采用组装式叶片挤出机在线观察了聚合物固体形变，考察了物料参数、颗粒大小和工艺参数对聚合物固体形变的影响． 结果表明: 固体颗粒会在叶片塑化输运单元的强制挤压作用下产生形变; 高模量的聚合物固体经叶片塑化输运单元作用后产生的塑性形变大; 大颗粒料经叶片塑化输运单元挤压作用后变成薄片，但小颗粒料则经历大的形变后粘连; 聚合物固体颗粒的形变量随着温度升高减小，随着转速的增加增大．

The solid polymer deformation was observed on-line by using an assembled vane extruder,and then the effects of material properties,pellet size and process parameters on the deformation were investigated.The results show that (1) polymer pellets are deformed under the compaction of VPCU;(2) the solid polymer of a higher modulus experiences a larger plastic deformation;(3) big polymer pellets are turned into small slices after extrusion by VPCU is done,while small pellets experience a big deformation and then form bonded structure;and (4) the solid polymer deformation decreases with the rise of temperature as well as with the decrease of rotor speeds.