PARTICULATE SCIENCE AND TECHNOLOGY
·
2018
·
IF 1.081
Yi Li,Songwei Zhang,Qi Ding,Jinzhu Tang,Baofeng Qin,Litian Hu
The potassium borate nanoparticles (nPB) as lubricant additive were prepared with an eco-friendly method. The tribological properties of nPB and ZDDP as lubricant additives in polyalphaolefin (PAO) were systematically evaluated using a four-ball tribometer and a SRV fretting friction and wear tester, which suggested that nPB exhibited excellent extreme pressure capacity, and better anti-wear and friction-reducing properties than ZDDP. Results of surface analyses show that the good lubricating properties and excellent load-carrying capacity of nPB in PAO are ascribed to the boundary protecting films, which were composed of some easy-shearing compounds: B2O3, FexBy and Fe2O3.
研究领域:
材料科学
·
摩擦学
·
表面工程
✓ 已验证
DOI
高影响因子
Lubricants
·
2023
·Vol. 11
·期 9
·387
·
IF 3.5
Tingting Wang,Liang Zhang,Hao Chen,Li Wu,Xinlei Gao
In this study, a systematic test of 36 organic liquid compounds as lubricants in the SiC/PI friction pair was conducted to investigate their friction-reducing performance. The back propagation neural network (BPNN) method was employed to establish a quantitative structure tribo-ability relationship (QSTR) model for the friction performance of these lubricants. The developed BPNN-QSTR model exhibited excellent fitting and predictive accuracy, withR2= 0.9700,R2(LOO) = 0.6570, andq2= 0.8606. The impact of different descriptors in the model on the friction-reducing performance of the lubricants was explored. The results provide valuable guidance for the design and optimization of lubricants in SiC/PI friction systems, contributing to the development of high-performance lubrication systems.Keywords:organic liquid lubricants;quantitative structure tribo-ability relationship;back propagation neural network;friction-reducing performance
研究领域:
材料科学
·
摩擦学
✓ 已验证
DOI
高影响因子
MATERIALS & DESIGN
·
2015
·
IF 3.501
Heng Zhang,Libo Wang,Qiang Chen,Ping Li,Aiguo Zhou,Xinxin Cao,Qianku Hu
In this study, a Ti 3 C 2 nanomaterial and Ti 3 C 2 /UHMWPE (ultrahigh molecular weight polyethylene) nanocomposites were prepared. The morphology, structure and properties of the Ti 3 C 2 /UHMWPE nanocomposites were investigated. The results indicate that Ti 3 C 2 nanoparticle can improve the thermal and mechanical properties of UHMWPE . The crystallinity and hardness of the Ti 3 C 2 /UHMWPE nanocomposite increase with the content of Ti 3 C 2 . The tensile and breaking strengths of the nanocomposites are enhanced with increasing Ti 3 C 2 content and reach maximum values at a mass fraction of 0.75 wt.%. The creep performance is enhanced after the addition of Ti 3 C 2 to the matrix. The frictional properties of the Ti 3 C 2 /UHMWPE composites were investigated using a pin-on-disc tester. The Ti 3 C 2 /UHMWPE composites exhibited a better friction-reducing performance compared with pure UHMWPE . The addition of Ti 3 C 2 can reduce the adhesive wear and plow friction, which results in the worn surfaces of the Ti 3 C 2 /UHMWPE composite being smoother than those of pure UHMWPE.
研究领域:
材料科学
·
高分子材料
·
摩擦学
·
纳米复合材料
·
机械工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2018
·Vol. 54
·期 6
·4626-4636
·
IF 2.993
Zhang Lei,He Yi,Zhu Lin,Jiao Zhilin,Deng Weizhou,Pu Caiping,Han Chunmei,Tang Shan
Alkyl phosphate modified graphene oxide (GON-DDP) was successfully synthesized using dodecanol, ethanol amine and self-made graphene oxide (GO) as precursors. The structure and morphology of GON-DDP were characterized by FT-IR, XPS, TG/DSC, SEM and TEM. The characterization results indicate that long alkyl phosphate chains were successfully grafted on GO surface, which guaranteed the dispersibility of GON-DDP in hydroisomerization dewax base oil (VHVI8). Then the tribology properties of GON-DDP as friction reduction and anti-wear additive in VHVI8 were evaluated on four-ball machine and SRV test system. The results show that the friction coefficient and wear scar diameter were reduced by 22.7% and 30.3% compared with bare VHVI8 base oil. Moreover, the non-seizure load of VHVI8 was significantly raised by adding GON-DDP. Finally, the lubrication mechanism was proposed according to Raman analysis on the worn surfaces of steel balls.
研究领域:
材料科学
·
摩擦学
·
表面工程
·
纳米材料
·
润滑化学
·
机械工程
·
功能材料
✓ 已验证
DOI
高影响因子
TRIBOLOGY INTERNATIONAL
·
2025
·
IF 6.9
Zhenqian Ma,Guojing Chen,Yunqi Liu,Xinrui Wang,Chunpeng Chai
Self-healing polymer lubricating materials can effectively extend the service life of engineering lubricants. However, their development and application in engineering face serious challenges due to inherent defects such as large friction coefficients and easy wear. In this study, a self-healing nanocomposite (Mo 2 Ti 2 C 3 /DMcA) with low wear, high thermal conductivity, and superior lubricity was developed by incorporating Mo 2 Ti 2 C 3 MXene as a solid lubricant into a zwitterionic polymer-based solid lubricating matrix. Experimental results demonstrated that the composite with 1.0 wt% Mo 2 Ti 2 C 3 exhibited optimal friction-reduction and anti-wear performance. Compared to the pristine polymer matrix, the composite achieved a 47.9 % reduction in the coefficient of friction and a 91.7 % decrease in wear rate. The composite coating showed good thermal conductivity, and the surface temperature reached 52.8℃ in 10 s when exposed to the ambient temperature of 60℃. Furthermore, the Mo 2 Ti 2 C 3 /DMcA nanocomposite displayed remarkable self-healing capabilities, achieving complete recovery of surface wear scars and scratches within 3 h under 25°C and 80 % RH. This study reveals that Mo 2 Ti 2 C 3 MXene serves as an ideal additive for enhancing the tribological properties of polymers, significantly broadening the application prospects of Mo 2 Ti 2 C 3 /DMcA composites in advanced friction materials.
研究领域:
材料科学
·
高分子科学
·
摩擦学
·
纳米技术
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Xu Wu,Zhenru Zhang,Jianquan Zhao,Baogang Wang
Owing to their exceptional thermal stability, distinctive internal layered structure, and superior mechanical strength, graphitic carbon nitride (g-C3N4) materials hold great potential as additives for base oils in the field of lubrication. However, their incompatibility with various base oils has significantly impeded their practical application. In this study, homogeneous and optically transparent g-C3N4 nanosheet/deep eutectic solvent (DES) nanofluids were successfully constructed through hydrogen bond interactions. When incorporated as additives into polyethylene glycol, these nanofluids demonstrated exceptional dispersion stability along with outstanding tribological properties, including remarkable friction reduction, excellent anti-wear performance, superior load-carrying capacity, and prolonged service lifespan. The synergistic effects of tribo-chemical reactions between the DES and iron surface interface and the interlayer sliding and self-repairing properties of g-C3N4 nanosheets played pivotal roles in forming a robust boundary lubrication film. This tribo-induced film, comprising g-C3N4 nanosheets and tribo-chemical derivatives (including iron oxides and iron nitride), exhibited remarkable tribological enhancement, effectively reducing friction and wear of the friction pair. These findings are expected to provide valuable insights into the practical application of g-C3N4 materials in the development of advanced lubricant additives.
研究领域:
材料科学
·
纳米技术
·
化学工程
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
ChemistrySelect
·
2023
·Vol. 8
·期 38
·e202302822
·
IF 2.1
Jiajia Fu,Chen Chen,Qiong Tang,Hong Xu,Lei Liu,Jinxiang Dong
Graphical At low temperatures, an efficient synthesis of polycyclic alkylated compounds by tetralin and 1,7-octadiene using Et 3 NHCl−AlCl 3 ionic liquid has been developed. The polycyclic alkylated tetralin with high viscosity has excellent tribological properties, which provides a new route for the production of high viscosity lubricating base oils from coal-based feedstocks. A novel polycyclic alkylated tetralin (PAT) similar to the naphthenic oil was successfully synthesized through Friedel-Crafts alkylation. This was accomplished by reacting coal-based chemical tetralin with 1,7-octadiene, using Et 3 NHCl−AlCl 3 ionic liquid as a catalyst. To enhance the selectivity towards dialkylated products (C28−2THN), the reaction conditions were systematically studied. Interestingly, the reaction could proceed well even at a low temperature of 0 °C and the selectivity for C28−2THN products could reach 54.0 %. The primary physicochemical properties of PAT were investigated in detail, it was found that the existence of polycyclic structures contributes to high viscosity, better thermal-oxidative stability and good polarity. Compared with octyltetralins- and commercial alkylnaphthalene-based oil (AN30), the PAT exhibited superior friction-reducing and anti-wear properties under the load of 100 N at 50 °C due to its rigid cycle structures and flexible chain.
研究领域:
化学工程
·
材料科学
·
润滑技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2022
·
IF 6.633
Haolin Li,Lin Ma,Ping Wen,Yunyan Han,Rui Dong,Mingjin Fan
The wide industrial application of titanium alloys requires lubricating materials with superior performance. Although ionic liquids have been recognized as potential choices for excellent lubricants, research on their tribological properties as applied to titanium alloys is not mature and systematic. In this work, a series of halogen-free sulfonate IL lubricants with different anions and cations were designed, synthesized, and applied to the titanium alloy (Ti-6Al-4V) friction pairs. From the perspective of molecular structure, the influencing factors on their physicochemical properties (thermal stability, viscosity) and tribological performances (friction-reducing and anti-wear performances) were explored, including the influences derived from their active element, chain length, molecular rigidity and branched chain structure. The lubricating mechanism contributed by the IL molecules and the Ti surfaces during sliding were analyzed by means of SEM, XPS, ECR and QCM. The results showed that physical adsorption and tribo-chemical reactions were involved during the sliding process. And the lubricating performances of the synthesized ILs may largely depend on their ability to form physical/chemical adsorption films on the titanium interfaces. The rigid benzene ring structure and flexible alkyl chain are conducive to strengthening the stability and efficiency of the formed interfacial tribo-film.
研究领域:
材料科学
·
化学工程
·
摩擦学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）