直接合成掺杂型层状磷酸锆材料及其摩擦学特性研究

Molybdenum disulfide as the representative of the solid lubricant has excellent lubricating properties under heavy-duty and strong shock conditions, which is essential for developing materials used in aerospace, heavy machinery and other areas. Due to the scarcity of molybdenum resources, it is an issue of significance to search alternatives for molybdenum disulfide. The interlayer spacing and electric charge of layered zirconium phosphate material are similar to those of molybdenum disulfide, preliminary exploratory experiments prove that it had excellent solid lubricity. On the basis of the preparatory work, this project plans to further study the synthesis and lubricating properties of this relatively simple layered zirconium phosphate material.Using fluorine atoms as mineralizer,divalent cation exchanged layered zirconium phosphate material will be prepared by the direct hydrothermal synthesis. To further enhance the carrying capacity, abrasion resistance and other solid lubricating properties of the material, divalent and trivalent metallic elements of the zirconium part of isomorphous substitution layered zirconium phosphate material will be formed by ionothermal synthesis method to inhibite hydrolysis of metal salt. Investigation on the synergistic effects of layered structure and extreme pressure antiwear additive, and so on which are present in the lubricating grease will be carried out, thus providing fundamental data for practical application of materials. The variation rule of the properties of layered zirconium phosphate and friction pairs will be investigated. Characterization for the properties change of the lubricant and metal parts will disclose the correlation of inorganic materials structural composition, atomic coordination relationship, and lubrication effects, hence affording theoretical guidance to the development of layered sodium silicates with excellent lubrication behavior.

适合于高负荷、强冲击等苛刻条件下使用的二硫化钼等固体润滑剂，是航空航天、重型机械等领域发展所必需的材料。由于钼比较稀缺，寻找二硫化钼的替代品，是一个重要的研究课题。层状磷酸锆材料的层间距及电荷类型与二硫化钼类似，前期探索实验已证明它具有优良的固体润滑性。本项目将在已有研究的基础上，采用F离子促进的方式，以简便的一步法水热制备二价阳离子交换型层状磷酸锆材料；以离子液体热合成方法，抑制金属盐的水解，制备二价、三价金属元素对锆元素部分同晶取代的层状磷酸锆材料，进一步提升材料的承载力、抗磨性等固体润滑性质。开展润滑脂中层状材料与极压抗磨剂等添加剂的复配效果研究，为材料的实际应用提供基础数据。通过对实验中材料和被保护元件性质的变化规律表征，研究无机材料结构组成、原子配位关系与摩擦学特性之间的关联，为创新性地发现润滑特性优良的无机材料提供理论指导。

固体润滑剂适合于高负荷、强冲击等苛刻条件下使用，是航空航天、重型机械等领域发展所必需的材料。由于钼比较稀缺，寻找二硫化钼的替代品，是一个重要的研究课题。层状磷酸锆材料的层间距及电荷类型与二硫化钼类似，探索实验已证明它具有优良的固体润滑性。本项目采用F离子促进的方式，以简便的一步法水热制备二价阳离子交换型层状磷酸锆材料；以氮杂环有机物柱撑方法，制备了层间柱撑氮杂环有机物的层状磷酸锆材料，进一步提升了材料的承载力、抗磨性等固体润滑性质。研究表明，润滑脂中层状磷酸锆材料与极压、抗氧剂添加剂有着优良的复配效果；摩擦副不同运动形式和在不同基础油钙基脂中层状磷酸锆材料的润滑性能发现，层状磷酸锆材料具有稳定且优良的承载力和抗磨性能。通过对实验中材料和被保护元件性质的变化规律表征，研究了无机材料结构组成、原子配位关系与摩擦学特性之间的关联，为材料的实际应用提供了基础数据。