Peng Han, Li Yanchi, Shangguan Linjian, Chen Yike, Zhang Nannan
School of Mechanical Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China.
School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450046, China.
Gels. 2024 Sep 2;10(9):573. doi: 10.3390/gels10090573.
In the field of high-end equipment, the synergistic effect of friction-reducing agents plays an important role in the performance study of gel grease. Exploring its tribological and rheological properties can not only significantly reduce the coefficient of friction of mechanical components and enhance its viscosity at high temperatures but also effectively reduce energy consumption, thus improving the service life of high-end equipment. In this study, Schaeffler Load 460 gel grease was mixed with polysiloxane viscosity modifier (PV611) and molybdenum dialkyl dithiocarbamate (RFM3000) according to (3:1, 1:1, and 1:3), and its tribological properties and rheological properties were investigated by the MRS-10G friction and wear tester, MCR302 rotational rheometer, and crossover test. Comparative analyses of tribological and rheological properties were carried out. The results showed that the average coefficient of friction of Schaeffler Load 460 grease was reduced by 57.2%, 60%, and 71.9%, respectively, with the addition of two different ratios of friction reducers; the average diameter of abrasive spots was reduced by 44.5%, 55.4%, and 61.3%; and the shear stress and viscosity were increased by 117.94 Pa and 1295.02 mPa∙s, respectively, compared with that of the original grease, which is a good example for the lubrication of gel grease in the high-end equipment industry. This study provides a new direction and idea for the lubrication research of gel grease in the high-end equipment industry.
在高端装备领域，减摩剂的协同效应在凝胶润滑脂的性能研究中发挥着重要作用。探究其摩擦学和流变学性能，不仅能显著降低机械部件的摩擦系数并提高其高温下的黏度，还能有效降低能耗，从而延长高端装备的使用寿命。在本研究中，将舍弗勒460号负载凝胶润滑脂与聚硅氧烷黏度调节剂（PV611）和二烷基二硫代氨基甲酸钼（RFM3000）按（3:1、1:1和1:3）比例混合，通过MRS - 10G摩擦磨损试验机、MCR302旋转流变仪及交叉试验研究其摩擦学性能和流变学性能。对摩擦学和流变学性能进行了对比分析。结果表明，添加两种不同比例的减摩剂后，舍弗勒460号润滑脂的平均摩擦系数分别降低了57.2%、60%和71.9%；磨斑平均直径分别减小了44.5%、55.4%和61.3%；与原润滑脂相比，剪切应力和黏度分别增加了117.94 Pa和1295.02 mPa∙s，这是高端装备行业中凝胶润滑脂润滑的一个良好范例。本研究为高端装备行业中凝胶润滑脂的润滑研究提供了新的方向和思路。
