The die pressure, apparent viscosity, flow activation energy of mPE and its blends reduce greatly, productivity increases in the presence of ultrasonic oscillations during extrusion.

• 超声频率的增加,功率越大,熔体表观粘度越低,平均作用时间越长,熔体表观粘度降低的程度也越大。 施加250W超声挤出可使mPE加工温度降低18℃、口模压力降低45%25、挤出产量增加1倍,而表观粘度则会降低近50%25。