| WANG Wei,QIAN Shan-hua,GONG Long-fei,REN Hai-dong,TANG Lei.Investigation into the Influence of PTFE for the Food Equipment on the Tribological Property of the Aluminum Complex Grease[J],50(6):229-235, 316 |
| Investigation into the Influence of PTFE for the Food Equipment on the Tribological Property of the Aluminum Complex Grease |
| Received:August 13, 2020 Revised:September 17, 2020 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2021.06.025 |
| KeyWord:food grade aluminum complex grease polytetrafluoroethylene wear volume Raman spectroscopy |
| Author | Institution |
| WANG Wei |
Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Wuxi , China;School of Mechanical Engineering, Jiangnan University, Wuxi , China |
| QIAN Shan-hua |
Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Wuxi , China;School of Mechanical Engineering, Jiangnan University, Wuxi , China |
| GONG Long-fei |
School of Mechanical Engineering, Jiangnan University, Wuxi , China |
| REN Hai-dong |
Jiangsu Aorun Advanced Materials Co., Ltd, Nanjing , China |
| TANG Lei |
Jiangsu Aorun Advanced Materials Co., Ltd, Nanjing , China |
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| Abstract: |
| This work aims to improve the friction and wear resistance of aluminum complex grease. Food safety damages are reduced afterwards by replacing ordinary greases with food grade ones. Aluminum complex grease was prepared by white oil and certain thickener. The temperature dependence of viscosity and quality of white oil and aluminum complex grease were investigated by DHR-2 rheometer and Q500TGA thermogravimetric analyzer, respectively. Tribological properties of mixed aluminum grease containing PTFE with various mass fractions are assessed by MFT-5000 rub tester. The results show that the drop point of the aluminum complex grease was around 220 ℃, and the cone penetration and its thermal decomposition temperature was 230 (0.1 mm) and 245 ℃, respectively. With the increase of the PTFE mass percent, friction coefficient of the mixed grease and wear volume of disk firstly decreased and then increased. When the mass fraction of PTFE reached 5%, the average coefficient of friction and wear volume were reduced by 27.9% and 53.4%, and the performance is better than those PURITY FG2 food grade aluminium complex grease in the market. As a conclusion, the aluminum complex grease possesses good physical and chemical properties, and PTFE can significantly improve its friction and wear resistance. Mixed grease containing 5% PTFE is most likely to be used in the field of food equipment, and this research will provide references for the development of new food lubricating materials. |
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