新型含氮环状硼酸酯在菜籽油中抗磨减摩性能
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摘要
采用先硼化后酯化法合成了一种新型含氮环状硼酸酯润滑油添加剂硼酸二乙醇胺油酸酯(RNB),利用四球摩擦磨损试验机评价了其摩擦学性能。结果表明:在菜籽油中加入3.0%RNB时,其承载能力和抗烧结能力明显提高,PB和PD最大分别可达860N和3 156N,在392N载荷下长磨磨斑直径仅为0.41mm,摩擦系数0.038,初步推断RNB提高菜籽油抗磨减摩机理为RNB中含有C-O-B-N-C五元环,在低载荷时形成增强的有机吸附膜,高载荷时释放游离B和N原子形成FeB、Fe2B、B2O3、BN化合物等无机化学膜,与吸附膜共同作用提高润滑效果。
A new nitrogen-containing cyclic borate lubricating oil additive,diethanolamine borate oleate(RNB)was synthesized by boronization followed by esterification.The tribological properties were evaluated by four ball friction and wear tester.The results show that when 3.0% RNB is added to rapeseed oil,the bearing capacity and anti-sintering capacity of RNB are obviously improved with the value of PB and PDbeing 860 N,3 156 Nrespectly,and the maximum diameter of long grinding spot is only 0.41 mm and the friction coefficient is 0.038 under the loading 392 N.It is preliminarily concluded that mechanism by which RNB improve the anti-wear and anti-friction of rapeseed oil is containing C-O-B-N-C five-membered ring in RNB forming enhanced organic adsorption film under low load,releasing free B and N atoms to form FeB,Fe2 B,B2 O3,BN compounds as inorganic chemical films under high load.
A new nitrogen-containing cyclic borate lubricating oil additive,diethanolamine borate oleate(RNB)was synthesized by boronization followed by esterification.The tribological properties were evaluated by four ball friction and wear tester.The results show that when 3.0% RNB is added to rapeseed oil,the bearing capacity and anti-sintering capacity of RNB are obviously improved with the value of PB and PDbeing 860 N,3 156 Nrespectly,and the maximum diameter of long grinding spot is only 0.41 mm and the friction coefficient is 0.038 under the loading 392 N.It is preliminarily concluded that mechanism by which RNB improve the anti-wear and anti-friction of rapeseed oil is containing C-O-B-N-C five-membered ring in RNB forming enhanced organic adsorption film under low load,releasing free B and N atoms to form FeB,Fe2 B,B2 O3,BN compounds as inorganic chemical films under high load.
引文
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[3]王军,杨敬一,张慧琳,等.空气等离子体聚合蓖麻油的合成及润滑性能研究[J].润滑与密封,2016,49(09):108-102.
[4] ARUMUGAM S,SRIRAM G,ELLEPAN R.Bio-lubricant-biodiesel combination of rapeseed oil An experimental investigation on en gine oil tribology,performance,and emissions of variable compression engine[J].Energy,2014,72:618-627.
[5]景恒,陈立功,程鹏,等.菜籽油酯化制备润滑油基础油的研究[J].能源研究与信息,2004,20(03):179-183.
[6]李凯,王兴国,刘元法.植物油为原料合成润滑油基础油研究现状[J].粮食与油脂,2008,4:3-5.
[7]杨蔚权,陈波水,方建华,等.油酸甲酯型含氮硼酸酯的合成及其抗磨减摩特性[J].石油学报(石油加工),2016,32(1):82-87.
[8] Li J,Li Z,Ren T,et a1.Hydrolytic stability and tribological properties of N-containing heterocyclic borate esters as lubricant additives in rapeseed oil[J].Tribology International,2014,73:101-107.
[9] Li Z,Ren T.Synergistic effects between alkylphosphate-ammonium ionic liquid and alkylphenylborate as lubricant additives in rapeseed oil[J].Tribology International,2017,109:373-381.
[10] LI J,XU X,WANG Y,et a1.Tribological studies on a novel borate ester containing benzothiazol-2-yl and disulfide groups as multifunc tional additive[J].Tribology International,2010,43(5/6):1048-1053.
[11]陈立新,李建昌,吴华,等.一种高水解稳定性有机B-N剂的摩擦学特性与机制研究[J].润滑与密封,2015,40(7):6-8.
[12] JIN K,ZENG X,EMILE V,et a1.The tribological performance and tribochemical analysis of novel borate esters as lubricant additives in rapeseed oil[J].Tribology International,2014,71:149-157.
[13] ZHONG Z,BELLO I,LEI M,et a1.Synthesis and characterization of boron carbon nitride film s by radio frequency m agnetron sputte ring[J].Surf Coat T echnol,2000,128/129(3):334-340.
[14] CARETTI I,JIMENEZ I,ALBELL J.BCN films with controlled composition obtained by the interaction between molecular beams of B and C with nitrogen ion beams[J].Diamond and Related Materials,2003,12:1079-1083.
[15]胡晓兰,郝红,梁国正.新型硼酸酯类偶联剂的合成与表征[J].西北工业大学学报,2003,21(3):364-367.
[16] IMDH K,BYON E,LEE S,et a1.Characterization of ternary boron carbon nitride films synthesized by R F magnetron sputtering[J].Thin Solid Films,2004,447/448(3):192-196.
[17] YAO J,DONG J,XIONG R.Anti-wear synergism of borate esters and copper oleate[J].Lubracation Engineering,1993,(5):5-14.
[18] HUANG W.Reaserch of structure and performance on water-solubility of lubricant additives[D].Chong qing,Logistical Engineering University,2000.