Development Of New Bio-Lubricant Using Blended ZDDC And ZDDP As Tribological Properties Improver In Palm Oil

Yap, Kiat Bin (2016) Development Of New Bio-Lubricant Using Blended ZDDC And ZDDP As Tribological Properties Improver In Palm Oil. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Lubricant is a substance that interposes between the sliding surfaces to reduce friction and wear. The growing environmental concerns resulted in the increasing of demand of an environmental friendly lubricant. This is due to the majority of the current lubricants are mineral based lubricants which are non-biodegradable and toxic to the environment. Hence, the development of non-toxic and biodegradable lubricant has been encouraged to overcome the environmental problems that related with mineral based lubricant. In this study, the main objective is to develop a new bio-lubricant with satisfactory lubricating performance. For developing a new bio-lubricant, commercialized cooking palm oil was blended with lubricant additives, ZDDC and ZDDP by using direct introduction method. Six different concentrations of ZDDC and ZDDP were used in the sample preparation which are 0wt% + 0wt%, 2.0wt% + 0wt%, 1.5wt% + 0.5wt%, 1.0wt% + 1.0wt%, 0.5wt% + 1.5wt%, and 0wt% + 2.0wt%. The samples of palm oil were tested for the additive dilution in accordance with ASTM test method and characterized for tribological properties by using heated viscometer, four-ball tester and optical microscope. The samples were also compared with mineral based lubricant SAE 15W-40 in term of tribological performance. From the results, it is evident that palm oil with the addition of 2wt% ZDDP exhibited the most desirable tribological characteristics among the prepared samples. It showed the lowest coefficient of friction at 0.075 and the smallest wear scar diameter at 80.8m and these results are relatively lower compared to the mineral oil SAE 15W-40. In the end of this study, the new bio-lubricant with superior tribological properties was successfully developed by blending 2wt% ZDDP into commercialized cooking palm oil.

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