Test specimen made of smallest amounts of material
Micro test specimen
Are you developing a new material and need to test it quickly and efficiently? With injection-molded micro test specimens, even small quantities of plastic can be tested under very precise process specifications. For material development and the development of micro-engineered solutions in general, the production of micro test specimens offers a number of advantages.
- A wide variety of test specimens with different geometries can be produced from less than 50 g of material.
- Very cost-intensive materials can be investigated efficiently and cost-effectively.
- Materials from a laboratory production can be comparatively examined in the accredited test laboratory
- Recommendations for injection molding technology can be efficiently and quickly derived from the production of the specimens.
- Various performance chracteristics, chemical resistance, bondability, etc. can be evaluated.
The "formicaPlast" micro injection molding machine developed at the KUZ allows the processing of extremely small shot weights, even for materials that are sensitive to dwell time. Injection molding tools and test fixtures for a wide variety of test specimen geometries are already available for characterizing a wide range of material properties.
Characterization of the injection molded material
The following test methods, for example, are available for selection:
- Differential scanning calorimetry (DSC) to evaluate the melting behavior and determine the glass transition temperature
- Thermomechanical Analysis (TMA) to determine the linear thermal expansion coefficient
- Dynamic Mechanical Analysis (DMA) to analyze the mechanical behavior under defined dynamic loads
- Determination of microhardness on injection molded micro test panels at room temperature
- Tensile test on micro test specimens 1/12 to determine mechanical properties (only comparable to each other due to scalling effects)
available test specimen geometries(pdf) (micro test specimens in the KUZ molded parts catalog starting on page 16)
Variety of Materials
The range of materials that can be processed includes:
- Thermoplastics, including high-temperature materials and bioresorbable materials
- Solid and liquid silicones
In addition, many experimental materials can be processed in a variety of forms (e.g. granules, powders or flakes).
- Plastification and injection molding trails with small development batches (<50 gr).
- Evaluation of material suitability for injection molding
- Production of micro test specimens (available test specimen geometries in the catalog of test specimens (pdf, starting on page 16)
- Material characterization in an accredited testing laboratory
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.
Rapid feedback for products and processes
The testing laboratory at the KUZ is an independent materials laboratory for plastics testing. In the context of developments and optimizations, a wide variety of characteristic values are required for the material and processing behavior of plastics, which the test laboratory can provide.