Characteristics for processability and flow behavior
Plastics exhibit viscoelastic behavior. This means that they exhibit neither properties of an ideal-elastic solid nor of an ideal-viscous liquid. The KUZ test laboratory has available various rheological testing and investigation methods. They are applied to characterize the flow behavior in the shear rate range relevant to processing and also to investigate the quiescent structure of the polymer at very small deformations or deformation rates.
- Melt Mass Flow Rate / Melt Volume Flow Rate (MFR / MVR)
- Melt rheology with the plate-plate / cone-plate rheometer ► in rotation or oscillation
- Dynamic mechanical analysis (DMA) under various loads ► torsional, tensile or flexural loading
- Solution viscosity (viscosity number - VZ) of various polymers ► PA, PET, PBT, PC, PMMA, PVC (K-value), PLA
- Online rheology at the injection molding machine
Statements on material behavior
- Flow behavior of plastics
- Stiffness and damping behavior
- Softening, melting, crystallization behavior
- Temperature positions of relaxation regions (e.g. glass transition temperature)
- Crosslinking behavior (curing) of elastomeric or duromeric systems
- Macromolecular degradation and build-up (e.g. post-condensation of PA)
- Flow behavior of the polymer melt in the injection molding process
Plastics science for career changers
You do not have a plastics-oriented education? We will provide you with knowledge about plastics, their characteristic values and common additives. Furthermore, you will receive an overview of plastics processing. Demonstrations on important test methods will deepen your knowledge. For more information on the agenda, how to get there, parking facilities and an insight into the script, please see our download box at the top right.
25.10. - 26.10.2023
Polymer analysis is still very important in the laboratory world. In this seminar, you will be introduced to two essential methods in detail: solution viscosity and contact angle measurement. Both cover relevant material properties and you will have the opportunity to have these techniques explained in theory and practice. The seminar is held in cooperation with LAUDA Scientific. You will be introduced to capillary viscometry for the determination of molecular parameters by means of the determination of the viscosity number, the IV-value and the K-value. In addition, you will be familiarized with the technique of contact angle measurement, and selected analytical methods will be presented. The emphasis is on very practical demonstrations of both techniques. Measurement series for automated dilution viscosity as well as gravimetric sample preparation will be examined and typical sources of error in everyday laboratory work will be pointed out. The Kunststoff-Zentrum Leipzig will provide an insight into the analytical methods used there.
Plastic detection made easy
You want to identify plastics without analytical equipment? With the help of a detection scheme, we show you how to identify plastics with simple means. For further investigations, we will introduce you to selected methods of instrumental analysis for plastics detection. For more information on the agenda, how to get there, parking facilities and an insight into the script, please see our download box on the top right.
14.11. - 15.11.2023
Molding and materials testing automotive
Do you need knowledge about molded part and material testing according to the standards of the automotive manufacturers? In addition to the basics for this testing, we show selected tests as examples. The special features and challenges of testing molded parts will also be addressed. For more information on the agenda, how to get there, parking options and an insight into the script, please see our download box at the top right.
29.11. - 30.11.2023
Rheology and thermal analysis
The description of the material properties of plastics is essential for the design of processing procedures and for quality assurance. Rheometric investigations can be used to characterize the flow and deformation behavior of thermoplastic polymers and to better understand their structure-viscosity behavior during processing. The test methods of thermal analysis open up the possibility of identifying relationships between processing conditions, microstructure and material properties of plastics. In this way, polymers can be identified and processing-related material damage can be detected. In this seminar, the theoretical fundamentals of rheology and thermal analysis are combined with practical demonstrations of the equipment in the laboratory and pilot plant. Concrete application examples from the practice of the accredited testing laboratory at the KUZ will be used to show what information can be obtained from the recorded measurement curves. For more information on the agenda, how to get there, parking facilities and an insight into the script, please see our download box at the top right.
Professional color measurement in the industry
Learn more about the basics and limitations of color detection as well as the goals and benefits of color measurement. We will explain suitable color measurement techniques and introduce you to colorimetric evaluation on products. For more information on the agenda, how to get there, parking facilities and an insight into the script, please see our download box at the top right.
Incoming goods inspection
What are the requirements for incoming goods inspection for thermoplastics? We will give you an overview of the most important test methods. This will enable you to actively apply this knowledge and carry out evaluations in operational practice. For more information on the agenda, how to get there, parking facilities and a look at the script, please see our download box at the top right.
The speed at which new trends lead to changing customer wishes and new products and innovations is constantly increasing. New developments of corresponding materials are expensive and not always necessary. To ensure that you remain flexible and can actively respond to changing requirements, the modification of existing plastics with appropriate additives is an option.
When it gets hot...
One of the characteristic features of plastics is their strongly temperature-dependent material properties. These depend on the type of plastic and the additives used (e.g. impact modifiers, reinforcing materials, etc.). By using polymer blends or radiation crosslinking, an additional increase in thermal resistance can be achieved.