介孔硅纳米微粒在酯类油中抗氧协同效应及其摩擦学性能研究

发布时间：2018-05-10 07:23

本文选题：介孔硅纳米微粒 + 抗氧协同作用　；参考：《河南大学》2015年硕士论文

【摘要】：本文研究了介孔硅纳米微粒作为酯类油添加剂的主要研究内容和结果如下:1)介孔硅纳米微粒的合成及结构表征以硅酸四乙酯为前驱体、十六烷基三甲基溴化铵为模板剂、三乙醇胺为催化剂,合成制备了介孔硅纳米微粒,并选择醇洗法去除模板剂。并采用多种现代测试手段对所得样品进行结构和性能表征:用透射电子显微镜表征介孔硅纳米材料的形貌、粒径;用X-射线粉末衍射仪对其物相进行分析,确定样品的结晶状态;用氮气吸附脱附分析表征了所得样品的孔结构、比表面积及孔径分布。结果表明,得到的介孔硅纳米微粒呈现球形,粒径为30nm左右,介孔结构呈现无序性,比表面积为112m2/g。2)介孔硅纳米颗粒抗氧化性能研究采用旋转氧弹测试、差示扫描量热分析、烧瓶氧化等方法测试了介孔硅纳米微粒作为酯类油添加剂的抗氧性能,结果表明,所制备的介孔硅纳米微粒未体现出抗氧效果,但却可以在一定程度上抑制氧化油品的颜色变化程度。3)介孔硅纳米微粒与传统抗氧剂的协同作用研究采用旋转氧弹测试、差示扫描量热分析、烘箱氧化等方法测试了介孔硅纳米微粒与传统抗氧剂的协同抗氧作用。结果表明,所制备的介孔硅纳米微粒与传统抗氧剂T512以及T203起到了一定的抗氧协同作用。4)介孔硅纳米微粒的摩擦学性能研究采用四球摩擦磨损试验机考察了介孔硅纳米微粒作为癸二酸二异辛酯(Dios)、偏苯三酸酯(1938)以及三羟甲基丙烷油酸酯(1427)三种酯类油基础油的抗磨添加剂时,添加浓度和载荷对其抗磨减摩性能的影响。结果表明,所制备的介孔硅纳米微粒在三种酯类油分散性一般,对其润滑性能没有坏影响的条件下,在一定程度上改善其抗磨性能。
[Abstract]:The main contents and results of mesoporous silica nanoparticles as oil additive are as follows: 1) synthesis and structural characterization of mesoporous silica nanoparticles were synthesized by four ethyl silicate as precursor, sixteen alkyl three methyl ammonium bromide as a template and triethanolamine as a catalyst. The structure and properties of the samples were characterized by a variety of modern testing methods. The morphology and particle size of mesoporous silicon nanomaterials were characterized by transmission electron microscopy. The phase of the samples was analyzed by X- ray powder diffractometer, and the crystalline state of the samples was determined. The pore structure of the samples was characterized by nitrogen adsorption desorption analysis. The results show that the mesoporous silica nanoparticles are spherical, the particle size is about 30nm, the mesoporous structure is out of order and the surface area is 112m2/g.2). The study of the oxidation resistance of mesoporous silicon nanoparticles by the rotating oxygen bomb test, differential scanning calorimetry, and the flask oxidation test the mesoporous silicon nanomicro. The results show that the prepared mesoporous silica nanoparticles do not show the effect of oxygen resistance, but they can inhibit the color change degree.3 of the oxidizing oil to a certain extent. The synergistic effect of the mesoporous silica nanoparticles and the traditional antioxidants is studied by rotating oxygen bomb test, differential scanning calorimetry analysis and baking. The synergistic anti oxygen effect of mesoporous silica nanoparticles and the traditional antioxidants was tested by box oxidation. The results showed that the mesoporous silica nanoparticles and the traditional antioxidant T512 and T203 had a certain antioxygen synergism.4) the tribological properties of mesoporous silica nanoparticles were investigated by four ball friction and wear tester. As the antiwear additive of two isooctyl sebacate (Dios), dichlorotriate (1938) and three hydroxymethyl propane oleate (1427) oil base oil, silicon nanoparticles add concentration and load to its antiwear and antifriction properties. The results show that the prepared mesoporous silica nanoparticles are dispersed in three kinds of ester oils and run on them. Under the condition that the slip property has no bad effect, the wear resistance is improved to a certain extent.

【学位授予单位】：河南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ127.2;TE626.9

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