基于9,10-二羟基硬脂酸的锂基润滑脂制备及流变学性能研究
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摘要
采用自制9,10-二羟基硬脂酸作为稠化剂制备了锂基润滑脂,与12-羟基硬脂酸锂制备的传统锂基润滑脂进行了流变学性能对比,并从分子结构角度对两者的性能差异进行了分析。结果表明:与传统锂基润滑脂相比,9,10-二羟基硬脂酸制备的锂基润滑脂受外力剪切时更容易发生形态转变和流动,但受剪切后结构恢复能力更强。
The lithium based grease was prepared by the homemade 9,10-two hydroxy stearic acid as a thickener. The rheological properties of the traditional lithium based grease made from 12-hydroxy stearate were compared,and the performance differences were analyzed from the molecular structure angle. The results show that the lithium base grease,prepared by 9,10-two hydroxy stearic acid,is more likely to undergo morphological change and flow when compared with the traditional lithium base grease,but it is more resilience after shearing.
The lithium based grease was prepared by the homemade 9,10-two hydroxy stearic acid as a thickener. The rheological properties of the traditional lithium based grease made from 12-hydroxy stearate were compared,and the performance differences were analyzed from the molecular structure angle. The results show that the lithium base grease,prepared by 9,10-two hydroxy stearic acid,is more likely to undergo morphological change and flow when compared with the traditional lithium base grease,but it is more resilience after shearing.
引文
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[2] HUNGERFORD,ZOE. Controlling viscosity in methyl oleate derivatives through functional group design[J].Journal of Chemistry,2014,38(12):5777-5785.
[3] CURTIS J,LIU G,OMONOV T,et al. Polyol synthesis from fatty acids and oils:U. S. Patent Application 13/811,362[P]. 2011-07-21.
[4] AHN B J K,KRAFT S,SUN X S. Chemical pathways of epoxidized and hydroxylated fatty acid methyl esters and triglycerides with phosphoric acid[J]. Journal of Materials Chemistry,2011,21(26):9498-9505.
[5]朱雷,陈坤雄. CO2环境下油酸聚合制二聚酸的工艺[J].化工进展,2013,32(9):2216-2220.
[6]赵晓,方云. 9-10-12-13-四羟基硬脂酸钠在低温硬质水及中性p H条件下的特异性能[J].精细化工,2013,30(9):1004-1008.
[7]赵晓.油脂基多羟基硬脂酸的合成与性能研究[D].无锡:江南大学,2013.
[8] KYOUNG-ROK KIM,DEOK-KUN OH. Production of hydroxy fatty acids by microbial fatty acid-hydroxylation enzymes[J]. Biotechnology Advances,2013,31:1473-1485.
[9] MASATAKE KAWASHIMA,LI Huanzhen. Development and application of hydroxy fatty acids[J]. Detergent&Cosmetics,1992(4):27-30.
[10] OKABLE H,MINAMI I,KITAMURA N,et al. 2-Hydroxycarboxylic acids as novel friction-polymer type additives[J]. Proceedings of the Japan International Tribology Conference,Nagoya,1990:1049-1054.
[11]胡志孟.羟基植物油脂肪酸的抗磨规律[J].润滑与密封,2001(4):36-37.
[12]胡志孟.二羟基廿二酸的抗磨作用机理[J].润滑与密封,2002(1):38-41.
[13]胡志孟,黄黔.用经典力学和量子力学研究羟基植物油脂肪酸的抗磨规律[J].应用力学学报,2003,20(2):1-5.
[14]张信刚,王大璞,杨生荣.二羟基脂肪酸的极压抗磨性能研究[J].摩擦学学报,1998,18(2):175-178.
[15]张信刚,乌学东,王大璞,等.羟基脂肪酸在酯类油中的极压、抗磨性能[J].上海交通大学学报,1999,33(10):1237-1239.
[16]杨汉民,向晖,陈国需.双羟基硬脂酸在蓖麻油中的润滑性能的研究[J].润滑与密封,2005(4):27-28.
[17]姚力丹,杨海宁,孙宏伟,等. 2014年中国及全球润滑脂生产状况分析[C]//全国第十八届润滑脂技术交流会议论文集. 2015:9-19.
[18]周维贵,郭小川,林璐,等.基础油对锂基润滑脂流变性的影响[J].润滑与密封,2016,41(9):88-92.
[19]郭阳,胡萍,骆旎,等.基础油复配复合锂基脂的制备及性能研究[J].润滑与密封,2016,41(9):32-36.
[20]李继泰,胡永明,殷恒波,等.含硅油复合锂基润滑脂的制备及性能研究[J].润滑与密封,2016(9):74-79.
[21]朱廷彬.润滑脂技术大全[M].北京:中国石化出版社,2015.
[22]何懿峰,孙洪伟,段庆华.润滑脂合成机理探索[J].石油学报(石油加工),2009,25(s1):98-102.
[23]刘万杰,郭小川,蒋明俊,等.两个羟基硬脂酸的合成及其对锂基润滑脂性能影响研究[J].化学研究与应用,2017,29(3):396-400.
[24]罗曼,关平,刘文汇.利用红外光谱鉴别饱和脂肪酸及其盐[J].光谱学与光谱分析,2007,27(2):250-253.