用途广泛的双螺杆挤出机

介绍了国内外对于双螺杆挤出机研究的最新动向。在理论上，人们可以更准确地计算挤出机的重要加工参数，评价各型双螺杆挤出机的优劣；在实验上，反应挤出技术代表了双螺杆挤出机开发的趋势，在此基础上的多螺杆技术是新发展。     

双螺杆挤出机在固相挤出工艺中的应用

双螺杆挤出机在固相挤出工艺中的应用吴三癸编译同向旋转啮合型双螺杆挤出机已经广泛应用于混料工艺。目前，双螺杆挤出技术又发展到一个全新的阶段：对于热塑性塑料，可在其熔点以下直接挤出成型。运用这种加工技术双螺杆挤出机可在如下新领域得到应用：塑料的机械脱水、...     

双螺杆挤出机及其选型

本文阐述双螺杆挤出机的分类、特点、国内双螺杆挤出机发展近况以及双螺杆挤出机选型原则。     

双螺杆挤出机与反应性挤出加工技术

本文论述了双螺杆挤出机与反应性挤出加工技术的特点，介绍了其在聚合反应、聚合物可控降解、聚合物接枝及聚合物改性等方面的应用。     

双螺杆挤出机与反应性挤出加工技术

本文论述了双螺杆挤出机与反应性挤出加工技术的特点,介绍了其在聚合反应、聚合物可控降解、聚合物接枝及聚合物改性等方面的应用。     

多功能双螺杆挤出机的开发与应用

介绍一种多功能双螺杆挤出机,成功地开发了双螺杆挤出机用传动箱,新型止推装置可替代传统的止推包。     

塑料挤出成型加工设备

介绍单、双螺杆挤出机的特征，主要结构与工作原理，以及典型挤出口模。     

高性能的门窗型材挤出机

通过不断优化螺轩形状，改进系统配置，奥地利辛辛那提挤出技术有限公司成功地开发出了ARGOS135平行双螺杆挤出机。该挤出机的挤出速度可高达6m/min，为生产商带来了巨大的收益。[编者按]     

挤出系统中的齿轮泵

齿轮泵通常与单螺杆式双螺杆挤出机一起使用，本文主要介绍齿轮泵系统和在挤出加工中的应用。     

聚合物反应性挤出技术开发动向

介绍双螺杆挤出机的最新进展以及反应性挤出生产线控制技术开发动向;详述粘度计在反应性挤出工艺中的应用.     

三聚氰胺泡沫双螺杆反应挤出机设计

针对三聚氰胺泡沫塑料连续化生产的工艺要求及技术难点,通过实验确定了三聚氰胺泡沫塑料的工业化生产流程,通过计算确定了三聚氰胺反应挤出发泡专用的反应型双螺杆挤出机的关键技术参数。为满足泡沫生产过程中黏度差较大组分的快速均化和反应热的快速移除等要求,专门设计了特殊的反应挤出机筒体和专用混合螺杆元件。通过实际工业化生产检验了流程设计及反应挤出机设计的可行性。     

往复式销钉螺杆挤出机混合机理概述

结合研制实践 ,分析了往复式销钉螺杆挤出机挤压系统的特点 ,阐述了该类机型的混合机理 ,并与常规的单、双螺杆挤出机作了比较     

双螺杆挤出机的进展及其应用

着重介绍日本新型双螺杆挤出机的最新研制和开发的机型,评述新型双螺杆挤出机的特点,特别是新近开发的SCR双螺杆挤出机、BIVOLAV双螺杆挤出机、HTM双螺杆挤出机、TEX双螺杆挤出机、高剪切型双螺杆挤出机、格子形叶的双螺杆挤出机、新AP型双螺杆挤出机的结构、性能及其应用,提出今后双螺杆挤出机发展前景及方向。     

Continuous polymerization of ω‐lauryl lactam in an intermeshing corotating twin‐screw extruder

This article describes the synthesis of poly(ω‐lauryl lactam) by a reactive extrusion process. Anionic ring‐opening polymerization was performed in an intermeshing corotating twin‐screw extruder. We investigated the evolution of conversion of ω‐lauryl lactam as a function of reaction time, screw speeds, different feed rates, and different screw configurations along the screw axis in a twin‐screw extruder. For comparison with continuous polymerization in a twin‐screw extruder, we studied polymerization in an internal mixer, which was considered a batch reactor. We found the final conversion of ω‐lauryl lactam made in a twin‐screw extruder was higher than in an internal mixer. Higher molecular weights are found at lower screw speeds and feed rates. Melt viscosities and mechanical properties of the polymers were measured. Residence time, molecular weights, and shear mixing have the main effect on the mechanical properties of products. The twin‐screw extruder performance was interpreted in terms of commercial software. It was found that twin‐screw extruder reaction rate was higher than those in the batch reactor and increased locally with screw speed and feed rate. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 1605–1620, 2005     

Theoretical model for non-intermeshing twin screw extruders

A simple theoretical model for flow in nonintermeshing twin screw extruders has been derived. The assumptions which in single screw extruders result in the “two parallel plates” model, in twin screw extruders result in the “three parallel plates” model. The flow rate equation can be expressed, for Newtonian fluids, in terms of drag and pressure flow terms, as in single screw extrusion theory, but each term is multiplied by a geometrical factor. This factor incorporates the effect of one screw on the drag and pressure flow terms of the other. The theoretical model was experimentally verified on a 1 inch diameter Bausano twin screw extruder.     

同向双螺杆挤出机在聚合物脱挥中的应用研究

综述了聚合物脱挥设备的分类和基本情况,并着重介绍了双螺杆挤出机在聚合物脱挥领域中的应用、优点、国内外发展概况及发展趋势等,同时在大量工业化应用的基础上提出了切实可行的同向双螺杆挤出机脱挥工艺,并详细分析了同向双螺杆挤出机主要零部件的设计要求和设计方法。     

耦合双槽单螺杆挤出机停留时间研究

提供了一种全新的分析挤出机停留时间的方法。在相同螺杆转速下,耦合双槽单螺杆挤出机物料的停留时间低于传统光滑机筒单螺杆挤出机和螺旋沟槽IKV单螺杆挤出机;耦合双槽单螺杆挤出机可以有效提高挤出机的熔融效率,实现高固体输送产量下的熔融效率与固体输送效率的匹配。     

Analysis and experimental evaluation of twin screw extruders

Twin screw extruders can he classified according to their geometrical configuration. The main distinction is made between intermeshing and nonintermeshing extruders. Another distinguishing characteristic is the sense of rotation. The most important characteristics of the various twin screw extruders are examined, with particular emphasis on the effect of screw geometry on the conveying characteristics. A brief review is given of the state of the art in theoretical analysis of twin screw extruders. Experiments with two lab scale, intermeshing twin screw extruders are described, one co- and one counterrotating. Results are presented on power consumption, residence time distribution, and mixing characteristics of the two extruders. The counterrotating extruder exhibits a narrower residence time distribution and better dispersive mixing capability. The corotating extruder showed a better distributive mixing capability. These results can be explained in terms of the conveying and mixing mechanisms in both extruders. The overall extruder performance seems to be dominated by the effect of the intenneshing region. Any realistic, theoretical analysis of twin screw extruders should be centered around the flow behavior and mixing characteristics of the intermeshing region. The corotating extruder appears to be best suited for melt blending operations, while the counterrotating extruder seems to be preferred in operations where solid fillers have to be dispersed in a polymer matrix.     

Evolution of Chemistry,Morphology and Rheology of Various Polymer Systems along a Twin‐Screw Extruder

Intermeshing twin‐screw extruders have been recently identified as useful in special application niches such as the extrusion of PVC dry blends (counter‐rotating machines) and compounding operations (co‐rotating machines). Thus, it is of interest to study the mechanical and/or chemical effects that occur along the screw axis of the extruders, since they will dictate the characteristics and performance of the final material. This work aims at illustrating the usefulness of a simple experimental tool recently developed for the study of the physical, chemical and morphological evolution along the extruder of polymer based systems, data being presented and discussed for a number of composites and blends.     

尼龙6的双螺杆反应挤出工艺

介绍了国内尼龙 6的双螺杆反应挤出工艺。通过己内酰胺阴离子型快速聚合 ,直接反应成型制取高性能尼龙 6 ,具有生产连续 ,周期短 ,产品性能好的优点。反应挤出生产的尼龙 6相对粘度可达 4 2～ 5 0 ,拉伸强度、弯曲强度、缺口冲击等性能均优于传统工艺生产的尼龙 6。对双螺杆反应挤出机的工艺要求及特点作了简介。