修稿时间： | 1995-07-26 |
Characterization of Surface Modified Nano TiO2 and ZrO2 Particles by DSC and TGA |
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| Zhang Pingyu,Zhang Zhijun,Xue Qunji,Wu Zhishen,Zhou Jingfang and Hu Yanhong. Characterization of Surface Modified Nano TiO2 and ZrO2 Particles by DSC and TGA[J]. Analysis and Testing Technology and Instruments, 1995, 1(4): 48-51 |
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| Authors: | Zhang Pingyu Zhang Zhijun Xue Qunji Wu Zhishen Zhou Jingfang Hu Yanhong |
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| Affiliation: | Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000;Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000;Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000;Henan University, Kaifeng 475001;Henan University, Kaifeng 475001;Henan University, Kaifeng 475001 |
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| Abstract: | The thermal performances of nano TiO2 and ZrO2 partcles modified with stearic acid have been investigated by means of DSC and TGA. The results obtained, combined with the result of TEM analysis, show that the surfaces of nano TiO2 and ZrO2 particles are mded modified by stearic acid. The rise of melting points of the surface modified layers is caused by the existence of the nano particle nuclei. Besides. as the temperature rises to about 710 K,adhesion and crystal transformation in the nano particles occur due to their big specific surface area and unstable crystal structure. |
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| Keywords: | Nano particle DSC TGA |
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