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Luo T.,Xihua University | Wei X.,Xihua University | Luo S.,Xihua University | Li H.,Xihua University | Li W.,Jinan Huanghe Road and Bridge Engineering Company
Asian Journal of Chemistry | Year: 2013

The Al2O3 nanoparticles were prepared by in situ-modified method and modified with KH-560. The particle size analysis confirmed that the mean particle size of modified Al2O3 nanoparticles was 90 nm and its distribution was uniform. The dispersion of modified Al2O3 nanoparticles was analyzed by the absolute value of Al2O3 nanoparticles zeta potential. Through scanning electron micrograph, it was found that KH-560 improved the dispersibility of Al2O3 nanoparticles. The hydroxyl groups on the surface of Al2O3 nanoparticles can interact with the hydroxyl groups of KH-560 and an organic coating layer was formed. The formed covalent bands were testified by Fourier transform infrared spectra. Because of the introduction of grafted polymers on the surface of nanoparticles, the dispersion stabilization of modified Al2O3 nanoparticles in lubricating oil is significantly improved. © 2013 Asian Journal of Chemistry. Source


Jin Z.,Shandong Agricultural Machinery Research Institute | Min L.Q.,Shandong Agricultural Machinery Research Institute | Yang Z.S.,Jinan Huanghe Road and Bridge Engineering Company
Advanced Materials Research | Year: 2013

Frame of the van is the basis for mounting of the other assemblies, by sustaining the various kinds of force and load from the road and the weight, so the strength and stiffness of the frame is the very important on the overall design of the van. This thesis does an analysis and research in accordance with ANSYS, discussing the frame's static strength of the warp working status and the torsion working status, and doing an analysis of stiffness. The result of analysis shows that the frame's ultimate stress is lower than the ultimate strength of material, satisfy the design demand. But the strength of material is overall higher, so the economic efficiency is low. This thesis is also provided the parameter for the nest step design of stress centralization areas and unreasonable design structure. © (2013) Trans Tech Publications, Switzerland. Source


Dong W.,Jinan Huanghe Road and Bridge Engineering Company | Ma S.,Jinan Huanghe Road and Bridge Engineering Company | Wang X.,Jinan Huanghe Road and Bridge Engineering Company | Cao J.,Jinan Huanghe Road and Bridge Engineering Company
Asian Journal of Chemistry | Year: 2013

In this work, the ZnO/Al2O3 nanocomposites are prepared by situ-modified method and the ZnO/Al2O3 nanocomposites are modified by silane coupling agent. By using the particle size analysis, it is confirmed that the mean particle size of modified ZnO/Al 2O3 nanocomposites is 68 nm and its distribution is uniform. The dispersion of modified ZnO/Al2O3 nanocomposites is analyzed by the absolute value of ZnO/Al2O 3 nanocomposites zeta potential. Through scanning electron microscope studies, it is found that the silane coupling agent improve the dispersibility of ZnO/Al2O3 nanocomposites. The hydroxyl groups on the surface of ZnO/Al2O3 nanocomposites can interact with hydroxyl groups of silane coupling agent and an organic coating layer is formed. The formed covalent bands are testified by Fourier transform infrared spectra (FT-IR). The dispersion stabilization of modified ZnO/Al2O 3 nanocomposites is significantly improved due to the introduction of grafted polymers on the surface of nanoparticles. In addition, their surfaces become organic phase from inorganic phase. Copyright © 2013 Asian Journal of Chemistry. Source

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