摘要
聚合物加工是决定塑料制品最终结构性能的中心环节,其重要的理论基础是聚合物流变学,研究聚合物流变行为的关键仪器是流变仪.但现有流变仪大多基于简化的流动模型,与实际复杂加工条件不符,难有效揭示聚合物在复杂应力场/温度场作用下的流变行为.我们基于前期发明的聚合物管旋转挤出加工技术和装备,研制了新型旋转挤出流变仪,可实现挤出/旋转的不同组合和管内外壁双冷,实施和调控旋转挤出中多种运动模式和应力场及温度场,实时检测挤出/旋转速度、应力、温度场,显示记录有关数据,既可用于研究实际加工复杂条件下聚合物加工流变行为,也可用于制备高性能多功能聚合物微导管.本文综述了新型旋转挤出流变仪的结构特点和原理及其在流变测试与聚合物微导管制备方面的应用.
Polymer processing determines the final structural performance of plastic products.Polymer rheology is one of the most important theoretical basis,and rheometer is the key instrument to study polymer rheology.However,most of the existing rheometers are based on simplified flow models,which are inconsistent with the practical conditions,and difficult to effectively reveal the rheological behavior of polymers under the complex stress/temperature fields in practical processing.Based on self-developed rotation extrusion processing technology and equipment,we have developed a novel rotation-extrusion rheometer,which can realize different combinations of extrusion/rotation and double cooling of the inner and outer walls of the tube;implement and control various motion modes,stress and temperature fields during rotation extrusion;and achieve real-time detection,display and recording of data about extrusion/rotation speed,stress,temperature field.The rotation extrusion rheometer can be used not only to study the rheological behavior of polymer processing under complex conditions in practical processing,but also to prepare high performance multifunctional polymer tubes.The structural features,principles and application of the novel extrusion-rheometer in rheological testing and preparation of polymer tube are reviewed.
作者
李怡俊
聂敏
皮林
白时兵
王琪
Yi-jun Li;Min Nie;Lin Pi;Shi-bing Bai;Qi Wang(State Key Laboratory of Polymer Materials Engineering,Polymer Research Institute,Sichuan University,Chengdu 610065)
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2021年第12期1547-1558,I0002,共13页
Acta Polymerica Sinica
基金
国家自然科学基金(基金号51127003,51873130,52003174)
中国工程院战略研究与咨询项目(项目号2021-XZ-6)资助.
关键词
旋转挤出流变仪
结构原理
多运动模式流变测试
功能聚合物微导管制备
Rotation-extrusion rheometer
Structure and principle
Multi-motion mode rheological test
Multifunctional polymer tube
