棕榈酸甲酯在纳米粒子协同作用下的蒸发特性研究

Study on evaporation characteristics of methyl palmitate under the synergistic effect of nanoparticles

研究了棕榈酸甲酯添加碳纳米管和纳米氧化铈在673 K、773 K和873 K环境温度下的蒸发特性.纳米粒子添加浓度为50 ppm、100 ppm、150 ppm、200 ppm、250 ppm和500 ppm.结果表明,在673 K的温度下只有100 ppm浓度配比的纳米添加剂促进混合液滴加速蒸发.在773 K的温度下所有浓度配比的纳米添加剂都提高了液滴蒸发速率,但是100 ppm的纳米添加剂使得液滴最快蒸发结束.在873 K的环境温度下六种不同配比的纳米添加剂都促进了液滴蒸发,蒸发用时非常接近.但是对比蒸发时间发现,100 ppm的浓度配比仍然是蒸发最快的.显然,纳米碳管和纳米氧化铈共混棕榈酸甲酯的六种浓度配比方案中,100 ppm的纳米添加剂在蒸发过程中的协同作用最佳.

The evaporation characteristics of carbon nanotubes and nano-cerium oxide added with methyl palmitate were investigated at ambient temperatures of 673 K,773 K and 873 K.The nanoparticle addition concentrations were 50 ppm,100 ppm,150 ppm,200 ppm,250 ppm and 500 ppm.The results showed that at 673 K,only the 100 ppm concentration of nano-additives promotes the accelerated evaporation of mixed droplets.At 773 K,all concentrations of nano-additives increase the droplet evaporation rate,but 100 ppm nano-additives end the droplet evaporation the fastest.At 873 K the six nano-additives with different ratios at ambient temperature all promoted the evaporation of droplets,and the evaporation time was very close.But comparing the evaporation time,it was found that the concentration ratio of 100 ppm was still the fastest evaporation.Obviously,carbon nanotubes and nano-cerium oxide among the six concentration ratio schemes of blending methyl palmitate,100 ppm of nano-additives had the best synergistic effect during the evaporation process.