多己基萘/聚α-烯烃锂基润滑脂的流变学和摩擦学性能  

Rheological and tribological properties of poly-hexylnaphthalene/poly-α-olefin lithium grease

作　　者：赵志萍 陈晨 汤琼 徐红 刘雷 董晋湘 ZHAO Zhiping;CHEN Chen;TANG Qiong;XU Hong;LIU Lei;DONG Jinxiang(Shanxi Key Laboratory of Chemical Product Engineering,College of Chemical Engineering and Technology,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China)

机构地区：[1]太原理工大学化学工程与技术学院,化学产品工程山西省重点实验室,山西太原030024

出　　处：《化工学报》2023年第6期2555-2564,共10页CIESC Journal

基　　金：国家自然科学基金项目(U1910202,21978194);山西省重点研发计划项目(202102090301005);山西省青年基金项目(202103021223064)。

摘　　要：离子液体(Et_(3)NHCl-AlCl_(3))催化1-己烯和萘合成了多己基萘基础油,以聚α-烯烃(PAO8)基础油制备的锂基润滑脂作为参照,通过调节基础油中多己基萘与PAO8的复配比(10∶90、20∶80、30∶70和40∶60)制备了不同皂分含量的锂基润滑脂。对不同润滑脂样品的理化性能进行测试表征,利用流变仪和SRV-V摩擦磨损试验机系统地评价了加入的多己基萘对锂基润滑脂的流变学和摩擦学性能的影响,并借助3D白光干涉仪对钢盘磨损表面进行了分析。实验结果表明:基础油中多己基萘与PAO8复配质量比为20∶80时具有良好的协同效应,添加多己基萘可以显著提高PAO8基础油的稠化能力,节约稠化剂的用量,同时在较高温度(85℃)的工况下,多己基萘可以提高PAO8锂基润滑脂的流变和摩擦学性能。Poly-hexylnaphthalene base oil was synthesized with 1-hexene and naphthalene catalyzed by ionic liquid(Et_(3)NHCl-AlCl_(3)).Lithium grease prepared by poly-α-olefin(PAO8)base oil was used as reference.Lithium grease with different soap contents was prepared by adjusting the complex ratio of poly-hexylnaphthalene and PAO8 in the base oil(10∶90,20∶80,30∶70 and 40∶60).The physicochemical properties of different grease samples were tested and characterized.Meanwhile,the rheometer and SRV-V friction and wear tester were used to systematically evaluate the effects of poly-hexylnaphthalene added on the rheological and tribological properties of lithium grease.And with the help of 3D white light interference analyzer,the worn surface of the steel disc was analyzed.The experimental results show that the combination of poly-hexylnaphthalene and PAO8 had excellent synergistic effect at the mass ratio of 20∶80.The addition of poly-hexylnaphthalene can significantly improve the thickening ability of PAO8 base oil and save the amount of thickener.At the same time,poly-hexylnaphthalene can improve the rheological and tribological properties of PAO8 lithium grease under the condition of higher temperature(85℃).

关 键 词：多己基萘 基础油 锂基润滑脂 流变性能 摩擦学性能 

分 类 号：TH117[机械工程—机械设计及理论]