Abstract
AbstractThe biomass oil pyrolysed from rice straw was refined through distillation process under one atmosphere pressure. Four distilled fractions were obtained in the temperature ranges of 54–64, 72–80, 84–92 and 96–100 °C respectively. Their chemical components and special group structures were analysed by gas chromatography‐mass spectrometry (GC‐MS) and Fourier transform infrared spectroscopy. The tribological performances of the prepared fractions were evaluated by MQ‐800 four‐ball tribometer as well. The results showed that both density and acid number of the biomass oil increased with the distillation temperature and that the total distillation yield was 55.7%. Every distillation fraction had different anti‐wear and friction reduction. Their average friction coefficients were 0.185, 0.227, 0.179 and 0.293 in 30 minutes, and the average wear scar diameters were 1.035, 0.958, 0.870 and 0.983 mm under a rotation speed of 1450 rpm respectively. It was found that the fraction distilled in the temperature range of 84–92 °C showed better friction reduction and wear resistance. Copyright © 2008 John Wiley & Sons, Ltd.
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