Chemically Modified Silicone Oil with Enhanced Tribological and Anti-Foaming Properties

Luan, Xiaosheng; Zhang, Enhui; Chen, Yunlong; Ma, Rui; Gong, Kuiliang; Li, Weimin; Wang, Xiaobo

doi:10.3390/lubricants10120364

Open AccessArticle

Chemically Modified Silicone Oil with Enhanced Tribological and Anti-Foaming Properties

by

Xiaosheng Luan

^1,2,

Enhui Zhang

^2,3,

Yunlong Chen

^2,3,

Rui Ma

^2,3,

Kuiliang Gong

^1,2,

Weimin Li

^1,2,3,* and

Xiaobo Wang

^1,2,3

¹

Zibo Innovation Center of High-End Synthetic Lubricating Materials, Zibo 255000, China

²

State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China

³

Qingdao Center of Resource Chemistry and New Materials, Qingdao 266000, China

^*

Author to whom correspondence should be addressed.

Lubricants 2022, 10(12), 364; https://doi.org/10.3390/lubricants10120364

Submission received: 24 November 2022 / Revised: 9 December 2022 / Accepted: 13 December 2022 / Published: 15 December 2022

(This article belongs to the Special Issue Advances in Novel Lubricant Additives)

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Abstract

Two kinds of chemically modified silicone oil, diisooctyl phosphate-terminated silicone oil (UCP204) and dioctyl dithiophosphate-terminated silicone oil (UCT2003), were synthesized. The tribological properties of silicone oil were evaluated using an SRV tribometer, and the worn surface and chemical composition were examined by scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS). The friction coefficients of UCP204 and UCT2003 were reduced by approximately 62.7% and 56.7% compared with untreated silicone oil. The results indicated that the incorporation of phosphorus and/or sulfur could significantly enhance the tribological performance of modified silicone oil. Benefiting from their unique chemical structure, chemically modified silicone fluids also exhibit good dispersion stability and excellent anti-foaming properties, which are mainly attributed to the low surface tension properties imparted by the silicone backbone and the better dispersion stability provided by the dialkyl dithiophosphate group in chemically modified silicone fluids. It is also found that lubricants containing modified silicone oil remain clear after three months of storage and still maintain good anti-foaming properties.

Keywords: silicone oil; chemical modification; tribological properties; anti-foaming; multifunctional

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MDPI and ACS Style

Luan, X.; Zhang, E.; Chen, Y.; Ma, R.; Gong, K.; Li, W.; Wang, X. Chemically Modified Silicone Oil with Enhanced Tribological and Anti-Foaming Properties. Lubricants 2022, 10, 364. https://doi.org/10.3390/lubricants10120364

AMA Style

Luan X, Zhang E, Chen Y, Ma R, Gong K, Li W, Wang X. Chemically Modified Silicone Oil with Enhanced Tribological and Anti-Foaming Properties. Lubricants. 2022; 10(12):364. https://doi.org/10.3390/lubricants10120364

Chicago/Turabian Style

Luan, Xiaosheng, Enhui Zhang, Yunlong Chen, Rui Ma, Kuiliang Gong, Weimin Li, and Xiaobo Wang. 2022. "Chemically Modified Silicone Oil with Enhanced Tribological and Anti-Foaming Properties" Lubricants 10, no. 12: 364. https://doi.org/10.3390/lubricants10120364

APA Style

Luan, X., Zhang, E., Chen, Y., Ma, R., Gong, K., Li, W., & Wang, X. (2022). Chemically Modified Silicone Oil with Enhanced Tribological and Anti-Foaming Properties. Lubricants, 10(12), 364. https://doi.org/10.3390/lubricants10120364

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Chemically Modified Silicone Oil with Enhanced Tribological and Anti-Foaming Properties

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