以文冠果种仁油为研究对象，分别与不同酯基醇（甲醇、乙醇）进行酯交换反应制备2种不同酯基的文冠果生物柴油，并测定了0^#柴油分别与2种不同酯基生物柴油以一系列不同的混掺体积比（0、10%、20%、30%、40%、50%、60%、70%、80%、90%、100%）混合燃料的密度、表面张力、运动黏度，分析了这些柴油的理化性能随着温度及混掺体积比的变化情况。结果表明，甲醇基生物柴油和乙醇基生物柴油的密度随着温度的升高而降低；表面张力总体上随着温度的升高而下降，同一温度下的表面张力会随着体积比的增大而逐渐下降；2种生物柴油的运动黏度均随着体积分数的增大而上升，碳链越长，运动黏度越大。红外光谱分析表明，2种不同酯基生物柴油的官能团基本一致。

Xanthoceras sorbifolia bunge biodiesels with two ester groups are prepared through transesterification of xanthoceras sorbifolia bunge oil with methanol and ethanol respectively and are then separately blended with 0^# pure diesel oil at different ratios such as 0,10%,20%,30%,40%,50%,60%,70%,80%,90% and 100%.The density,surface tension and kinematic viscosity of the blending fuels are investigated.Influences of temperature and blending ratio on the physicochemical properties of blending fuels are studied.Results illustrate that the density of both methanol-based blending biodiesel and ethanol-based blending biodiesel decreases as temperature increases,so does their surface tension.At the same temperature,their surface tension decreases as the volume blending ratio increases.The kinematic viscosity of two categories of blending biodiesels increases with the increase of volume blending ratio.Xanthoceras sorbifolia bunge biodiesels with larger ester groups exhibit higher kinematic viscosity.Detection by Infrared spectra suggests that two categories biodiesels have similar functional groups.

郝一男(1983-),男,博士,高级实验师,研究方向为生物质能源,nanyihao83@163.com