Potential of using polyethylene as viscosity enhancer of palm oil to use as a lubricating oil

Abstract

Biodegradable vegetable oil-based lubricating oil is a better auxiliary for mineral-based lubricants as their viscosity index, flash point, lubricity is high. Nonetheless, their limited viscosity range is a major constraint of their usage as lubricating oil. Polymers have proven their capability of increasing the viscosity of vegetable oils without adversely affecting their lubricating properties. Potentially of use of oxidized polyethylene (OPE) as a viscosity booster of palm oil to use as a lubricating oil is studied adding several weight percentages of OPE to the palm oil independently. The addition of 1.75 wt% of OPE to the palm oil resulted in a blend with comparable kinematic viscosity to H68 and the addition of 2.0 wt% of OPE to the palm oil resulted in a blend with comparable kinematic viscosity to SAE30. Palm oil behaves as Newtonian fluid at low temperatures and as the temperature increases, it behaves as shear thickening fluid while the addition of OPE cause to shear thinning behavior.

Multi-Objective Optimization Model of Industrial Lubricants Based on Integer Nonlinear Programming

“…Compared with references [6][7][8][9][10][11][12][13][14], the blending formula of the six performance indexes proposed in this paper are simple in form and convenient in calculation, and the calculated values are in good agreement with the measured values, which can well predict the related indexes of the blended oil. Compared with references [6][7][8][9][10][11][12][13][14], the blending formula of the six performance indexes proposed in this paper are simple in form and convenient in calculation, and the calculated values are in good agreement with the measured values, which can well predict the related indexes of the blended oil.…”

“…The chemical composition of oil products and additives [5] is very complex, and their physical and chemical properties generally do not have an additive effect, so the blending of lubricating oil is mostly nonlinear. In addition, the performance indexes of lubricating oil mainly include viscosity [6][7][8], freezing point [9], acid value [10], flash point [11], oxidation stability [12,13], residual carbon [14], and so on. Therefore, the optimization of the design of a lubricating oil blending scheme [15] mainly includes two aspects: one is to select the base oils reasonably to meet the performance index requirements of the blended product; the other is to establish the blending mathematical model [16] and determine the blending scheme of each base oil on the premise of meeting the product performance indexes.…”

Analysis of Coefficient of Friction of Deep-Drawing-Quality Steel Sheets Using Multi-Layer Neural Networks

“…However, an increase in kinematic viscosity causes a slight increase in friction. As concluded by Pathmasiri et al [45], too high a viscosity may reduce the lubrication efficiency, while too low a viscosity may result in excessive mechanical contact of the surface asperities. The lubricant pressure has the greatest influence on the value of the COF.…”