Page 48 - 《摩擦学学报》2021年第6期

第 41 卷 第 6 期 摩 擦 学 学 报 Vol 41 No 6
2021 年 11 月 Tribology Nov, 2021

DOI: 10.16078/j.tribology.2020255

食品级滑石粉对复合铝基润滑脂

摩擦学性能的影响

1,2*
1,2
2
2
巩龙飞 , 钱善华 , 王 韦 , 倪自丰 , 任海栋 3
(1. 江苏省食品先进制造装备技术重点实验室, 江苏 无锡 214122;
2. 江南大学 机械工程学院, 江苏 无锡 214122;
3. 无锡钡镭新材料技术咨询有限公司, 江苏 无锡 214072)
摘 要: 通过白油和稠化剂制备了复合铝基脂，在MFT-5 000磨损试验机上研究了食品级滑石粉(Food-grade talc, F-
Talc)质量分数对润滑脂摩擦学性能的影响，并采用MFP-D白光干涉仪、电化学工作站及X射线光电子能谱仪
(XPS)表征磨痕表面. 结果表明：通过李斯特菌检测发现所制备的润滑脂具有较好的安全性，另外其锥入度和滴点的
指标良好；F-Talc能够改善复合铝基润滑脂的热稳定性能和摩擦学性能；与基础脂相比，F-Talc的质量分数为1.0%的
润滑脂摩擦系数降低了约25%，磨损体积降低了约47%. 机理分析可知，F-Talc易在摩擦副表面形成润滑膜，且部分
F-Talc能够发挥修补及微抛光的作用，提高润滑脂的抗磨性能.
关键词: 食品级润滑脂; 复合铝基脂; 食品添加剂; 李斯特菌法; 摩擦学性能
中图分类号: TH117.1 文献标志码: A 文章编号: 1004-0595(2021)06–0833–10

Effect of Food-Grade Talc on Tribological Properties of

Composite Aluminum-Based Grease

2
1,2*
2
1,2
GONG Longfei , QIAN Shanhua , WANG Wei , NI Zifeng , REN Haidong 3
(1. Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Jiangsu Wuxi 214122, China
2. School of Mechanical Engineering, Jiangnan University, Jiangsu Wuxi 214122, China
3. Wuxi Beilei New Material Technology Consulting Co Ltd, Jiangsu Wuxi 214072, China)
Abstract: In order to improve the anti-wear performance of as-prepared food-grade grease and enlarge its service life, it
is necessary to adopt new additives and investigate their influence the on the tribological properties of the as-prepared
food-grade greases. In the study, composite aluminum-based grease was prepared by food-grade white mineral oil and
composite aluminum soap thickener. The food-grade talc (F-Talc) was selected as the additive, and its morphology and
structure were characterized by scanning electron microscopy and fourier transform infrared spectrometer. The influence
of F-Talc mass fraction on thermal stability and tribological properties of the as-prepared composite aluminum-based
grease were investigated using Q500 thermogravimetric analyzer and MFT-5 000 wear tester with the ball-disc rubbing
pair, respectively. The wear scar surfaces of the steel disc were characterized by means of MFP-D white light
interferometer, CHI660E electrochemical workstation and 250Xi X-ray photoelectron spectroscopy. Moreover, the
safety performances of the composite aluminum-based grease and F-Talc were evaluated using the Listeria
monocytogenes method. The results showed that as-prepared composite aluminum-based grease and F-Talc additive-

Received 17 November 2020, revised 8 January 2021, accepted 12 January 2021, available online 28 November 2021.
*Corresponding author. E-mail: qianjnwx@126.com, Tel: +86-13665160156.
The project was supported by the National Natural Science Foundation of China (51775244) and Jiangsu Key Laboratory of
Advanced Food Manufacturing Equipment and Technology (FMZ201907).
国家自然科学基金项目(51775244)和江苏省食品先进制造装备技术重点实验室自主研究课题(FMZ201907)资助.