摘要
In the present study,electrostatic atomization(EA)behavior of several test liquids having much higher viscosities(1 400 mPa·s)than have previously been studied was investigated by spraying at a series of applied voltages and flow rates.The results showed that to obtain stable cone-jet mode spraying and hence gain better monodispersity of droplets,electrical conductivity,viscosity and surface tension of the liquid are important controlling factors.The stable cone-jet mode could be easily established for liquids having shear viscosities in the range from 80 to 1 400 mPa·s and surface tensions below 65 mN·m-1.In contrast,methylcellulose aqueous solutions with shear viscosities ranging from 10 to 540 mPa·s and moderate surface tensions(50~56 mN·m-1)generated more complicated spraying modes.However,fine TiO2 powder(a few micrometers in size)could be prepared using the EA method from its precursor solutions.
In the present study,electrostatic atomization（EA）behavior of several test liquids having much higher viscosities（1 400 mPa·s）than have previously been studied was investigated by spraying at a series of applied voltages and flow rates.The results showed that to obtain stable cone-jet mode spraying and hence gain better monodispersity of droplets,electrical conductivity,viscosity and surface tension of the liquid are important controlling factors.The stable cone-jet mode could be easily established for liquids having shear viscosities in the range from 80 to 1 400 mPa·s and surface tensions below 65 mN·m-1.In contrast,methylcellulose aqueous solutions with shear viscosities ranging from 10 to 540 mPa·s and moderate surface tensions（50~56 mN·m-1）generated more complicated spraying modes.However,fine TiO2 powder（a few micrometers in size）could be prepared using the EA method from its precursor solutions.
出处
《沈阳建筑大学学报（自然科学版）》
CAS
北大核心
2011年第6期1127-1136,共10页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家自然科学基金项目(21103112)
住房和城乡建设部科技攻关项目(2010-K6-22)
辽宁省教育厅基金项目(2008593)
辽宁省高校重点实验室基金项目(CL-200902)
