潤滑油中抗氧化劑之協同作用及其應用

The Synergism and its Application of Antioxidants in Lubricants

蘇酉申(Yu-Shen Su) ； 龔哲民(Che-Min Kung) ； 盧高賢(Kao-Hsien Lu) ； 許宏彰(Hun-Chang Sheu) ； 王淑麗(Shu-Li Wang)

《石油季刊》 57卷2期 (2021/06) Pp. 69-80

摘要

抗氧化劑依其作用機制可分為將自由基清除的主要抗氧化劑以及可將過氧化物還原為醇類的輔助抗氧化劑。在實際應用上，為了兼顧經濟性與環保，現代的潤滑油中常將可發揮協同作用的抗氧化劑併用。本文介紹了抗氧化劑的三種協同作用，包括同相協同作用、異相協同作用以及自動協同作用，並且介紹抗氧化劑應用於基礎油與潤滑油中的表現，高溫時胺類抗氧化劑之效果優於阻位酚類抗氧化劑，而兩者併用時即使總劑量未增加，仍可有最佳之抗氧化效果，為協同作用之應用實例。

關鍵字

主要抗氧化劑 ； 輔助抗氧化劑 ； 協同作用 ； 基礎油

並列摘要

The mechanisms of antioxidant can be divided into the scavenging of free radicals by primary antioxidant and the reduction of hydroperoxides to alcohols by secondary antioxidant. In practical applications, the combined use of antioxidants with synergistic effects are prevailing in modern lubricants for economic benefits and environmental protection. In the paper, three types of antioxidant synergism including homosynergism, heterosynergism, and autosynergism are introduced as well as the performance of antioxidants in base oils and lubricants. At higher temperature, the amine antioxidant performs better than hindered phenol. However, the best antioxidant performance comes out with the combination of both even if the total dosage keeps the same, which is an application example of synergism.

並列關鍵字

Primary Antioxidant ； Secondary Antioxidant ； Synergism ； Base Oil