【摘要】 利用自行设计的长方形可视化流道进行了大量的试验,观察CO₂气泡在聚合物熔体中的动态特性,分析了CO₂气泡与聚合物熔体在螺旋流场及组合流场中的形态及变化。通过改变加工条件及控制参数,利用可视化流道和机头,观察并摄取了熔融聚合物中气泡的形态、变形、破裂等动力学现象,从实验观察角度出发,总结出CO₂气泡在螺旋流场中的形态、分布,大小及变形等的影响因素。更多还原

【Abstract】 Large tests are carried out about the CO2 gas and the polymer melts in a kind of helix flow field using the direct visual flow-field. Use self-designing direct visual flow field, and change the different working conditions and the control parameters, the shape, motion and breakup of gas bubble were observed, and the relation of the different helix flow field structures, the extrusion condition and the motion, the shape of gas bubble were analyzed.更多还原