| 水溶性纳米SiO2的制备及其摩擦学性能 |
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| 引用本文： | 余国贤,张倩,孙末宾,周晓龙. 水溶性纳米SiO2的制备及其摩擦学性能[J]. 医学教育探索, 2011, 0(3): 299-304 |
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| 作者姓名： | 余国贤 张倩 孙末宾 周晓龙 |
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| 作者单位： | 江汉大学化学与环境工程学院，武汉 430056；华东理工大学化工学院，上海 200237;华东理工大学化工学院，上海 200237;华东理工大学化工学院，上海 200237;华东理工大学化工学院，上海 200237 |
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| 基金项目： | 上海市科研计划项目（0352nm027） |
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| 摘 要： | 以硅酸钠为原料，采用聚乙二醇为表面修饰剂及聚丙烯酸钠为分散剂，通过CO2沉淀法制备了水溶性纳米SiO2。通过透射电子显微镜（TEM）、X射线衍射仪(XRD)和傅里叶变换红外光谱仪(FT-IR)对水溶性纳米SiO2粒子进行表征；利用四球机考察了水溶性纳米SiO2粒子及其同辛丁基二硫代磷酸双β羟乙基十八胺盐（简称DDPN）组成的两种水基润滑液的摩擦学性能，研究了纳米SiO2粒子同DDPN的协同作用，并
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| 关 键 词： | 水溶性； 纳米SiO2粒子； 制备； 摩擦学性能 |
| 收稿时间： | 2010-11-19 |
Preparation of Water-Soluble SiO2 Nano-Particles and Its Tribological Properties |
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| YU Guo-xian,ZHANG Qian,SUN Mo-bin and ZHOU Xiao-long. Preparation of Water-Soluble SiO2 Nano-Particles and Its Tribological Properties[J]. Researches in Medical Education, 2011, 0(3): 299-304 |
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| Authors: | YU Guo-xian ZHANG Qian SUN Mo-bin ZHOU Xiao-long |
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| Affiliation: | School of Chemistry and Environmental Engineering, Jianghan University, Wuhan 430056, China; School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | Water-soluble SiO2 nano-particles were prepared from sodium silicate by a CO2 precipitation method using polyethylene glycol as surface modifier and sodium polyacrylate as dispersant. Morphology and structure of SiO2 nano-particles were investigated by TEM, XRD and FT-IR. Tribological properties of two water-based lubricants composed of water-soluble SiO2 nano-particles with or without DDPN were investigated by a four-ball machine to determine the synergy of the nano-particles and DDPN. Wear scars on the steel ball surfaces were studied by SEM and AES. Results showed that SiO2 nano-particles with a size distribution from 2 nm to 5 nm had no obvious aggregation. The water-soluble SiO2 nano-particles had synergy effects with DDPN on wear resisting and friction reducing. Thus, the tribological performance of the blend was higher than that of the each component. The mixture of 0.15% SiO2 nano-particles and 5.0% DDPN had the highest tribological properties with the pB value of 902 N and DWS of the steel balls of 0.63 mm. The water-soluble SiO2 nano-particles had good self-repairing performance during friction. |
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| Keywords: | water-soluble SiO2 nano-particles preparation tribological properties |
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