报废粘度计扭力管的再生

回转式自动粘度计是化工生产中重要的仪器设备,而扭力管是粘度计的心脏部件。该部件容易损坏,价格昂贵,每支四千余元,且制造困难,目前尚需进口。本厂使用日本进口自动粘度计一台,在运行过程中,当测量介质粘度波动过大、操作不当或其他原因,扭力管扭角达到2°的永久变形,粘度指示达到最大值,扭力管即失去检测作用,     

聚氯乙烯用自动粘度计

日本旭工程公司研制了一种粘度测定自动化,测定时间大幅度缩短,测定数据可靠性高的(毛细管式)自动粘度计。该种FAV—P型自动粘度计,除粘度管、起始温调方式、冲洗方式改进和测定时间缩短外,测定方式自动化,而且一台装置可同时测定数种粘度,测定准确度高。该种自动粘度计可用于聚氯乙烯、聚丙烯、聚     

石油产品运动粘度测定的影响因素

文章对石油产品运动粘度测定的影响因素进行了分析,探讨了计量器具、试验浴的温度、试油流经粘度计的时间、粘度计的位置等因素,通过试验找到了影响粘度测定的主要因素是毛细管粘度计常数和温度计示值以及设备的控温精度,其次是试验人员的操作及仪器的安装。并分析了这些影响因素的应对措施。     

关于磁浆流变特性及粘度测量方法的研究

<正> 引言目前国内磁带工业中并行着两种粘度测量方法:一种是传统的运动粘度测量法,使用涂—4孔式粘度计;一种是新式的动力粘度测量法,使用旋转粘度计。本文从分析磁浆的流变特性入手,对这两种粘度计的异同、测量结果     

基于旋转粘度计法的水煤浆流变关系修正

对兖州煤水煤浆进行流变特性试验研究,将管流法、旋转粘度计法得出的流变关系进行比对和分析。以测量结果更适合工程运用的管流法试验数据为基准,对旋转粘度计法所得的结果进行修正,首次得出基于旋转粘度计法的水煤浆流变关系的修正系数经验公式,较好的达到运用操作简单的旋转粘度计法得到适合工程运用的水煤浆流变关系的目的。     

GB/T265测定误差分析

液体化工产品运动粘度测试中,除了主要影响因素温度、流动时间和粘度计毛细管常数之外,测定过程中粘度计倾斜和样品量对试样运动粘度的影响也比较重要,从这五个方面严格控制可得到较为准确的测定结果。     

NMP精制润滑油运动粘度测定的影响因素

对NMP精制润滑油运动粘度测定的影响因素进行研究.考察流动时间,测量温度,粘度计倾斜角度,吸油时粘度计中有无气泡,试油中有无杂质、水分等条件.结果表明,测试油品的运动粘度要按照试验方法进行测试,准确分析各种影响因素,才能保证试验结果的准确性.     

气—固流化床床层粘度的测量

<正> 一、概述石油化工所用催化剂颗粒在流化输送过程中,经常发生流动故障,为了表征气-固体系统流动性能,需要使用一个能够描述气-固两相系统内摩擦力大小,同时又易于检测的物理置,这就是气-固流化床床层粘度的概念。只有测量了床层粘度,才能对处于不同操作条件下的颗粒群流动性能进行定量评价。对流化床粘度的测量工作报导较少。Mathson 等、古川等报导过使用桨式Stormer 粘度计测量流化床的床层粘度。由于桨式转子会改变流化床颗粒运动的结构,故其结果只是定性的。Kramers采用旋转双球式粘度计,其实验结果亦是定性的。     

75t/h干熄焦一次除尘实现自动排灰的改进

分析了75t/h干熄焦一次除尘自动排灰存在的问题及原因,介绍了操作和程序上的一系列改进,改进后一次除尘实现自动排灰,排灰效率大大提高。     

涂料粘度测定—蔡恩粘度计法

介绍了蔡恩粘度计的构造、操作、校正及其应用。     

Automatic recording capillary viscosimeter with dilution

A capillary viscosimeter with automatic determination and recording of flow times of liquids up to 200°C is described. This viscosimeter, which is specially suited for studies of polymeric solutions, includes an automatic dilution system and determines intrinsic viscosity with a precision better than 0.01%.     

Automatized photogoniodiffusometer and coupling with automatized viscosimeter

Summary We describe an automatized light scattering apparatus and its coupling with automatic viscosimeter and give some applications.The laser technique development motivated several workers to construct various kinds of light scattering apparatus (1,2). Nevertheless, at our knwledge, a entirely automatized device with automatic dilution which avoids many fastidious handling has never been proposed. Moreover, the usual characterization of a polymer sample often requires, not only his molecular weight M_w and radius of gyration RG but also its intrinsic viscosity [n]. One of us (3) has, some years ago, constructed an automatic viscosimeter. Thus, it was natural to associate, in a same apparatus, the two types of technique, in order to determine, in a same experiment requiring only the preparation of one solution, the principal molecular parameters characterizing a polymer sample and its interaction with a given solvent.The authors are gratefull to Dr. C. Strazielle for the measurements on the Fica 50 apparatus and to M. J. Simonin for his technical assistance.     

异形喷丝帽微孔的全自动检测仪的技术控制

运用机器视觉技术开发了一种可连续对6块异形喷丝帽微孔进行检测的全自动检测仪。提出了一种适用喷丝帽的三点弧面对焦方法和全自动扫描算法,相应解决了镜头在换圈时的对焦问题和不同喷丝帽微孔分布的自动走位问题。该检测仪能够实现对异形喷丝帽微孔的高精度、自动化检测,同时提高了检测效率。检测精度小于1μm,检测速率为2 s/孔,可以连续监控喷丝孔的使用情况并及时查出运行故障。     

自动粘度仪与手动粘度仪在油品分析中的应用比较

介绍了CAV2000A动粘度仪的工作原理及测定方法,利用CAV2000自动粘度仪对润滑油、柴油、燃料油等石油产品进行运动粘度的测定,并将测定结果与现行粘度测试标准（GB／T265—1988、GB／T11137-1989）进行比较,结果表明,CAV2000自动粘度仪操作简便快速,重复性好,精度在标准方法允许的误差范围内。     

Morphologiebildungs- und dispergiermechanismen bei der herstellung und verarbeitung von polymer-blends aus acrylnitril-butadien-styrol-(ABS)- bzw. Styrol-acrylnitril-(SAN)-copolymerisaten mit thermoplastischem polyurethan (TPU)

ABS/TPU- und SAN/TPU-blends were investigated on the basis of the analysis of viscoelastic behaviour of the components for characterization of the formation of morphology in melt mixing processes. Blends mixed in a laboratory kneeder and extruded from a high pressure capillary viscosimeter under definite conditions were characterized concerning their phase morphology by transmission electron microscopy. The types of morphology predicted by the help of rheological analysis could be confirmed by electron micrographs and quantitative analysis of morphology. It becomes evident, that the ratio of viscosity of the components has the primary influence on the formation of morphology in the blends. But also thermomechanically induced molecular destruction processes and thermodynamic interactions as well as connecting crystallisation conditions for the TPU-phase are not negligible with regard to resulting phase morphology.     

Vollautomatisierte Einwaage flüssiger Substanzen mittels Laborroboter

Taking the mass of a sample is a routine operation in the laboratory, which is often repeated during the collection of data. In chemical industry this operation is often done manually. In this work a procedure for fully automatic weighing of liquid substances with a laboratory robot is presented. To demonstrate the functionality of the laboratory robot and to show a possible application, the laboratory robot was used to create test samples for the calibration of a gas chromatograph. The achieved accuracy is greater than that of careful manual weighing. The presented method allows handling of liquids commonly used in the laboratory.     

化纤企业纺丝作业中自动铲板机的运用

介绍了自动铲板机的工作原理和工作步骤。从设备的工作压力、工作流程、日常刀具维护三个影响因素进行调整,调整后自动铲板机能部分代替人工作业,颠覆了纺丝作业传统的人工模式,减少了人工操作造成的铲板质量差异,产生了比较可观的经济效益。另外指出了自动铲板机存在的缺点并提出了改进措施。     

水电站自动化系统技术改造设计

为了提高六甲水电站的自动化运行水平,对电站的控制系统进行了技术改造。介绍了六甲水电站自动化系统改造应用经验和体会、系统技术特点、运行情况和效益。     

A device for the automatic continuous measurement of the dynamic viscosity of polymers

Conclusions A continuously acting instrument with compensation for temperature and flow rate has been developed for measuring the dynamic viscosity of a fibre-forming polymer.The VR-2030 viscosimeter has recommended itself in operation by its reliable, stable, and accurate readings and by satisfactory metrological assurance.Translated from Khimicheskie Volokna, No. 3, pp. 48–49, May–June, 1983.     

Fully Automated Weighing of Liquid Substances with a Laboratory Robot

Taking the mass of a sample is a routine operation in laboratories which is frequently repeated during data collection. In chemical industries, this operation is often done manually. A procedure for fully automatic weighing of liquid substances with a laboratory robot is presented. To demonstrate its functionality and a possible application, the laboratory robot was used to create test samples for calibration of a gas chromatograph. The achieved accuracy is greater than that of careful manual weighing. The presented method facilitates the handling of most liquids commonly used in laboratories.