Our RHEOGRAPHES 25, 50, 75 and 120 are user-friendly high-pressure capillary rheometers with a further extended shear rate range, higher test load (25, 50, 75 and 120 kN) and a wide range of add-ons.
Capillary Rheometer RG25-120
The series of GÖTTFERT high pressure capillary rheometers is available with different test loads of 25, 50, 75 or 120 kN. The stronger versions such as RG75 or RG120 can achieve extremely high shear rates even with very high viscosity test material. Due to a unique and large variety of modular add-ons not otherwise available on the market, other material properties can be tested in addition to viscosity. It is possible to characterize all process-relevant material behaviors.
Good to know
All high-pressure capillary rheometers of this series are available as single-, twin- or triple-barrel versions with different test barrel diameters. We also offer a large number of capillaries and other options that make it possible to adapt the machine perfectly to your application.
Specification
CUSTOMIZED TO YOUR REQUIREMENTS
Our modular add-ons also offer an extended option for characterizing materials.
Measuring first normal stress difference at high shear rates via capillary rheometer.
除了PVT500以外，高特福还提供可以做为毛细管流变仪附加组件的测试单元来来测试PVT,该测量可以表征材料温度，比体积和压力之间的特性关系。
我们新开发的最大速度可以达到2000m/min的牵引装置特别适合于纤维级材料的特性描述，此系统可以以一个恒定加速度的或者分步恒速的模式来运行，通过一个平稳运行，有防粘涂层的滚轮来提供拉力，滚轮和一个高灵敏度的力传感器连接。
在塑料的生产和加工过程中，聚合物熔体的拉伸性能是至关重要的。
已经获得专利的RHEOTENS 方法被证实是一种极其灵敏的测量原理，能够提供高重复性的测试结果，甚至可以显示最小的批次波动。
除了已经具有的恒速和恒定加速的模式外，现在还具有指数加速度的模式，根据Wagner教授的说法，拉伸粘度函数的确定是RHEOTHENS不可或缺的一部分。
RHEOTENS非常适合对一些挤出或成膜材料的加工性能进行测试。
CONTIFEED是一种微型挤出机，直接和毛细管流变仪的料筒相连，由于样品停留的时间缩短，这种附加装置特别适用于热不稳定材料，在挤出机中进行预剪切塑化，使测量过程与生产过程十分接近。
CONTIFEED的优点:
El cabezal de medición Shark Skin se monta en la parte inferior del canal en lugar de la boquilla. Con esta opción se puede medir de forma exacta con qué velocidades de cizalla críticas se producen homogeneidades de la superficie.
热导率传感器的安装方式与标准活塞相同。在实验过程中，料筒的底部是被密封的。固体或者熔体的热导率测量是在相同条件下进行的。
聚合物的粘度也取决于全部的压力情况，反向压力测试安装在口模后面，在口模出口处产生一个反向的压力，这个反向的压力由一个附加的压力传感器测量
测量头安装在口模下方，口模胀大和粘度测试可以同时进行。
PVT isobaric
This procedure is standardized in ISO 17744 for piston operated instruments. Isobaric PVT measurements are performed at constant pressure...
PVT isothermal
In isothermal PVT measurement, the measurement process starts at room temperature after the material is filled at melt temperature and...
Bagley Correction
The Bagley correction is needed to calculate the inlet pressure drop when round hole capillaries...
Weißenberg-Rabinowitsch Correction
Due to shear thinning of polymer melts with pseudoplastic flow behaviour a strong flection of the...
Multi-Load Schmelzindex Messungen
Schmelzindex-Prüfgeräte werden insbesondere in der Qualitätskontrolle von Kunststoffherstellern wie auch Verarbeitern eingesetzt...
Melt Elasticity/Strength
The melt strength (elasticity) is determined by withdrawing an extruded strand of capillary rheometer...
Die Swell Measurement
The Die Swell measurement is one of many available add-ons for the series of GOETTFERT capillary rheometers...
Counterpressure chamber
The counter pressure chamber, which offered by GÖTTFERT as an optional Add-on ...
Flow Instabilities (Shark-Skin)
The Shark-Skin effect occurs during the extrusion of plastics, elastomers or food and manifests...
Thermal Conductivity
The measurement of the thermal conductivity is carried out by means of a probe...
Extensional viscosity (Cogswell Modell)
The extensional viscosity can be calculated with measured data of a capillary rheometer...
