摘要
聚合反应挤出过程的数值模拟有助于实现化学反应控制、材料结构控制与极限加工条件的预测。建立了异向旋转双螺杆挤出机的等效模型、苯乙烯自由基聚合反应动力学模型和化学流变模型,数值分析了单体转化率、单体浓度、引发剂浓度、重均分子量以及材料黏度等物理量在反应挤出过程的演变规律。模拟结果与实验结果符合较好。
The numerical simulation of reactive extrusion processes for polymerization is helpful towards control of chemical reaction, material structure, and prediction of limiting process conditions. An equivalent reactor model of a counter-rotating twin screw extruder, a kinetic model of free radical polymerization and chemorheological models were constructed. Different variables like monomer conversion, monomer concentration, initiator concentration, weight-average molecular weight and material viscosity were numerically simulated, and the simulated results were in good agreement with the experimental results.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2006年第3期6-10,共5页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(50403009
50573079
50390096)
国家重点基础研究发展计划资助项目(2003CB615601)
关键词
反应挤出
自由基聚合
反应器模型
数值模拟
reactive extrusion
free radical polymerization
reactor model
numerical simulation
