基于流变特性的润滑脂胶体分散体系性能评价  

Evaluation on Lubricating Grease Colloidal Dispersion System Properties Based on Rheological Behaviors

作　　者：潘家保 曹帅[3] 钱明[1] 周彬 唐铃凤 

机构地区：[1]安徽工程大学机械与汽车工程学院,安徽芜湖241000 [2]江苏大学国家水泵及系统工程技术研究中心,江苏镇江212013 [3]中国矿业大学机电工程学院,江苏徐州221116

出　　处：《润滑与密封》2018年第2期65-70,99,共7页Lubrication Engineering

基　　金：安徽高校自然科学研究项目(KJ2017A110);国家水泵及系统工程技术研究中心开放基金项目(NRCP201602);安徽工程大学引进人才科研启动基金项目(2016YQQ010)

摘　　要：提出一种基于流变特性测试的润滑脂胶体分散体系性能评价方法,可实现润滑脂静态缠结、动态结构强度和结构恢复的系统评价。该方法综合采用场发射扫描电子显微镜(FESEM)和旋转流变仪的黏弹性测试实验探究润滑脂皂纤维结构及其缠结形态变化规律;采用旋转流变仪连续剪切模式下的控制应力实验考察润滑脂胶体分散体系结构强度;借助旋转流变仪振荡模式下的控制应力实验探究润滑脂结构恢复性能。通过对静态热处理后润滑脂样品性能评价的检验,验证了该方法能够较全面反映润滑脂胶体分散体系的性能变化情况。An evaluation method of lubricating grease colloidal dispersion system properties was provided based on rheo- logical behaviors ,which could be systematically evaluated static entanglement, dynamic structural strength and recovery of grease colloidal dispersion system.In this evaluation method, the experiments of field emission scanning electron microscope （FESEM） and rotational rheometer viscoelastic properties were combined to explore the variations of both structure and entanglement of lubricating grease fiber, the controlled-stress test under rotational rheometer continuous shear condition was carried out to study the structural strength of grease colloidal dispersion system, and the controlled-stress test under rota- tional rheometer oscillating shear condition was carried out to investigate the structural recovery.It is found that the evalua- tion method is able to express the variation of grease colloidal dispersion system well by means of the properties evaluation on two grease samples after being heated at different temperature.

关 键 词：流变特性 润滑脂 胶体分散体系 结构性能 评价方法 

分 类 号：TH117.2[机械工程—机械设计及理论]