Tribological performance of hexagonal boron nitride supported ionic liquid lubricant additives

doi:10.11949/0438-1157.20200386

CIESC Journal ›› 2020, Vol. 71 ›› Issue (9): 4303-4313.DOI: 10.11949/0438-1157.20200386

• Material science and engineering, nanotechnology • Previous Articles Next Articles

Tribological performance of hexagonal boron nitride supported ionic liquid lubricant additives

Zhongyi HE¹(),Guangyue JIA^1,²,Mengmeng ZHANG^1,²,Jincan YAN^2,³(),Liping XIONG¹,Hongbing JI^2,^4,⁵()

^1.College of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China
^2.Huizhou Research Institute, Sun Yat-sen University, Huizhou 516081, Guangdong, China
^3.School of Chemistry and Material Engineering, Huizhou University, Huizhou 516007, Guangdong, China
^4.Fine Chemical Industry Research Institute, the Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, Guangdong, China
^5.School of Chemical Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, Guangdong, China

Received:2020-04-13 Revised:2020-06-24 Online:2020-09-05 Published:2020-09-05
Contact: Jincan YAN,Hongbing JI

纳米六方氮化硼负载离子液体润滑添加剂的摩擦学特性

何忠义¹(),贾广跃^1,²,张萌萌^1,²,晏金灿^2,³(),熊丽萍¹,纪红兵^2,^4,⁵()

^1.华东交通大学材料科学与工程学院, 江西南昌 330013
^2.中山大学惠州研究院，广东惠州 516081
^3.惠州学院化学与材料工程学院，广东惠州 516007
^4.中山大学化学学院, 精细化工研究院，广东省低碳化学与过程节能重点实验室，广东广州 510275
^5.广东石油化工学院化学工程学院，广东茂名 525000

通讯作者: 晏金灿,纪红兵
作者简介:何忠义(1971—)，男，博士，教授，hzy220567@163.com
基金资助:
国家自然科学基金项目(51965020);广东省自然科学基金项目(2020A1515011102);惠州市天鹅计划领军人才项目(20151113012123406);惠州市2017重大专项(2016X0108008)

Abstract

Abstract:

A lubricating additive of ultrasonically exfoliated hexagonal boron nitride supported imidazole oleic acid ionic liquid (OL-IL/h-BN) was prepared, and the structure and morphology were characterized by SEM, TEM, FTIR, TG and XRD. The dispersion performance in polyethylene glycol 400 was tested by using Zeta potential test, and it was found that the dispersion stability was greatly improved. The tribological properties were tested using a four-ball machine, and the results showed that the friction-reducing and anti-wear properties were better than h-BN. The surface morphology and composition of the wear scars were analyzed by SEM and XPS. The XPS analysis results showed that the surface film contained chemical adsorption films and chemical reaction films such as Fe₂O₃ and B₂O₃. The formation of these films played an important role in reducing friction and wear resistance.

Key words: ionic liquid, hexagonal boron nitride, lubricant, adsorption, antiwear and friction-reducing, dispersion

摘要：

制备了超声剥离的六方氮化硼负载油酸咪唑离子液体(OL-IL/h-BN)润滑添加剂，利用SEM、TEM、FTIR、TG及XRD等对其结构和形貌进行了表征。利用Zeta电位测试方法表征了其在聚乙二醇400中的分散性能，结果发现分散稳定性得到大幅提升。利用四球摩擦磨损试验机测试了摩擦学性能，结果显示减摩抗磨性能都优于h-BN。利用SEM和XPS对其磨斑表面形貌和成分进行了分析，XPS分析结果显示表面膜中含有化学吸附膜以及Fe₂O₃和B₂O₃等化学反应膜，这些膜的形成对减摩抗磨性能起到至关重要的作用。

关键词: 离子液体, 六方氮化硼, 润滑添加剂, 吸附, 抗磨减摩, 分散

CLC Number:

O 647.32

Zhongyi HE, Guangyue JIA, Mengmeng ZHANG, Jincan YAN, Liping XIONG, Hongbing JI. Tribological performance of hexagonal boron nitride supported ionic liquid lubricant additives[J]. CIESC Journal, 2020, 71(9): 4303-4313.

何忠义, 贾广跃, 张萌萌, 晏金灿, 熊丽萍, 纪红兵. 纳米六方氮化硼负载离子液体润滑添加剂的摩擦学特性[J]. 化工学报, 2020, 71(9): 4303-4313.

Figures/Tables 11

Fig.1 The schematic illustration of the synthesis of OL-IL

Fig.2 The schematic illustration of the synthesis of OL-IL/h-BN

Fig.3 SEM images of h-BN (a), h-BN after exfoliation (b) and OL-IL/h-BN (c)

Fig.4 TEM images of OL-IL/h-BN

Fig.5 FTIR spectra(a) and TG curves (b) of h-BN,OL-IL, OL-IL/h-BN; XRD patterns of h-BN, OL-IL/h-BN(c)

Fig.6 The dispersion of 0.5%(mass) h-BN(left) and 0.5%(mass) OL-IL/h-BN(right) in PEG400

Fig.7 Friction coefficient and wear spot diameter of PEG400 and 0.5%(mass)h-BN, 0.5%(mass)OL-IL, 0.5%(mass) OL-IL/h-BN PEG400 dispersion under different loads

Fig.8 Friction coefficient curves of PEG400 and 0.5%(mass) h-BN hybrid, 0.5%(mass) OL-IL hybrid,0.5%(mass) OL-IL/h-BN PEG400 dispersion hybrid lubricated under different loads

Fig.9 SEM images of the wear scar on the balls lubricated with PEG400(a)—(b), 0.5%(mass) h-BN(c)—(d), 0.5%(mass) OL-IL/h-BN(e)—(f) PEG400 dispersion

Fig.10 XPS spectrum of C 1s(a),O 1s(b), Fe 2p(c), B 1s(d), N 1s(e)on the surface of the wear scar lubricated with 0.5%(mass) OL-IL/h-BN PEG400 dispersion

Fig.11 Schematic diagram of the lubrication mechanism of water-based lubricant containing 0.5%(mass) h-BN and 0.5%(mass) OL-IL/h-BN PEG400 dispersion

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Tribological performance of hexagonal boron nitride supported ionic liquid lubricant additives

纳米六方氮化硼负载离子液体润滑添加剂的摩擦学特性

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