机筒沟槽和螺杆螺槽耦合作用下的熔融理论研究  

Research on Melting Mechanism under the Coupled Action of Barrel Groove and Screw Channel

作　　者：贾明印[1] 黄勇[1] 余斌[1] 薛平[2] 金晓明[3] 

机构地区：[1]新疆工程学院,新疆乌鲁木齐830091 [2]北京化工大学,北京100029 [3]北京联合大学,北京100101

出　　处：《塑料科技》2015年第10期39-43,共5页Plastics Science and Technology

基　　金：新疆维吾尔自治区自然科学基金项目(2014211A022)

摘　　要：对固体输送段和熔融段机筒开设螺旋沟槽的单螺杆挤出机,构建了基于反压缩比分离型螺杆和正压缩比沟槽机筒的耦合双槽熔融模型,并通过液压剖分式单螺杆挤出机实验平台对耦合双槽熔融模型进行了验证。结果表明:对于沟槽机筒单螺杆挤出机,利用熔融段沟槽固体塞和螺杆螺槽固体塞在机筒沟槽和螺杆螺槽界面处发生层间剪切产生的大量内摩擦热来实现物料的高效熔融是可行的;实验结果和理论模型相一致;螺杆转速对熔融长度影响不大,而螺杆结构参数则对其影响较大。Based on the single screw extruder with helical grooved barrel in solid-conveying zone and melting zone, a novel coupled double channel melting model was established by combining the positive compression grooved barrel and the anti-compression screw channel. The model was verified by the clamshell type single screw extruder platform. The results show that it was feasible to melt the polymer efficiently by the internal friction heat, which generated from the interfacial shear of the solids in the interface between barrel groove and screw channel. The experimental results and theoretical models were consistent. The effect of the structural parameters of the screw on the melting length was significant while screw speed was not obvious.

关 键 词：低密度聚乙烯 螺旋沟槽机筒 单螺杆挤出机 熔融 

分 类 号：TQ320.52[化学工程—合成树脂塑料工业]