聚合物螺杆塑化过程传热特性研究进展  

Research Development on Heat Transfer Characteristics of Polymer Screw Plasticizing Process

作　　者：鉴冉冉 谢鹏程[1] 杨卫民[1] 

机构地区：[1]北京化工大学机电工程学院,北京100029

出　　处：《塑料》2016年第4期69-72,共4页Plastics

基　　金：国家自然科学基金资助项目(No.51576012);中央高校基本科研业务费专项资金资助(YS1403)

摘　　要：综述了国内外学者在聚合物螺杆塑化加工过程中的传热特性及强化传热技术研究进展,并提出采用新兴的传热学理论——场协同理论,重新审视聚合物塑化过程对流传热的物理机制,即对流传热的性能不仅取决于流体速度、物性以及流体与壁面温差,还取决于流体速度场与热流场协同的程度。在相同的速度和温度边界条件下,他们的协同程度越好,换热强度越高,换热过程越优。这对指导螺杆塑化系统强化传热及塑化均匀性优化具有较高的参考价值。The research development of heat transfer characteristics and enhanced heat transfer technology in polymer screw plasticizing process are summarized. And the new theory of heat transfer, called field synergy,will be used to re-examine the physical mechanism of convection heat transfer of polymer plasticizing process, which has important guiding significance to enhance the heat transfer and plasticizing uniformity in the screw plasticizing system. The performance of convection heat transfer not only depends on the velocity of the fluid, physical properties, the temperature difference between fluid and wall, also depends the degree of synergy in the fluid velocity field and heat flux field. At the same velocity and temperature boundary conditions,the better extent of their synergy,the higher intensity of the heat transfer,the more excellent heat transfer process.

关 键 词：螺杆塑化 传热学 场协同 强化传热 塑化均匀性 

分 类 号：TK124[动力工程及工程热物理—工程热物理]