The mixing ability of the screw was an important factor affecting the plasticization quality and uniformity of polymer during extrusion.The mixing characteristics of the innovatively proposed field synergy torsion screw were numerically simu-lated and analyzed at different screw speed by em-ploying Polyflow software,and meanwhile with EPDM rubber as raw material,a comparative experi-mental study was conducted on the mixing ability of conventional screw and field synergy torsion screw by measuring parameters,such as mixing efficiency,average residence time,distribution index,carbon black dispersion and particle size distribution through torsion extrusion technology.The results showed that the mixing efficiency of the field synergy torsion screw with torsion elements was higher,the residence time distribution was longer and the mixing effect of the entire extrusion system was improved,of which screw F had the best mixing ability.The ob-tained results were consistent with the simulation re-sults,proving that the field synergy torsion screw had the characteristic of enhancing mixing.
关键词
场协同扭转螺杆/混合性能/混合效率/平均停留时间/分布指数/炭黑分散度/粒径分布
Key words
field synergy torsion screw/mixing performance/mixing efficiency/average residence time/distribution index/carbon black dispersion/particle size distribution
维普
万方数据