Further analytics

Exploring more properties of polymeric materials

In addition to the characterisation methods described below, we have a range of other methods at our disposal through our university network and our cooperation with Neue Materialien Bayreuth GmbH. This allows us to react very flexibly to new questions in order to advance ongoing research projects with necessary effectiveness.

Contact: M.Sc. Tobias Standau
Phone: +49 921 55 7440
E-mail: tobias.standau@uni-bayreuth.de

The quality of plastic products crucially depends on the water content of the raw material during processing.

To determine the water content of plastics according to ISO 15512 (method B), we use the automatic Karl Fischer C30S coulometer with the Stromboli oven sample changer for up to 14 samples.

The coulometer offers a very precise determination of water content (up to 5 %) using only very small sample weights. In addition, the analysis of a wide variety of samples such as liquids, powders, granulates, foam beads, etc. is possible.

The analysis is carried out in the following steps:

  • Heating the sample (blank sample)
  • Transfer of escaping water into the measuring cell
  • Titration of transferred water
  • Determination of water content via the mass of used titration solution

Sample weight [g] 0.1 – 10

Water content [ppm] 1 – 50,000

Oven temperature [°C] 50 – 300

Sample number
Up to 14 per series

Type of sample
Liquid, powder, granulate, foam etc.

Other features
Individual method design

Location: University of Bayreuth

Contact: M.Sc. Alper Aksit

Phone: +49 921 55 7472

E-mail: alper.aksit@uni-bayreuth.de

Measuring geometry

Measuring aperture diameter [mm] >25.4

Measuring field diameter [mm] 18

Colour sensitivity
in spectral adjustment to CIE standard spectral value function y

standard illuminant CIE-C

Measuring ranges
Transmission [%] 0-100

Haze [%] 0-100

Clarity [%] 0-100

Location: University of Bayreuth

Contact: M.Sc. Merve Aksit

Phone: +49 921 55 7460

E-mail: merve.aksit@uni-bayreuth.de

For measuring the open cell and compressibility of foams according to ASTM D-2856. Single or multiple measurements with averaging possible. Correction option for open cells on cut surfaces.

3 sample cells [cm3] 10, 50, 135

Gas pressure [psi] 2 to 20 (approx. 0,14 to 1,48 bar) above normal pressure

Location: University of Bayreuth

Contact: M.Sc. Tobias Standau

Phone: +49 921 55 7440

E-mail: tobias.standau@uni-bayreuth.de

The Agilent E4991A RF impedance meter provides a total solution for making highly accurate, reproducible, and stable measurements of SMD components and dielectric/magnetic materials.

Frequency range 1 MHz … 3 GHz

Temperature range [°C] -50 … 180

Measuring accuracy [°C] ± 0.8 %

Measurement types
Permittivity, impedance

Sample
Cubes (D > 0.3 mm)

Location: University of Bayreuth

Contact: M.Sc. Bubmann

Phone: +49 921 55 7472

E-mail: tobias.bubmann@uni-bayreuth.de

Total capacity [l] 2.5

Speeds [l/min] up to 1500

Power [kW] 2.2

Mixing tool speed [l/min] 400 – 4000

Features
Mixing tank with double jacket for cooling with water, cooling jacket with 2 bar water pressure.

Year of manufacture
2002

Location: Neue Materialien Bayreuth GmbH

 

Contact: Markus Schirmer

Phone: +49 921 55 7480

E-mail: markus.schirmer@uni-bayreuth.de

Permeation

The following options are available for measuring the permeability of films and packaging:

  • Measurement of oxygen transmission
  • Measurement of water vapour transmission
  • Measurement of carbon dioxide transmission
  • Films certified according to the NIST guidelines are available for calibrating devices.

 

OX-TRAN ® 2/21

The permeation measuring device OX-TRAN 2/21 with 2 measuring cells measures the transmission of oxygen and thus the barriers of flat materials and packaging. The coulometric sensor used in the modules is an absolute oxygen sensor. This means that this patented sensor does not need to be calibrated to measure permeation.

PERMATRAN-C ® 4/41

The PERMATRAN-C 4/41 with 2 measuring cells measures the transmission of carbon dioxide and thus the barriers of flat materials and packaging.

PERMATRAN-W ® 3/33

The PERMATRAN-W 3/33 with 2 measuring cells measures the transmission of water vapour and thus the barriers of flat materials and packaging.

OX-TRAN ® 2/21

Carrier gas nitrogen (N2)

Test gas oxygen (O2)

Temperature range [°C] 5 – 50 ± 0.5

Humidity [%] 35 to 90 RH ± 3 RH, 0 RH

Measuring range
Flat materials 0.005 – 155,000 cm3/m²/day, packaging 0.00005 – 1.550 cm3/pckg/day

PERMATRAN-C ® 4/41

Carrier gas nitrogen (N2)

Test gas carbon dioxide (CO2)

Temperature range [°C] 5 – 50 ± 0.5

Measuring range
Flat materials 1 – 800,000 cm3/m²/day, packaging 0.005 – 775 cm3/pckg/day

PERMATRAN-W ® 3/33

Carrier gas nitrogen (N2)

Test gas water vapour (H2O)

Temperature range [°C] 5 – 50 ± 0.5

Humidity [%] 35 to 90 RH ± 3 RH, 100 % RH (HPLC water)

Measuring range
Flat materials 0.005 – 1000 g/m²/day, packaging 0.00003 – 0.5 g/pckg/daya

Location: University of Bayreuth

 

Contact: Dipl.-Chem.-Ing. Ute Kuhn

Phone: +49 921 55 7475

E-mail: ute.kuhn@uni-bayreuth.de

Pressure

  • 0%
  • 3 – 10

    Capacity [l/min] 300 – 1740

    Blasting nozzle [mm] 6 – 10

    Year of manufacture
    2002

    Location: University of Bayreuth

     

    Contact: Sebastian Gröschel

    Phone: +49 921 55 7461

    E-mail: sebastian.groeschel@uni-bayreuth.de

    In addition to the standard weighing procedure, the AG245 analytical balance by Mettler Toledo is particularly well suited for piece counting, percentage weighing, formulation, and dynamic weight recording. With the help of the density kit for AG balances, buoyancy measurements, and thus density determinations according to the Archimedes principle, are also possible.

    Readability [mg] 0.1mg/0.01

    Maximum load [g] 210/41

    Repeatability (s) [mg] 0.1/0.02

    Linearity [mg] ±0.2/±0.03

    Settling time [s] 3/15

    Temperature drift [ppm/°C] ±1.5

    Long-term drift [%] ±0.003

    Location: University of Bayreuth

    Contact: M. Sc. Nick Weingart

    Phone: +49 921 55 7490

    E-mail: nick.weingart@uni-bayreuth.de

    max. frequency in echo mode [MHz] 16 in water

    max. frequency in through-sound mode [kHz] 120 in air

    max. amplification [dB] 90

    min. defect size [mm] 5 (in air)

    0.25 (in water)

    Testing options
    A-, B- and C-scan, 3D scan

    Software for quantitative evaluation of delamination areas

    Location: University of Bayreuth

    Contact: M. Sc. Martin Demleitner

    Phone: +49 921 55 74 76

    E-mail: martin.demleitner@uni-bayreuth.de

    max. frequency in echo mode [MHz] 16 in water

    max. frequency in through-transmission mode [kHz] 120 in air

    max. amplification [dB] 90

    min. defect size [mm] 5 (in air)

    0.25 (in water)

    Testing options
    A-, B- and C-scan, 3D scan

    Software for quantitative evaluation of delamination areas

    Location: University of Bayreuth

    Contact: M. Sc. Martin Demleitner

    Phone: +49 921 55 74 76

    E-mail: martin.demleitner@uni-bayreuth.de

    FURTHER EQUIPMENT AND TECHNOLOGY

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