Thermal analysis

Analysing the thermal properties of polymeric materials

In thermal analysis, we combine the latest equipment with extensive experience. Depending on the task, we can use static as well as dynamic, highly-sensitive analysis methods. The wide range of methods enables professional support in the field of scientific and application-oriented research, product development, process and production control, as well as failure and damage analysis.

Contact: Dipl.-Chem.-Ing. Ute Kuhn
Phone: +49 921 55 74 75
E-mail: ute.kuhn@uni-bayreuth.de

The MCR 702 with MultiDrive technology with two independent air-bearing motors enables the following modes of measurement:

  • DMA in intensiv, bending, and compression with lower, air-bearing linear motor
  • DMA in torsion with upper, air-bearing rotary motor
  • Shear rheology with upper air-bearing rotary motor
  • Combination of linear drive and rotation motor in one test
  • SMT – Mode (“Separate Motor Transducer” )
  • EC – Mode: Operation with only one motor

Linear actuator for DMA in tension, bending, and compression

Force [N] 0.0005 – 40

Path amplitude oscillation [µm] +/- 0.01 – 4500

Temperature range [°C] -130 – 600 (convection oven)

Heating rate [K/min] 35

Cooling rate [K/min] 30

Rotary operation for DMA in torsion and rheology

Maximum angular frequency ω [rad/s] 628

Angular velocity [rad/s] 10-9 – 314

Maximum torque [mNm] 230

Min. torque rotation [nNm] 1

Min. torque oscillation [nNm] 0.5

Torque resolution [nNm] 0.1

Normal force range [N] 0.005 – 50

Normal force resolution [mN] 0.5

Temperature range [°C] -130 – 450 (convection oven)

Features
Plate-plate (PP25), solid-state fixture (SRF5), cantilever (CTL35), compression (PP25), three-point bending (TPB10/TPB20/TPB40)

Software
RheoCompass

Location: University of Bayreuth

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

Phone: +49 921 55 7475

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

Temperature range [°C] -150 … 500 (+/- 0,5)

Heating rate [C/min] 0.1 … 20

Test force range [N] 0.005 … 40 (+/- 0.0001)

Frequency range [Hz] 0.001- 1000 (+/- 0.001)

Dynamic length range [μm] 0.03 – 2000 (+/- 10 nm)

Sample collector
Tension, compression, shear, bending

Software
STARe

Location: University of Bayreuth

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

Phone: +49 921 55 7475

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

Maximum frequency [Hz] 100

Torque [mNm] 0.2 – 200

Maximum force [N] 150

Angle range [mrad] 0.05 – 500

Temperature range [°C] –150 … 600

Number of units 2

Features
Solid state terminals (rectangular geometry)

Measuring mode
Torsion

Software
TA Orchestrator

Location: University of Bayreuth

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

Phone: +49 921 55 7475

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

The Eplexor 500N combines dynamic mechanical thermal analysis with dynamic material testing

The system works with two independent drives for applying the static and dynamic load.

Electrodynamic oscillator system [N] 500

Dynamic force transducer [N] 150 and 500

Static strain [mm] up to 35

Dynamic strain [mm] +/- 1.5 and +/- 6

Temperature range [°C] -150 …. 500

Sample collector
Variable for compression, tension, bending

Testing
Ageing and immersion test for 3-point bending

Software
Evaluation frequency sweep, temperature sweep, time sweep, etc.

Software module

  • Determination of numerical master curves (statements on material behaviour)
  • Hysteresis analysis

Property of Neue Materialien Bayreuth GmbH
Location: University of Bayreuth

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

Phone: +49 921 55 7475

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

Temperature range [°C] -180 – 550 (+/- 0.1 )

Signal time constant [s] < 1.5

Measuring range [mW] +/- 500 (+/- 0.04µW)

Cooling rate (RCS) [°C/min] 100 (550 °C to 300 °C), 20 (550 °C to -20 °C), 2 (550 °C to -90 °C)

Cooling rate (LNCS) [°C/min] 100 (550 °C to 200 °C), 20 (550 °C to -100 °C), 2 (550 °C to -180 °C)

Purge gas
Nitrogen, Helium

Features
Sample changer for 50 samples

Software
Advantage Software

Location: University of Bayreuth

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

Phone: +49 921 55 7475

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

Temperature range [°C] -50 – 700 (+/- 0.2 )

Signal time constant [s] < 1.7

Measuring range [mW] +/- 350 (+/- 0.04µW)

Heating rate [°C/min] 0.02 – 300

Cooling rate [°C/min] 0.02 – 50

Purge gas
Nitrogen, oxygen, air

Features
SDTA sensor: ceramic sensor FRS5, sample changer for 34 samples

Software
STARe

Location: University of Bayreuth

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

Phone: +49 921 55 7475

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

Temperature range [°C] 25 – 600 (+/- 0.2 )

Resolution [µW] 0.03

Measuring range [mW] +/- 2.5 – +/- 250

Heating rate [°C/min] 0.001 – 300

Cooling rate [°C/min] 0.001 – 300

UV LED lamps [nm] 365 and 405

UV irradiance (365 nm) [mW/cm^2] 20 – 4400

UV irradiance (405 nm) [mW/cm^2] 35 – 2100

Purge gas
Inert, (other gases possible)

Chip sensor
All the necessary parts of a DSC installed (oven, sensor, and electronics).

Software
Chip DSC and Linseis TA evaluation

Location: University of Bayreuth

 

Contact: M.Sc. Florian Schönl

Phone: +49 921 55 7512

E-mail: florian.schoenl@uni-bayreuth.de

Pressure range [MPa] vacuum up to 15 (150 bar)

Pressure accuracy

  • 0%
  • ± 0.75

    Temperature range (depending on gas type) [°C] – 150 – 600 (at 1 bar), 90 – 600 (at 50 bar), 50 – 450 (at 150 bar)

    Heating rates [K/min] 0.01 – 100

    Cooling rates [K/min] 0.01 – 50

    Purge gas flow [ml/min] up to 500

    Test gas
    Nitrogen, carbon dioxide (other gases possible on request)

    Software
    Proteus®

    Location: University of Bayreuth

    Standort: Universität Bayreuth

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

    Phone: +49 921 55 7475

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

    The DEA allows viscosity tracking and determination of the degree of cure for thermosetting resin systems, adhesives, paints, and fibre composites, both in a laboratory environment and under real industrial conditions.

    Thermal and UV-induced curing systems can be investigated.

    Frequency [Hz] 1 mHz- 1 MHz

    Temperature range [°C] RT to 275

    Data points [ms] possible < 5

    Curing mechanism thermal, UV

    Location: University of Bayreuth

    Contact: M. Sc. Martin Demleitner

    Phone: +49 921 55 7476

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

    Temperature range [°C] 25 – 1100 (+/- 0.25 %)

    Weighing range [g] 5 (MT5)

    Resolution [µg] 1

    Signal time constant [s] 15

    Sample volume [μl] up to 900

    Purge gas
    Nitrogen, oxygen, air

    SDTA sensor
    FRS1 R-Typ (Pt-Pt-Rh 13 %)

    Features

    • Horizontal furnace construction with gas-tight measuring cell

    Software
    STARe

    Location: University of Bayreuth

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

    Phone: +49 921 55 7475

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

    Temperature range [°C] 25 – 1100

    Heating rates [K/min] 0.001 – 200

    Weighing range [mg] 2000 (MT5)

    Resolution [µg] 0.1

    Sample volume [μl] up to 85

    Temperature calibration
    c-DTA®, direct measurement of sample temperature, Curie Standards

    Purge gas
    Nitrogen, oxygen, air

    Features

    • Sample changer for 180 samples
    • AutoVac (automatic evacuation and filling with purge gas)
    • Vacuum-tight down to 10-2 mbar (1 Pa)
    • BeFlat® function (automatic correction of the baseline)

    Software
    Proteus®

    Location: University of Bayreuth

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

    Phone: +49 921 55 7475

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

    Thermomechanical analysis (TMA) determines dimensional changes of solids, liquids, or pasty materials under defined mechanical load as a function of temperature and/or time.

    Temperature range [°C] 70 … 1000

    Maximum sample dimensions [mm] 26 x 10 mm (cube), 26 x 1 x 4.7 mm (fibre, static), 26 x 0.35 x 4.7 mm (fibre, dynamic)

    Measuring accuracy [%] 0.1

    Temperature accuracy [°C] 1

    Measuring resolution [nm] 15

    Force range [N] 0.001 … 2

    Frequency [Hz] 0.01 … 2

    Measurement options

    • thermal expansion
    • creep
    • stress relaxation
    • storage, loss modulus
    • air, inert gas, reactive gas

    Software
    Advantage Software

    Location: University of Bayreuth

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

    Phone: +49 921 55 7475

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

    The FOX50 from Lasercomp works according to the stationary heat flow method. In addition to thermal conductivity, the thermal surface resistance of the sample can be determined using the two-thickness measuring method.

    Measuring range [W/mK] 0.1 – 10

    Precision [%] 3

    Temperature range [°C] 18 – 100 (+/- 0.02) (average temperature)

    Sample size [mm] Ø 60

    Sample thickness [mm] 1 – 25 (+/- 0.025)

    Software
    WinTherm 50

    Location: University of Bayreuth

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

    Phone: +49 921 55 7475

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

    The THB 100 works according to the “heating bridge method”, which belongs to the class of transient methods for measuring the thermal transport properties of substances.

    In contrast to the steady-state methods, thermal diffusivity can be determined at the same time as thermal conductivity.

    Thermal conductivity [W/mK] 0.02 – 30 (+/- 3%)

    Thermal diffusivity [mm2/s] 0.05 – 10 mm2/s (+/- 5%)

    Temperature [°C] 25 – 200

    Minimum sample size [mm] 4 x 4 x 4

    Maximum sample size unlimited

    Sensor type
    Insulated capton sensor (40 x 20 mm), Hot – Point – Sensor (4×4 mm)

    Software
    Linseis Thermoanalyse

    Location: University of Bayreuth

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

    Phone: +49 921 55 7475

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

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