Friction And Wear Preventive Characteristic Of Biolubricant Derived From Waste Cooking Oil

A. Kadir, Syahdan Amirul (2016) Friction And Wear Preventive Characteristic Of Biolubricant Derived From Waste Cooking Oil. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The needs of renewable and biodegradable lubricant had become the most environmental concern issues nowadays to replace the mineral based lubricant. This is due to the environment effect imposes by mineral based oil making the effect of substitution to be essential. This study is focused on developed bio lubricant derived from waste cooking oil and study the wear and friction preventive characteristic of the bio lubricant. In order to conduct this study, the waste cooking oil had to undergo transesterification process to produce the bio lubricant. The wear and friction preventive characteristic of the oil were acquired by using four ball tester methods (ASTM D4172) with different load and speed. The wear scar diameter of the balls was measured using optical microscope and the wear mechanism also had been studied. The coefficient of friction of the bio lubricant at 600 rpm with load 147N is 0.0296, 392N is 0.0639 and 736N is 0.0795. While at 1200 rpm with load 147N is 0.0878, 392N is 0.0795 and 736N is 0.0726. At 1600 rpm with load 147N is 0.0402, 392N is 0.0680 and 736N is 0.0771. The measurement for the wear scar diameter at 600 rpm with load 147N is 0.1750mm, 392N is 0.2187mm and 736N is 0.2548mm. While at 1200 rpm with load 147N is 0.2209mm, 392N is 0.02230mm and 736N is 0.2618mm. At 1600 rpm with load 147N is 0.2276mm, 392N is 0.2400mm and 736N is 0.2747mm. It was found that the transesterification process has reduce the free fatty acid in the waste cooking oil and produce a better friction and wear preventive ability. The test show that the bio lubricant coefficient of friction increase as the speed and load increase in boundary lubrication regime. The bio lubricant potential application is in non-combustion engine such as compressor and centrifugal pump.

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