| PyDDP修饰纳米硼酸镧极压剂制备及性能研究 |
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| 引用本文： | 田言,任南琪,李培志,冯玉杰,刘延坤.PyDDP修饰纳米硼酸镧极压剂制备及性能研究[J].材料科学与工艺,2008,16(6):768-772. |
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| 作者姓名： | 田言 任南琪 李培志 冯玉杰 刘延坤 |
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| 作者单位： | 哈尔滨工业大学市政环境工程学院; |
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| 摘 要： | 采用三步工艺合成了表面修饰剂二烷基二硫代磷酸吡啶(PyDDP),优化确定了PyDDP制备工艺条件,并利用红外光谱确认了其结构.将合成的PyDDP应用于硼酸镧表面修饰,并优化了合成的工艺参数.采用IR、TG-DTA、XRD等分析方法,对这3种表面修饰剂修饰的纳米微粒进行了表征.通过四球实验研究了所制备微粒的极压性能,并通过SEM、EDXA等方法对钢球表面的形貌、钢球表面存在的元素进行了分析.结果表明,以PyDDP为表面修饰剂获得了粒径约10 nm的PyDDP修饰的硼酸镧纳米微粒,其最大无卡咬负荷为745 N,并在蚀球表面发现了稀土元素.对PyDDP修饰硼酸镧结构与材料极压性能之间的关系进行了分析,指出稀土渗透层和稀土摩擦催渗硼的作用是该材料具有良好极压性能的主要原因.
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| 关 键 词： | 修饰 硼酸镧 PyDDP 极压剂 |
Preparation of lanthanum borate modified with pyridinium dialkyldithiophosphate (PyDDP) and estimation of its extreme properties |
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| TIAN Yan,REN Nan-qi,LI Pei-zhi,FENG Yu-jie,LIU Yan-kun.Preparation of lanthanum borate modified with pyridinium dialkyldithiophosphate (PyDDP) and estimation of its extreme properties[J].Materials Science and Technology,2008,16(6):768-772. |
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| Authors: | TIAN Yan REN Nan-qi LI Pei-zhi FENG Yu-jie LIU Yan-kun |
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| Affiliation: | School of Municipal and Environmental Engineering;Harbin Institute of Technology;Harbin 150090;China |
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| Abstract: | The technological conditions for preparation of pyridinium dialkyl dithiophosphate(PyDDP) were optimized and a three-step process was finally determined.A kind of white crystal of PyDDP was got and its structure was proved with IR.The technological process of lanthanum borate preparation modified with pyridinium dialkyl dithiophosphate(PyDDP) was also evaluated and a kind of extreme agent in lubricating oil was obtained.Its structure was investigated with IR,XRD and TG-DTA.The properties at extreme conditio... |
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| Keywords: | PyDDP |
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