Product Description
Product Description
Product DescriptionT400 Torque Rheometer is a measuring system for studying the flow, plastcizing, heat and shear stability of polymers. This system consists of a platform and some function units, such as the mixer and extruder. The platform connected with a function unit can measure flow and compounding behaviors, critical processing parameters of temperature, pressure, torque and viscosity of polymers in the laboratory-requiring only small sample volume. This instrument, which is designed to a excellent system with high measuring precision, handling flexibility and testing reproducibility, has been widely applicate in science research, quality control and process experiment. The whole system is as follows: Specification 1. Platform The platform, linked with a external PC through industrial bus, provide all functionality for driving and controlling the function units and data record. It has mechanical and electrical interface matching with the mixer or extruder. We have two kinds of structures to match the function units with the platform. One is a simplified structure and another is a units’ movable structure which makes the function unit on a handcart to exchange it more easily. You can select a assembly to carry out testing tasks. The platform and its technical parameters are shown as Fig.1 and Tab.1. Parameters Motor Schneider imported servo system, 4.08kwReducer Imported from Germany Neugart, 1:15 or 1:20Speed range 0.1~200rpmSpeed accuracy 0.05%F.S.Torque0~230NmTorque accuracy0.1%F.S.Melt pressure range0.1~100MPaMelt pressure accuracy0.5%F.S.Temperature range0~400℃Temperature accuracy ±1℃Temperature channel 5 (4 channels for controlling temperature)Power supply 3phase, AC380V, 50Hz, 30A 2. Mixer The mixer is applied for testing of thermoplastics, thermosets, elastomers and other similar materials under the influence of temperature and shear. Some important information, such as fusion time, heat & shear stability of PVC, melt viscosity and cross linking property of polymers, can be obtained by this unit. It is equipped with 3-pieces composed electrical heating chambers and two exchangeable rotors. The chambers and rotors are made of 1Cr18Ni9Ti and 3Cr13 stainless steel respectively, and the rotors axle seal are made of Cu-C alloy to ensure perfect sealing. The Mixer, rotors and its parameters are shown as Fig.2 and Tab.2. Parameters Capacity 60ml200ml300mlMaterial 304L, importedMax. temperature 350℃Max. torque150Nm250Nm250NmRotors Roller (Banbury, Cam or Delta optional)Speed ratio of rotors3:2Heating zone3 channelsHeating modeElectirc heating with imported heating tubeTotal heating power1800w3600w4800w 3. Single screw plastic extruder and diesThe extruder connected with a die is used for testing of rheological characteristics and process ability of thermoplastics especially polyolefins, for producing test samples in the laboratory. There are 5 types of dies can be attached to the extruder. They are Rod capillary, Flat film, Rod, Pipe and Coated wire. These dies create Profiles of a defined geometry. Temperatures and melt pressure measurements along the extruder barrel and die enable the accurate definition of melt condition. A appropriate processing condition can be selected during the extrusion. Particularly, a powerful extrusion capillary rheometer can be constructed by using the extruder together with capillary dies. Rheological data, such as shear rate, shear stress and viscosity can be evaluated with Rabinowitsch and Bagley corrections. The screw, barrel and dies are made of 38CrMoAlA and 3Cr13 alloy steel. The extruder and dies and their parameters are shown as Tab.3. Parameters L:D25:1 or 28:1 or 30:1Screw diameter20Compression ratio2.1:1 for pellets,2.4:1 for powderMax. temperature350~400℃Heating power800w/channelHeating channel 4Temperature measuring channel 1DiesRod capillary Dia.: 1.0, 1.27, 2.0L:D: 20:1, 30:1, 40:1Pipe Inner dia.: 10, external dia.: 12.5Rod 5Coated wireCore: 1.5, die: 4.0Flat film50×1.8 (L×W) 4. Software and data sheetA set of software for the instrument is follows:(1) Platform software.(2) Mixer software.(3) Extruder software.(4) Viscosity software.
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