Test specimen made of smallest amounts of material

Micro test specimen

Are you in the development phase of a new material and want 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 generally for the development of microtechnical solutions, the production of micro test specimens offers a variety 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 as early as the test specimen production stage.
  • Various service properties, chemical resistance, bondability, etc. can be assessed.

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 variety of material properties.

Micro test specimens - Why?

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) for analyzing 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 (because of scaling effects only comparable with each other)

available test specimen geometries (micro test specimens in the KUZ molded parts catalog starting on page 16)

Material variety

The range of materials that can be processed includes:

  • Thermoplastics, including high-temperature materials and bioresorbable materials
  • Thermosets
  • Rubbers
  • Solid and liquid silicones

In addition, many experimental materials are possible, which can be processed in a variety of forms (e.g. as granules, powders or flakes).

Our services for micro test specimens in detail

  • Plasticizing and injection molding tests with small development batches (<50 gr).
  • Investigation of the suitability of the material for injection molding
  • Production of micro test specimens (available test specimen geometries in the molded parts catalogstarting on page 16)
  • Material characterization in accredited test laboratory

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Dr. Gábor Jüttner

Microplastics Technology