Y2O3 nanoparticles prepared in microemulsion, which were sprayed on cut tobacco, can reduce tar in cigarettes effectively. Reducing the content of tar in many brands of cigarettes was studied. The results show that Y2...Y2O3 nanoparticles prepared in microemulsion, which were sprayed on cut tobacco, can reduce tar in cigarettes effectively. Reducing the content of tar in many brands of cigarettes was studied. The results show that Y2O3 nanoparticles can reduce tar in cigarettes effectively and have no influence on nicotine when the addition of Y2O3 nanoparticles is 0,5-1.2%. The smaller the grain size of Y2O3 nanoparticles is,the more effective tar reduction is. The principle of reducing tar in cigarettes is studied preliminarily.展开更多
This paper presents initial development of polymer application. PNC materials containing a polyamide （PA） and nano to improve the mechanical properties. Commercial polyamide 6 nanocomposites （PNC） material for rap...This paper presents initial development of polymer application. PNC materials containing a polyamide （PA） and nano to improve the mechanical properties. Commercial polyamide 6 nanocomposites （PNC） material for rapid manufacturing （RM） particles （5 wt%） were produced by solution blending with the aim （PA6） was dissolved in formic acid （HCO2H） together with two different types of nano particle materials： yttrium stabilised zirconia （YSZ） and Hectorite clay （Benton 166） and spray-dried to create powder, creating powder with particle sizes in the range of 10-40 μm. The materials were processed on a CO2 selective laser sintering （SLS） experimental machine. Mechanical properties of the PNCs were evaluated and the results were compared with the unfilled base polymer. Good dispersion of additives was achieved by solution blending, however the PA6 was degraded during the material preparation and spray drying process which resulted in the formation of porous structure and low strength. However the addition of 5 （wt%） nano particles in the PA6 has shown to increase strength by an average of 50-60%. Further work on powder preparation is required in order to fully realize these performance benefits.展开更多
文摘Y2O3 nanoparticles prepared in microemulsion, which were sprayed on cut tobacco, can reduce tar in cigarettes effectively. Reducing the content of tar in many brands of cigarettes was studied. The results show that Y2O3 nanoparticles can reduce tar in cigarettes effectively and have no influence on nicotine when the addition of Y2O3 nanoparticles is 0,5-1.2%. The smaller the grain size of Y2O3 nanoparticles is,the more effective tar reduction is. The principle of reducing tar in cigarettes is studied preliminarily.
文摘This paper presents initial development of polymer application. PNC materials containing a polyamide （PA） and nano to improve the mechanical properties. Commercial polyamide 6 nanocomposites （PNC） material for rapid manufacturing （RM） particles （5 wt%） were produced by solution blending with the aim （PA6） was dissolved in formic acid （HCO2H） together with two different types of nano particle materials： yttrium stabilised zirconia （YSZ） and Hectorite clay （Benton 166） and spray-dried to create powder, creating powder with particle sizes in the range of 10-40 μm. The materials were processed on a CO2 selective laser sintering （SLS） experimental machine. Mechanical properties of the PNCs were evaluated and the results were compared with the unfilled base polymer. Good dispersion of additives was achieved by solution blending, however the PA6 was degraded during the material preparation and spray drying process which resulted in the formation of porous structure and low strength. However the addition of 5 （wt%） nano particles in the PA6 has shown to increase strength by an average of 50-60%. Further work on powder preparation is required in order to fully realize these performance benefits.
