DEVELOPMENT OF WRIGHT BLENDING METHOD IN VISCOSITYESTIMATION OF LIQUID-BINARY MIXTURE OFBASE OIL AND OLEFIN COPOLYMERS (OCPS)  

Oleh:

Saksono, Nelson ; Subiyanto ; Widodo, Setyo

Jenis: Article from Journal - ilmiah nasional
Dalam koleksi: Lemigas Scientific Contributions to Petroleum Science & Technology vol. 34 no. 01 (May 2011), page 1.
Topik: Developed- Wright s method; Kinematic viscosity; base oil; Olefin copolymers (OCPs)

Ketersediaan

Perpustakaan PKPM Nomor Panggil: L15 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

This study aims to develop mathematical equations used in Wrights method to predict kinematic viscosity of liquid-binary mixture consisting of base oil and additive. The equation is developed by addition of specific constants (ai and a), representing interaction of eachcomponentin the mixtures. Evaluation is done using 70 empirical data from 35 samples derived from liquid blending of 4 types of base oils (B.1, B.2, B.3 and B.4) and olefin copolymers(OCPs), varied in the range of 5-30 % of weight. Kinematic viscosity is measured at 40°C and lOO°Cusing a cannon automatic viscometer series 2000 (CAV 2000) accordingto ASTM method D 445. Validation of the equation (Developed- Wrights method is performed over all of liquid-binary mixtures of base oil-OCPs, and the accuracy is indicated by percent average absolute deviation (%AAD). The results show that the addition of specific constants could minimize the deviations of estimated values. The average deviation of Developed-Wrights method on kinematic viscosity estimation at 40°C and 100"Cbecomes 2.056 % and 1.917% respectively, lower than Wrights method which are 8.341 % and 14.696%; meanwhile the maximum deviation reaches 5.821 % and 4.657%, lower than Wrights method which are 21.256 % and 25.265% respectively. These values indicate that the Developed- Wrights method has better accuracy.

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