摘要
采用氧化腐蚀性评定试验考察了润滑油配方体系中含硫添加剂对润滑油铜腐蚀性能的影响。含硫添加剂包括磺酸盐、ZDDP和硫化烷基酚钙,从硫化烷基酚钙的化学结构和生产工艺两方面探讨了铜腐蚀机理。结果表明:影响润滑油铜腐蚀性能的主要因素是添加剂硫化烷基酚钙中含有的活性硫;活性硫主要来源于硫化烷基酚钙分子中的长链硫桥(Sx,x≥4)均裂产生的硫自由基,以及硫化烷基酚钙制备工艺过程中残留的未反应的活性硫。
The effect of various additives, such as sulfonate, ZDDP, sulfurized calcium alkylphenate in formulated lubricant on copper corrosion was evaluated by corrosive bench test （CBT）. The corrosion mechanism was also discussed from two aspects of the chemical structure of the additives and their manufacturing processes. It is found that active sulfur amount from homolytic fission of long chain S bridge （Sx, x≥4） and unreacted S element remained in the manufacturing process is the main factor for the Cu corrosion, especially in sulfurized calcium alkylphenates and that there are obvious differences in the structure of the sulfur bridge and the form of the molecule groups in the molecules between sulfurized calcium alkylphenates from different sources.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2013年第4期70-74,共5页
Petroleum Processing and Petrochemicals
关键词
含硫添加剂
铜腐蚀
活性硫
硫桥
S-containing additives
Cu corrosion
active sulfur
sulfur bridge
