Study on die-swell of meta-aramid solution
Die-swell is a unique phenomenon for polymer solution when it was extruded from a die. This was resulted from the viscoelastic properties of polymer solution. The extent of die-swell was usually expressed by extrusion die-swell ratio (B). The extrusion die-swell ratio (B) of meta-aramid solution was studied on a Capillary-Rheometer by gravimetric method in this paper. The die-swell ratio for meta-aramid solutions was determined under different temperature, capillary L/D, filter layers, pressure and other conditions so as to investigate the effects of die geometry and extrusion conditions on the die swell behaviour of the solution. The results showed that B of the solution increased linearly with increase of pressure; when pressure and temperature were constant, B decreased nonlinearly with increase of the die length/diameter ratio; when pressure, temperature and L/D were constant, B decreased with increase of filter layers; when other conditions were constant, B decreased with increase of temperature.
DONG Qinli LIU Liqi CHEN Lei YU Junrong ZHU Jing HU Zuming
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University, S State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University,
国际会议
2009 International Conference on Advanced Fibers and Polymer Materials(2009年先进纤维与聚合物材料国际学术会议)
上海
英文
302-305
2009-10-21（万方平台首次上网日期，不代表论文的发表时间）