含羟基硅酸盐的自修复钛基脂的研发

发布时间：2018-05-15 13:39

本文选题：复合钛基润滑脂 + 摩擦　；参考：《哈尔滨工业大学》2012年硕士论文

【摘要】：复合钛基润滑脂是一种新型的高性能复合皂基脂，拥有许多传统润滑脂不具备的优异性能，应用前景十分广泛。然而，在复合钛基润滑脂产品化研究中，还存在析油、硬化储存不稳定等问题需要解决。制备具有特殊性能的高端润滑脂一直是润滑脂研发的目标之一，近年来，出现了一种可以赋予润滑剂自修复功能的羟基硅酸盐自修复剂，在润滑油中已得到应用，在润滑脂中效果尚未见报道，因此，研发一种具有自修复功能的复合钛基润滑脂，扩大其应用领域具有重要意义。本文搭建了实验室用复合钛基润滑脂制备装置，从优化复合钛基润滑脂的配方与工艺入手，研究了原料比例和添加顺序对润滑脂性能的影响，分别利用扫描电镜和透射电镜观测了复合钛皂皂纤维形态，揭示出其皂纤维呈现空间网状团絮结构特征，进一步从复合钛基脂胶体结构出发，建立了复合钛基脂结构模型，研究了影响钛基脂析油和表面硬化的因素，探索了提高复合钛基脂储存安定性的途径。采用红外能谱和质谱等方法，分析了钛基脂制备各阶段的产物，确定出在最高炼制温度阶段反应物形成了Ti-O-Ti桥的新缔合，揭示出复合钛基脂的成脂机理。利用四球摩擦试验机和润滑脂性能测定仪，研究了润滑脂的理化和摩擦学性能，结果表明，本文所研制的复合钛基脂具有较高的滴点，较好的剪切安定性和抗水淋性，以及较佳的减摩抗磨性能。在此基础上，提出了自修复钛基润滑脂的制备工艺，，测试了含羟基硅酸盐的钛基脂的理化性能，研究了工作时间、工作载荷、以及羟基硅酸盐自修复剂的用量对复合钛基脂自修复性能的影响，初步制备出一种具有自修复功能的复合钛基润滑脂。利用四球摩擦试验机与M-200磨损试验机，研究了含羟基硅酸盐自修复剂对钛基润滑脂自修复特性的影响，建立了自修复钛基脂润滑模型，探讨了其摩擦磨损自修复机理。本文初步得出了实验室制备自修复钛基润滑脂的配方与工艺，为研究润滑脂的自修复性能提供了借鉴，为自修复钛基润滑脂的工业制备提供了指导。
[Abstract]:Complex titanium base grease is a new type of high performance composite soap base grease, which has many excellent properties that traditional grease does not have, and has a wide application prospect. However, in the study of the production of complex titanium base grease, there are still some problems such as oil evolution and instability of hardened storage. The preparation of high-end lubricating greases with special properties has been one of the targets of the research and development of lubricating greases. In recent years, a hydroxy silicate self-repairing agent, which can endow lubricant with self-repairing function, has been applied in lubricating oils. The effect in grease has not been reported yet, so it is of great significance to develop a kind of complex titanium base grease with self-repairing function and expand its application field. In this paper, a laboratory equipment for the preparation of complex titanium grease was set up. The effects of raw material ratio and addition sequence on the performance of the grease were studied by optimizing the formula and process of the complex titanium base grease. The morphology of composite titanium soap fiber was observed by scanning electron microscope and transmission electron microscope, which revealed that the soap fiber presented the structure characteristics of space netted flocs, and further established the structure model of composite titanium base lipid from the colloidal structure of composite titanium base lipid. The factors affecting oil evolution and surface hardening of titanium base lipids were studied and the ways to improve the storage stability of composite titanium base lipids were explored. The products of each stage of titanium base lipid preparation were analyzed by means of infrared spectrum and mass spectrometry. The new association of reactants formed by Ti-O-Ti bridge at the highest refining temperature was determined, and the fat-forming mechanism of composite titanium base lipid was revealed. The physicochemical and tribological properties of lubricating grease were studied by using four-ball friction tester and grease performance tester. The results show that the composite titanium base grease developed in this paper has higher dropping point, better shear stability and water resistance. And better antifriction and wear performance. On this basis, the preparation process of self-repairing titanium base grease was put forward, the physical and chemical properties of titanium base grease containing hydroxyl silicate were tested, the working time and working load were studied. The effect of the amount of hydroxy silicate self-repairable agent on the self-repairing performance of composite titanium base grease was studied. A self-repairing complex titanium base grease with self-repairing function was preliminarily prepared. The effects of hydroxyl silicate self-repairable agent on the self-repairing characteristics of titanium base grease were studied by using four-ball friction tester and M-200 wear tester. The lubrication model of self-repairing titanium base grease was established and the friction and wear self-repairing mechanism was discussed. In this paper, the formula and process for the preparation of self-repairing titanium grease in laboratory are preliminarily obtained, which provides a reference for the study of the self-repairing performance of the grease, and provides guidance for the industrial preparation of the self-repairing titanium base grease.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH117.2

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