白色/古铜色UPVC门窗异型材破碎料在SJZ60/125型锥形双螺杆挤出机上的生产

介绍了采用预塑化技术在锥形双螺杆挤出机上生产UPVC异型材的工艺过程.     

塑料异型材挤出的剪切塑化探讨

塑化问题是异型材挤出的首要问题，也是每一个挤出操作者和工程技术人员必须深入了解和把握的基本问题。目前塑料异型材生产多用锥形双螺杆挤出机，本文就针对该种机型从实用角度探讨异型材挤出中物料的塑化。     

异型材高速挤出关键技术的探讨

对挤出机、辅机、模具、配方等影响异型材高速挤出的关键技术作了一定的探讨。     

塑料挤出模头设计简析

挤出模是异型材挤出生产中的关键设备之一。挤出模主要由挤出模头和定型模组成，异型材挤出模头的主要功能就是将挤出机挤出的熔融塑料流束改变成截面近似于所需异型材截面的料坯。因此，在成型机组中，挤出机的挤出模头是非常重要的，它决定了型材的形状和型材制品质量的好坏，是挤出模设计中重点考虑问题之一。     

贺福岗：经济危机下的发展与创新

辛辛那提挤出技术有限公司总部位于维也纳。是SMS集团的一员。辛辛那提挤出公司是单双螺杆挤出成型机,以及管材、异型材和片材挤出机头和下游设备的领先制造商,旗下知名品牌有单螺杆挤出成型机“proton”、锥形双螺杆成型机“titan”和平行双螺杆挤出成型机“argos”等。     

贺福岗:经济危机下的发展与创新——辛辛那提挤出技术有限公司中国分公司海外销售经理

辛辛那提挤出技术有限公司总部位于维也纳,是SMS集团的一员。辛辛那提挤出公司是单双螺杆挤出成型机,以及管材、异型材和片材挤出机头和下游设备的领先制造商,旗下     

热塑性聚合物的反应挤出与双螺杆挤出机

叙述了反应挤出的基本原理，适用于反应挤出的化学反应类型及反应挤出设备。     

在K2004展览上，ARBURG展出新ALLROUNDER机型及设备的剖面图

在今年的“K”展上，这家奥地利维也纳的挤出专业公司将再次展示几种在管材和异型材挤出方面的具有先进性的新型产品。除了热销的Alpha和它的新“家族成员”外，展品集中围绕着KONOS锥形双螺杆挤出系列、木材纤维挤出和IRIS管材挤出模头进行展示。     

塑料异型材的挤出成型

概述塑料异型材的优点及应用实例，从原料选择与配方设计、挤出设备、制品断面设计及机头模具、挤出成型工艺等方面阐述了塑料异型材的挤出成型技术，介绍了低发泡、复合共挤出等其它异型材的成型技术，并展望了塑料异型材的发展趋势。     

反应挤出过程数值模拟进展

聚合物反应挤出过程不仅涉及挤出过程中流动、传热传质等化学工程问题,还必须考虑反应与挤出过程的耦合。为控制产物的分子量及其分布,需对聚合物在挤出机中流动行为进行考察。理论计算为反应挤出分析提供了优化方法,其中反应器流型模拟可用于操作优化,而数值计算方法可用于设计优化。本文分析了反应挤出过程的模拟方法与发展现状,评估了当前研发需求,并对今后发展方向做了展望。     

啮合异向双螺杆挤出过程熔体输送段常规螺纹元件3D流场分析

作者对啮合异向双螺杆挤出过程常规螺纹元件在充满熔体情况下的三维、等温、非牛顿流场进行FEM计算模拟的研究结果。所建物理模型包括螺槽区、啮合区和四个间隙 ;边界条件为真实的速度和压力边界条件 ;借助AN SYS有限元求解器进行流场计算 ,得到计算域的速度场、压力场和粘度场 ;利用以上流场计算结果 ,对常规螺纹元件的挤出特性和混合特性进行了分析     

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,评价各种类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该领域的新发展。     

计算流体动力学（CFD）及其软件包在双螺杆挤出中的应用

从数学模型、软件包的应用和数值模拟对象（即整根螺杆、熔体输送段、混合以及反应挤出等）三个方面介绍了计算流体动力学（CFD）及其软件包在双螺杆挤出中的应用,并讨论了双螺杆挤出加工数值模拟中尚特解决的问题。     

可视化挤出机促进了聚合物加工科学的研究

本文在分析了挤出理论研究过程中种种困难之后，着重介绍了可视化挤出技术。指出螺杆挤出机的最大特点是能将一系列化工单元过程在一台装备上来完成，具有节能、减少场地面积与操作人员、易于实现自动化从而降低了生产成本等优点。     

新型高分子材料配混挤出技术及成套装备开发

结合近年来在新型高分子材料配混挤出技术及装备开发方面的研究,介绍我国开发新型高分子材料配混挤出技术及装备所取得的成就,成套化技术及装备的发展,并对今后我国对配混挤出技术的开发提出了一些见解.     

螺杆组合对华科牌ABS产品的加工和力学性能的影响

本文主要介绍大庆华科股份有限公司生产的华科牌ABS系列产品过程中,双螺杆挤出机组的常用螺杆组合元件并对螺杆组合进行优化,研究了不同螺杆组合对华科牌改性ABS力学性能的影响,并设计出适合于改性ABS加工的螺杆组合。结果表明,采用适当的螺杆组合制得的改性ABS的力学性能得到显著提高     

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     

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.     

A study on new polymerization technology of styrene

The classic polymerization technology of polystyrene is a high‐cost and nonfriendly environmental technology. Furthermore, the weight‐average molecular weight of polystyrene is hard to enhance up to 400,000 in the classic polymerization technology. The disadvantages limit the growth rate of polystyrene. The solution for increasing the growth rate of polystyrene lies in new technology. The reactive extrusion process of polystyrene was studied in detail and the whole reactive extrusion process of polystyrene was obtained. By means of controlling the flow rate of styrene and the initiator and the screw rotational speed, samples of polystyrene with different molecular weights were synthesized by the twin‐screw extruder. The properties of synthesized polystyrene with different molecular weights were studied; the mechanic properties of polystyrene will increase with an increase of the weight average molecular weight of polystyrene. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 2130–2135, 2002