摘要
采用化学还原法制备平均粒径为139 nm的纳米铜悬浮液。通过一种缓冲液与两种非离子表面活性剂复配对纳米铜表面进行改性,研究纳米铜在220~#矿用润滑油中的悬浮稳定性;同时利用MFT-R4000高速往复摩擦磨损试验仪与AW润滑油抗磨试验机研究纳米铜润滑油的摩擦学性能。结果表明:在缓冲液、吐温-80及司盘-80用量分别为纳米铜悬浮液的233%、2%和2%条件下对纳米铜进行改性,所得到的改性纳米铜在220~#润滑油中的质量分数为0.3%时,悬浮稳定性较好;其摩擦系数在5、10和20 N负荷下与原油相比分别降低了67.07%、15.79%和43.40%;其极压与抗磨性能分别提高了20.0%与63.9%以上。
A nano-copper suspension solution with an average particle diameter of about 139 nm was prepared by chemical reduction method.The surface modification of the nano-copper suspension solution using one buffer and a pair of non-ionic surfactants was carried out to study its suspension stability in 220~# mining lubricant oil.And the tribological properties of the nano-copper lubricants were studied by MFT-R4000 high-speed reciprocating friction and wear tester and AW lubricant anti-wear tester.The results show that when the usage of the buffer,Tween-80 and Span-80 are 233%,2% and 2% in the nano-copper suspension solution,respectively,and the amount of nano-copper modified is 0.3% in the lubricating oil,the suspension stability of the nano-copper in 220~# lubricating oil is the best,and the friction coefficient is reduced by 67.07%,15.79% and 43.40% compared with original oil under the load of 5,10 and 20 N,respectively.Meanwhile,the extreme pressure and wear resistance are improved over 20.0% and 63.9%,respectively.
作者
孙引忠
王琼
孟昭
SUN Yinzhong;WANG Qiong;MENG Zhao(State Key Laboratory of Coking Coal Exploitationand Comprehensive Utilization,China Pingmei Shenma Group,Pingdingshan 467099,China;Institute of Energy and Chemical Industry,China Pingmei Shenma Group,Pingdingshan 467099,China;College of Materials Science&Technology,Xi′an University of Science&Technology,Xi′an 710054,China)
出处
《湿法冶金》
CAS
北大核心
2019年第6期505-510,共6页
Hydrometallurgy of China
关键词
纳米铜
220~#润滑油
悬浮稳定性
减摩
极压
抗磨
nano-copper
220~# lubricant oil
suspension stability
anti-friction
extreme pressure
wear resistance
