De-Zhong Liao, Jieyu He, Lixin Mao
Jul 30, 2015
Citations
1
Influential Citations
5
Citations
Journal
Industrial Lubrication and Tribology
Abstract
Purpose – The aim of this work is to synthesize neopentyl glycol oligoesters based on adipic acid and rapeseed oil (NOAR) which may be used as the renewable and environmentally acceptable base fluids to replace mineral oils in the future. Design/methodology/approach – Oligomeric intermediates were synthesized in the first esterification of neopentyl glycol with adipic acid and characterized by Gas Chromatography-Mass Spectrometer (GC-MS) to calculate the average oligomerisation degree. NOAR were synthesized in the second esterification of oligomeric intermediates with rapeseed oil fatty acid. The effects of average oligomerisation degree on the viscosity, viscosity index, pour point, oxidative stability and biodegradability of NOAR were investigated; the tribological properties and thermal stability of NOAR were evaluated by four-ball tribometer and TGA, respectively. Findings – Results show that with the increase of average oligomerisation degree from 2.10 to 4.34, the viscosity of NOAR increased from 10...