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Biodegradability and Tribological Properties of Mineral Base Oil Enhanced by Caprylic Methyl Diethanolamine Phosphate Ester

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【作者】 Ding Jianhua； Fang Jianhua； Chen Boshui； Liu Ping； Fan Xingyu； Chen Ran；

【Author】 Ding Jianhua;Fang Jianhua;Chen Boshui;Liu Ping;Fan Xingyu;Chen Ran;Department of Oil, Army Logistics University;Military Representative Office in PetroChina Dalian Petrochemical Company;

【通讯作者】 Fang Jianhua;

【机构】 Department of Oil, Army Logistics University； Military Representative Office in PetroChina Dalian Petrochemical Company；

【摘要】 The influence of synthetic caprylic methyl diethanolamine phosphate ester(abbreviated as MDEACP)on biodegradability and tribological properties of 400 SN mineral base oil was studied.The biodegradability of the neat base oil and the oil doped with MDEACP was determined on a biodegradation tester.The tribological properties of the neat base oil and the oil doped with MDEACP were evaluated on a four-ball tester.Moreover,the worn surfaces were investigated by scanning electron microscopy(SEM)and X-ray photoelectron spectroscopy(XPS).The results revealed that MDEACP significantly promoted the biodegradation of the mineral base oil.The improvement in biodegradability was attributed to the enhanced growth and quantity of microbes by MDEACP.Furthermore,MDEACP enhanced the anti-wear properties,the friction-reducing properties,and the extreme pressure properties of the base oil.It was mainly attributed to the formation of the complex boundary lubrication film resulted from the adsorption and tribochemical reactions of MDEACP on the friction surface.

【Abstract】 The influence of synthetic caprylic methyl diethanolamine phosphate ester(abbreviated as MDEACP)on biodegradability and tribological properties of 400 SN mineral base oil was studied.The biodegradability of the neat base oil and the oil doped with MDEACP was determined on a biodegradation tester.The tribological properties of the neat base oil and the oil doped with MDEACP were evaluated on a four-ball tester.Moreover,the worn surfaces were investigated by scanning electron microscopy(SEM)and X-ray photoelectron spectroscopy(XPS).The results revealed that MDEACP significantly promoted the biodegradation of the mineral base oil.The improvement in biodegradability was attributed to the enhanced growth and quantity of microbes by MDEACP.Furthermore,MDEACP enhanced the anti-wear properties,the friction-reducing properties,and the extreme pressure properties of the base oil.It was mainly attributed to the formation of the complex boundary lubrication film resulted from the adsorption and tribochemical reactions of MDEACP on the friction surface.

【关键词】 additive； biodegradability； friction； wear； extreme pressure properties；
【Key words】 additive； biodegradability； friction； wear； extreme pressure properties；
【基金】 financial support from the National Defense Science Technology Foundation (Project No.3604003);the National Natural Science Foundation of China (Project No.51375491);the Natural Science Foundation of Chongqing (Project No. CSTC, 2014JCYJAA50021);the Postgraduate Research and the Innovation Project of Chongqing (No. CYB 18128);the Natural Science Foundation of Chongqing (Project No. CSTC, 2017JCYJAX0058)
  • 【文献出处】 China Petroleum Processing & Petrochemical Technology ,中国炼油与石油化工(英文版) , 编辑部邮箱 ,2019年02期
  • 【分类号】TH117.22
  • 【被引频次】1
  • 【下载频次】10
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