The Environmental Aspects of Lubricants

Kubo, K; Kagaya, Mineo; Sunami, M.; Wakabayashi, Toshiaki; Watanabe, Seiya

doi:10.1243/1350650991542569

Cited by 5 publications

(3 citation statements)

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“…The environmental impact, degradation and health hazards of lubricants are still concerns, which have yet to be fully quantified. 5,6 Another class of lubricants makes use of ball bearings that employ a "rolling" mechanism to reduce friction between sliding surfaces. The concept of using nanometer-sized spherical particles as nanoball bearings is not novel.…”

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“…The additives serve several purposes including viscosity index improvers (which allow the lubricant to attain desired viscosities at particular temperatures), antioxidant agents, anticorrosion agents, wear-protection agents, acid neutralizers, antimicrobials, and dispersants. The environmental impact, degradation and health hazards of lubricants are still concerns, which have yet to be fully quantified. , …”

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confidence: 99%

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Carbon Microspheres as Ball Bearings in Aqueous-Based Lubrication

Dennis

Jin

John

et al. 2011

ACS Appl. Mater. Interfaces

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We present an exploratory study on a suspension of uniform carbon microspheres as a new class of aqueous-based lubricants. The surfactant-functionalized carbon microspheres (∼0.1 wt %) employ a rolling mechanism similar to ball bearings to provide low friction coefficients (μ ≈ 0.03) and minimize surface wear in shear experiments between various surfaces, even at high loads and high contact pressures. The size range, high monodispersity, and large yield stress of the C(μsphere), as well as the minimal environmental impact, are all desirable characteristics for the use of a C(μsphere)-SDS suspension as an alternative to oil-based lubricants in compatible devices and machinery.

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confidence: 99%

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Carbon Microspheres as Ball Bearings in Aqueous-Based Lubrication

Dennis

Jin

John

et al. 2011

ACS Appl. Mater. Interfaces

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“…In the research, Montgomery focused on the importance use of value added byproducts of agriculture by biosynthesized molecules found in agriculture instead of fossil fuel-based chemicals. Kubo et al (1999) investigated the environmental lubricants and the research activities such as fuel efficient engine oils and biodegradable two-cycle engine oils. The hydrorefined base oils and PAO uses in passanger car oils have importance to increase the fuel-saving performances.…”

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confidence: 99%

Bioalternatives for four stroke motorcycle engine oils

Isler

Yakaboylu

Alyakut

et al. 2012

Industrial Lubrication and Tribology

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Purpose -The purpose of this paper is to investigate alternatives for four stroke 10w40 motorcycle engine oils. Today, mineral and synthetic-based lubricants are widely used but because of ecological aspects, which are gaining in importance nowadays and limited resources of mineral oils, environmentally-friendly biobased lubricants are gaining in importance. Biobased lubricants are also important for using national resources rather than importing crude oils which are limited. The main consumption of lubricant market is motor oils. In this study, starting from mineral, synthetic and biobased lubricants; mineral, synthetic, biomineral and biosynthetic based four stroke motorcycle engine oils (10w40) are prepared, then lubricity properties of the motor oils are determined. Design/methodology/approach -The lubricity tests of the samples are done in a fixed forced lubricity test rig and the motorcycle motor oil preparation are conducted according to ASTM test methods. Findings -The results show that 5 per cent of biobased lubricants will be suitable for preparing 10w40 motor oils in both mineral and synthetic based motor oils. Also improvements in the lubricity properties with the blend with biobased lubricants are seen. Originality/value -The paper presents biomineral and biosynthetic 10w40 motor oils as alternative candidates for motorcycle motor oils.

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