油溶性硼酸镧纳米微粒的制备及其在不同基础油中的摩擦学性能研究
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摘要
采用表面修饰技术和沉淀法制备油胺修饰的硼酸镧(OAm-LaBO_3)纳米微粒,采用多种仪器设备分析OAm-LaF_3纳米微粒的结构、形貌及化学组成,评价OAm-LaBO_3纳米微粒在矿物油液体石蜡(LP)和合成酯类油癸二酸二异辛酯(DIOS)基础油中的减摩抗磨性能,推测其在LP和DIOS中的摩擦学作用机制。结果表明:OAm-LaBO_3在LP和DIOS基础油中均具有一定的减摩、抗磨性能,其中在LP中减摩性能显著,而在DIOS中抗磨性能突出。主要原因是LP和DIOS的极性不同,OAm-LaBO_3纳米微粒在摩擦过程中分解的有机小分子在摩擦表面吸附的难易程度不同,造成了减摩抗磨机制不同。
The borate lanthanum modified by oleylamine(OAm-LaBO_3) was prepared by surface modification technology and direct precipitation method.The morphology,structure and chemical composition of OAm-LaBO_3 nanoparticles were characterized by various instruments and equipment.The tribological properties of OAm-LaBO_3were evaluated in mineral oil of liquid paraffin(LP) and synthetic ester oil of diisooctyl sebacate(DIOS),and the tribological effect and mechanism of the OAm-LaBO_3nanoparticles were suggested.Results show that the synthesized borate lanthanum has certain friction reducing and anti-wear properties in both LP and DIOS based oils.The friction reducing of OAm-LaBO_3in LP is significant,while the anti-wear property of OAm-LaBO_3 in DIOS is prominent.The main reason is that the polarities of LP and DIOS are different,and the adsorption of small organic molecules decomposed by OAm-LaBO_3 on the friction surface during the friction process is different,resulting in a different mechanism of friction reduction and anti-wear.
The borate lanthanum modified by oleylamine(OAm-LaBO_3) was prepared by surface modification technology and direct precipitation method.The morphology,structure and chemical composition of OAm-LaBO_3 nanoparticles were characterized by various instruments and equipment.The tribological properties of OAm-LaBO_3were evaluated in mineral oil of liquid paraffin(LP) and synthetic ester oil of diisooctyl sebacate(DIOS),and the tribological effect and mechanism of the OAm-LaBO_3nanoparticles were suggested.Results show that the synthesized borate lanthanum has certain friction reducing and anti-wear properties in both LP and DIOS based oils.The friction reducing of OAm-LaBO_3in LP is significant,while the anti-wear property of OAm-LaBO_3 in DIOS is prominent.The main reason is that the polarities of LP and DIOS are different,and the adsorption of small organic molecules decomposed by OAm-LaBO_3 on the friction surface during the friction process is different,resulting in a different mechanism of friction reduction and anti-wear.
引文
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[2]柳学全,方建锋,李红云,等.一种含硼润滑油添加剂的制备及摩擦学性能研究[J].润滑与密封,2005,30(4):132-134.LIU X Q,FANG J F,LI H Y,et al.Preparation of a lubrication oil additive containing boron and study on its tribological properties[J].Lubrication Engineering,2005,30(4):132-134.
[3]胡泽善,王立光,陈国需,等.十二烷氧基硼酸锌的合成及其抗磨减摩性能研究[J].摩擦学学报,2000,20(2):150-152.HU Z S,WANG L G,CHEN G X,et al.Synthesis and tribological properties of zinc dodecoxyborate as antiwear and friction reducing additive of lubricating oil[J].Tribology,2000,20(2):150-152.
[4]DONG J X,HU Z S.A study of the anti-wear and friction-reducing properties of the lubricant additive,nanometer zinc borate[J].Tribological International,1998,31(5):219-223.
[5]GU K C,CHEN B S,WANG X M,et al.Preparation,friction and wear properties of hydrophobic lanthanum borate nanorods in rapeseed oil[J].Transactions of Nonferrous Metals Societ of China,2014,24:3578-3584.
[6]JIA Z F,XIA Y Q.Hydrothermal synthesis,characterization,and tribological behavior of oleic acid-capped lanthanum borate with different morphologies[J].Tribology Letters,2011,41(2):425-434.
[7]纪献兵,陈银霞.纳米硼酸钙的水热法制备及摩擦学性能研究[J].润滑与密封,2015,40(7):75-77.JI X B,CHEN Y X.Hydrothermal synthesis and tribological properties study of nano-calcium borate[J].Lubrication Engineering,2015,40(7):75-77.
[8]李鹏,张东恒,程亮,等.纳米硼酸锌添加剂的合成及其抗磨性能的研究[J].润滑油,2014,29(2):23-26.LI P,ZHANG D H,CHENG L,et al.Synthesis of nano zinc borate additive and investigation on its anti-wear property[J].Lubricating Oil,2014,29(2):23-26.
[9]郝利峰,李久盛,徐小红,等.表面修饰的纳米硼酸镁的制备及其摩擦学研究[J].无机材料学报,2010,25(12):1330-1334.HAO L F,LI J S,XU X H,et al.Preparation and tribological properties of surface-modified borate magnesium nanoparticels[J].Journal of Inorganic Materials,2010,25(12):1330-1334.
[10]陈荣,李屹,周元康,等.表面修饰氟化镧纳米粒子的制备及摩擦学性能研究[J].润滑与密封,2011,36(12):50-54.CHEN R,LI Y,ZHOU Y K,et al.Study on preparation of surface modified LaF3nanoparticles and its tribological properties[J].Lubrication Engineering,2011,36(12):50-54.
[11]陈波水,董浚修,叶毅,等.稀土元素的摩擦催渗作用及宏观催渗机制[J].材料研究学报,1996,10(6):613-616.CHEN B S,DONG J X,YE Y,et al.Tribo-permeation catalyzation of rare earth elements and macro-mechanisms[J].Chinese Journal of Materials Research,1996,10(6):613-616.
[12]李芬芳,梁逸增,黄伟九,等.十二烷氧基硼酸镧抗磨减摩添加剂的合成及摩擦学性能研究[J].润滑与密封,2005,30(1):52-54.LI F F,LIANG Y Z,HUANG W J,et al.Synthesis and tribological properties of lanthanum dodecoxylborate as antiwear and friction-reducing additive[J].Lubrication Engineering,2005,30(1):52-54.
[13]朱驰,王玥,周元康,等.表面修饰硼酸镧纳米粒子的制备及摩擦学性能[J].润滑与密封,2012,37(12):56-60.ZHU C,WANG Y,ZHOU Y K,et al.Preparation and tribological properties of surface modified lanthanum borate nanoparticles[J].Lubrication Engineering,2012,37(12):56-60.
[14]CHEN B S,GU K C,FANG J H,et al.Tribological characteristics of monodispersed cerium borate nanospheres in biodegradable rapeseed oil lubricant[J].Applied Surface Science,2015,353:326-332.
[15]刘维民,许俊,冯大鹏,等.合成润滑油的研究现状及发展趋势[J].摩擦学学报,2013,33(1):91-104.LIU W M,XU J,FENG D P,et al.The research status and prospect of synthetic lubricating oils[J].Tribology,2013,33(1):91-104.
[16]YANG G B,ZHAO J H,CUI L,et al.Tribological characteristic and mechanism analysis of borate ester as a lubricant additive in different base oils[J].RSC Advances,2017,7:7944-7953.
[17]李久盛,郝利峰,徐小红,等.表面修饰纳米硼酸钙的制备及摩擦学性能[J].中国表面工程,2010,23(3):29-32.LI J S,HAO L F,XU X H,et al.Preparation and tribological properties of surface modified calcium borate nanoparticles[J].China Surface Engineering,2010,23(3):29-32.
[18]YANG G B,ZHANG Z M,ZHANG S M,et al.Preparation and characterization of copper nanoparticles surface-capped by alkanethiols[J].Surface and Interface Analysis,2013,45:1695-1701.
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