Modification of POSS and their tribological properties and resistant to space atomic oxygen irradiation as lubricant additive of multialkylated cyclopentanes

• Published in: Friction Vol. 12; no. 5; pp. 884 - 896
• Main Authors: Wang, Xingwei, Zhang, Chaoyang, Zhao, Chen, Liang, Yijing, Zhang, Ming, Yang, Wufang, Yu, Bo, Yu, Qiangliang, Cai, Meirong, Zhou, Feng, Liu, Weimin
• Format: Journal Article
• Language: English
• Published: Beijing Tsinghua University Press 01.05.2024; Springer Nature B.V; Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing,Yantai 264000,China%Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing,Yantai 264000,China%State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China; State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China
• Subjects: additive; Aerospace environments; anti-wear; Atomic oxygen; Chemical reactions; Chemical synthesis; Corrosion and Coatings; Engineering; Friction reduction; Irradiation; Lubricants; Lubricants & lubrication; Mechanical Engineering; Mechanical properties; multialkylated cyclopentanes (MACs); Nanotechnology; Oil additives; Physical Chemistry; Polyhedral oligomeric silsesquioxane; POSS; reduce-friction; Research Article; resistant atomic irradiation; Silicon compounds; Sulfur compounds; Surfaces and Interfaces; Thin Films; Tribology; POSS; reduce-friction; anti-wear; resistant atomic irradiation; multialkylated cyclopentanes (MACs); additive; multialkylated cyclopentanes(MACs); polyhedral oligomere silsesquioxane(POSS)
• DOI: 10.1007/s40544-023-0798-7
• ISSN: 2223-7690

Developing functional additive resistant to space atomic oxygen (AO) irradiation through simple molecular design and chemical synthesis to enhance the lubricating performance of multialkylated cyclopentanes (MACs) oil is a significant challenge. Herein, sulfur-containing polyhedral oligomere silsesquioxane (POSS) were synthesize via a click-chemistry reaction of octavinyl polyhedral oligomeric with alkyl sulfide. The reduce-friction (RF), anti-wear (AW) properties and anti-AO irradiation of POSS-S-R as MACs base oil additives in atmospheric and simulated space environments were systematically investigated for the first time. Results demonstrate that POSS-S-R not only possesses outstanding anti-AO irradiation capacity but also effectively improves the RF and AW of MACs in atmospheric or simulated space surroundings. This improvement is due to the excellent anti-AO irradiation properties of the POSS structure itself and the high load-carrying ability of silicon-containing and sulfur-containing compounds generated by tribo-chemical reactions, which effectively separates the direct contact of the friction interface. We believe that this synthesized POSS-S-R is a promising additive for space lubricants.