Plastics - Insulator or conductor, as required
Plastic components combine an increasing number of functions in electrotechnical applications. Functionalized plastic components include insulators, heat conducting elements and user interfaces. To ensure the intended function and safety of the application, various electrical tests are required prior to use. The KUZ addresses oneself to the testing of functionalized plastic components and to the further development of various electrical testing methods in application-oriented research projects as well.
- Dielectric strength (high voltage tests)
The application of plastics as insulators requires the determination of their dielectric strength. The dielectric strength of materials is already measured in the accredited test laboratory up to 70 kV DC and up to 50 kV AC in accordance with DIN EN 60243, however, these values are far from being at the end of our research. Our focus is on the suitability of modern highly filled plastics as thermal conductors and electrical insulators. Furthermore, the dielectric strength of entire components and assemblies can be investigated.
- Volume and surface resistance
Conductive or non-conductive? Different functions require different material properties. The current seeks its shotest path through the component and along its surface resistance, respectively. The KUZ offers testing of these properties according to DIN EN 62631-3-1. Conductive materials can also be investigated with our equipment. Here the standard DIN EN ISO 3915 is applied.
Our research focuses on the behavior of highly functionalized sandwich components with migrating antistatic agents.
- Tracking resistance
The creepage resistance is the CTI value (comparative number of creepage) or the PTI value (test number of creepage). This can be tested up to 600 V according to DIN EN 60112. In thigh-voltage applications such as electromobility or in the field of regenerative energies, the use pf plastics as insulators requires to overcome this limitation. Therefore, we are working on the development and qualification of a tracking resistance test device up to 950 V within our research. Furthermore, the effects of the high voltages are being investigated as well. As a result, charging infrastructures made of high-tech plastics, for example, can be tested in a more application-oriented manner.
- Dielectric properties
In order to assess the suitability of plastics in the field of cable sheathing, housings or in capacitors, the dielectric constant or dielectric loss factor of the material is often used. These values describe the permeability of electromagnetic fields through the plastic. In the KUZ, the dielectric values of plate-shaped sample material can be determined in a frequency range from 20 Hz to 15 MHz at room temperature according to DIN EN IEC 62631-2-1.
- Flammability tests of plastic housings
In addition to the task of insulating electrical equipment, plastics also protect against flames caused by electrical malfunctions or short circuits. Flames may break though outside the housing in the event of fires. For this purpose, the KUZ test laboratory offers fire tests according to UL94 (or DIN EN 60695-11-10) for applications in the E&E sector, as well as glow wire tests according to DIN EN 60695-2-11/12/13, among others.
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.
Does your component actually hold up?
In component design, one starts with the stiffness and strength of the product. Therefore, mechanical properties are also an important part of plastics testing.
Your bright idea... but please not flammable
Most plastics are flammable by nature. To ensure that they can nevertheless be used in areas where flame protection is required, the use of flame retardants and the verification of their burning behavior by means of various fire tests have become established.