Tribological and Oxidation Properties Study of a Kind of Sulfonate-Modified Nano Na2CO3 and K2CO3

2011 ◽  
Vol 694 ◽  
pp. 98-102 ◽  
Author(s):  
Zhong Yi He ◽  
Li Ping Xiong ◽  
Jun Xiao Wang ◽  
Jian Wei Qiu ◽  
Xi Sheng Fu
Keyword(s):  
Thermal Stability ◽  
Free Energy ◽  
Tribological Properties ◽  
Antioxidant Properties ◽  
Lubricating Oil ◽  
Base Oil ◽  
Oil Additives ◽  
Oxidation Properties ◽  
Lubricating Oil Additives

The tribological properties of a middle base value metal alkali sulfonate-modified nano Na2CO3 and K2CO3 as lubricating oil additives were introduced in this paper, and its collaboration with the ashless antioxidant properties were evaluation by using PDSC. The results show that the product possesses good tribological properties, thermal stability, and a good synergistic antioxidation effect with ashless antioxidant, it mainly to increase oxidation free energy of base oil.

Tribological Properties of Zirconium Oxide, Spinel and Mullite Nanopowders as Lubricating Oil Additives

2016 ◽  
Vol 721 ◽  
pp. 451-455
Author(s):  
Armands Leitans ◽  
Eriks Palcevskis
Keyword(s):  
Tribological Properties ◽  
Zirconium Oxide ◽  
Friction Pair ◽  
Synthesis Method ◽  
Lubricating Oil ◽  
Nanosized Powders ◽  
Base Oil ◽  
Oil Additives ◽  
Oxide Spinel ◽  
Lubricating Oil Additives

In work investigated effects of zirconium oxide (ZrO2), spinel (MgAl2O4) and mullite (Al6Si2O13) nanosized powders on the base oil tribological properties. The nanosized (30-40nm) powders manufactured by plasma chemical synthesis method. Tribological experiments used on ball-on-disc type tribometer, measured coefficient of friction and determined metalic disc wear. Base oil used selectively purified mineral oil (conform SAE-20 viscosity) without any functional additives. Nanosized powders dispersed in base oil at 0.5; 1.0; 2.0; wt.%. At work cocluded, that the adition nanoparticles in base oil, possible reduced friction pair wear and friction coefficient. As the main results include spinel (MgAl2O4) nanoparticles 0.5 and 1.0 wt. % concentration ability reduced friction coeffiecient value.

Tribological and Oxidation Properties Study of a Kind of Sodium Sulfonate-Modified Nano Carbonate Sodium

2010 ◽  
Vol 146-147 ◽  
pp. 1605-1611
Author(s):  
Zhong Yi He ◽  
Li Ping Xiong ◽  
Huan Xu ◽  
Tao Li ◽  
Jian Wei Qiu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Tribological Properties ◽  
Lubricating Oil ◽  
Scanning Calorimetry ◽  
Base Oil ◽  
Sodium Sulfonate ◽  
Pressure Differential Scanning Calorimetry ◽  
Oxidation Properties ◽  
High Base ◽  
Lubricating Oil Additive

The tribological properties of a high base value sodium sulfonate-modified nano carbonate sodium as lubricating oil additive were introduced in this paper, and its antioxidant collaboration property with ashless antioxidant was evaluation by using pressure differential scanning calorimetry(PDSC). The results show that the product possesses good tribological properties, thermal stability, and a good synergistic antioxidation effect with ashless antioxidant, and mainly to increase oxidation free energy of base oil.

Tribological properties of Al2O3 nanoparticles as lubricating oil additives

2014 ◽  
Vol 40 (5) ◽  
pp. 7143-7149 ◽  
Author(s):  
Ting Luo ◽  
Xiaowei Wei ◽  
Xiong Huang ◽  
Ling Huang ◽  
Fan Yang
Keyword(s):  
Tribological Properties ◽  
Lubricating Oil ◽  
Al2o3 Nanoparticles ◽  
Oil Additives ◽  
Lubricating Oil Additives

Synthesis and tribological properties of oil-soluble copper nanoparticles as environmentally friendly lubricating oil additives

2015 ◽  
Vol 67 (3) ◽  
pp. 227-232 ◽  
Author(s):  
Yujuan Zhang ◽  
Yaohua Xu ◽  
Yuangbin Yang ◽  
Shengmao Zhang ◽  
Pingyu Zhang ◽  
...  
Keyword(s):  
Tribological Properties ◽  
Liquid Paraffin ◽  
Lubricating Oil ◽  
Infrared Spectrometry ◽  
Cu Nanoparticles ◽  
Wear Properties ◽  
Environment Friendly ◽  
Content Type ◽  
Oil Additives ◽  
Lubricating Oil Additives

Purpose – The purpose of this paper is to synthesize oil-soluble copper (Cu) nanoparticles modified with free phosphorus and sulfur modifier and investigate its tribological properties as environment-friendly lubricating oil additives. Design/methodology/approach – To improve the anti-oxidation properties of these nanoparticles, two kinds of surface modifiers, oleic acid and oleylamine were used simultaneously. The morphology, composition, structure and thermal properties of as-synthesized Cu nanoparticles were investigated by means of transmission electron microscopy, X-ray powder diffraction, Fourier transform infrared spectrometry and differential thermal and thermogravimetric analysis. The tribological properties of as-synthesized Cu nanoparticles as an additive in liquid paraffin were evaluated with a four-ball friction and wear tester. Findings – It has been found that an as-synthesized Cu nanoparticle has a size of 2-5 nm and can be well dispersed in organic solvents. Tribological properties evaluation results show that as-synthesized Cu nanoparticles possess excellent anti-wear properties as an additive in liquid paraffin. The reason lies in that as-synthesized surface-capped Cu nanoparticles are able to deposit on sliding steel surface and form a low-shearing-strength protective layer thereon, showing promising application as an environmentally acceptable lubricating oil additive, owing to its free phosphorus and sulfur elements characteristics. Originality/value – Oil-soluble surface-modified Cu nanoparticles without phosphorus and sulfur were synthesized and its tribological properties as lubricating oil additives were also investigated in this paper. These results could be very helpful for application of Cu nanoparticles as environment-friendly lubricating oil additives.

scholarly journals Tribological properties of WS2/graphene nanocomposites as lubricating oil additives

RSC Advances ◽  
2017 ◽  
Vol 7 (23) ◽  
pp. 14060-14068 ◽  
Author(s):  
Dan Zheng ◽  
Yan-ping Wu ◽  
Zheng-yang Li ◽  
Zhen-bing Cai
Keyword(s):  
Tribological Properties ◽  
Lubricating Oil ◽  
Graphene Nanocomposites ◽  
Coordinate Method ◽  
Oil Additives ◽  
Polar Coordinate ◽  
Nano Additives ◽  
Lubricating Oil Additives

Comparison of the lubricating mechanisms of nano-additives (graphene, WS2 nanoparticles, and WS2/graphene nanocomposites) was carried out using a simplified polar coordinate method.

scholarly journals “The behavior of some terpolymers as lubricating oil additives”

2020 ◽  
Vol 10 (3) ◽  
pp. 115-123
Author(s):  
Reham I. El-shazly ◽  
Rasha S. Kamal ◽  
Amal M. Nassar ◽  
Nehal S. Ahmed ◽  
Galal H. Sayed
Keyword(s):  
Thermal Stability ◽  
Viscosity Index ◽  
Polymerization Reaction ◽  
Lubricating Oil ◽  
Gravimetric Analysis ◽  
Oil Additives ◽  
Lubricating Oil Additives ◽  
Acrylate Esters ◽  
Thermal Stability Of ◽  
The Ideal

Abstract In this work, we prepared different alkyl acrylates by esterifying acrylic acid with different alcohols (decanol, dodecanol, hexadecanol and octadecanol). Anilimide was then produced by the reaction of aniline with maleic anhydride. Different teropolymers were prepared by polymerization reaction of anilimide, different alkyl acrylate esters and olefins in different ratios. The thermal stability of the prepared terpolymers was measured by thermal gravimetric analysis which demonstrated a high thermal stability. The polymers were degraded above 500 °C. The rheology behavior shows shear-thinning, it approaches the ideal Newtonian behavior in case of polymer (C). The prepared terpolymers succeeded in raising the viscosity index of oil to 118 in case of polymer (C) and decreasing the pour point of oil to -12 in case of polymer (E).

Preparation and evaluation of tribological properties of oil-soluble rice-like CuO nanoparticles

2015 ◽  
Vol 67 (3) ◽  
pp. 276-283 ◽  
Author(s):  
Hao Liu ◽  
Yujuan Zhang ◽  
Shengmao Zhang ◽  
Yanfen Chen ◽  
Pingyu Zhang ◽  
...  
Keyword(s):  
Tribological Properties ◽  
Normal Load ◽  
Cuo Nanoparticles ◽  
Lubricating Oil ◽  
Infrared Spectrometry ◽  
Environment Friendly ◽  
Content Type ◽  
X Ray ◽  
Oil Additives ◽  
Lubricating Oil Additives

Purpose – The purpose of this paper is synthesis of oil-soluble non-spherical nanoparticles modified with free phosphorus and sulphur modifier and investigation of their tribological properties as environment-friendly lubricating oil additives. Design/methodology/approach – To study the effect of morphology of nanoparticles on their tribological properties, rice-like CuO nanoparticles were synthesized. To improve the solubility of CuO nanoparticles in organic media, the in-situ surface modification method was used to synthesize these products. The morphology, composition and structure of as-synthesized CuO nanoparticles were investigated by means of transmission electron microscopy, X-ray powder diffraction, thermogravimetric analysis and Fourier transform infrared spectrometry. The tribological properties of as-synthesized CuO nanoparticles as an additive in liquid paraffin (LP) were evaluated with a four-ball tribometer. The morphology and elemental composition of worn steel ball surfaces were analysed by X-ray photoelectron spectroscopy. Findings – It has been found that as-synthesized CuO nanoparticles with rice-like morphology have an average size of 7 and 15 nm along the shorter axle and longer axle, respectively, and can be well-dispersed in LP. Tribological properties evaluation results show that as-synthesized CuO nanoparticles as additives in LP show good friction-reducing, anti-wear and load-carrying capacities, especially under a higher normal load. Originality/value – Oil-soluble rice-like CuO nanoparticles without phosphorus and sulphur were synthesized and their tribological properties as lubricating oil additives were also investigated in this paper. These results could be very helpful for application of CuO nanoparticles as environment-friendly lubricating oil additives, owing to their free phosphorus and sulphur elements characteristics.

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