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Faculty of Textile Engineering Labs

Laboratory of Thermal, Thermomechanical and Electrical Properties | Ft.Tul.cz

THERMO

The main objectives and activities

  • Study of structural parameters of textiles and materials using thermal analysis methods,
  • Identification of the material,
  • Tracking of mechanical, structural and reaction properties of materials in relation to the thermal load.

Specific devices and outcomes

  • Differential Scanning Calorimetry (DSC)
  • Thermomechanical Analysis (TMA)
  • Dynamic-Mechanical Analysis (DMA)
  • Thermogravimetry (TGA)

Specialization of the laboratory

  • Measurement of transition temperature (Melting, Glass transition, Crystallization),
  • Determining the degree of crystallinity and thermal coloration,
  • Evaluation of enthalpy of thaw, enthalpy networking and curing, reaction kinetics and efficiency of antioxidants,
  • Analysis of copolymers and blends of polymers,
  • Thermal and oxidative stability,
  • Effectiveness of fire retardants,
  • Volatilization of low molecular weight, polycondensation product, solvents, determination of fillers,
  • Coefficient of thermal expansion,
  • Thermo-mechanical properties, tensile modulus and shear, real and imaginary component module, loss angle.

ELECTRO

The main objectives and activities

  • Modification of conducting fibers for new uses,
  • Development of textile sensors and sensors suitable for use in textiles,
  • Modeling of electrical properties of textile fibers using computer assisted designing,
  • Development of evaluation methods of anisotropy electrical properties of materials.

Specific devices and outcomes

  • Circumferential analyzers (Rohde & Schwarz) - preparation of samples for measurement of electromagnetic shielding (textile, sandwich structures, composite materials, etc.),
  • Impedance / material analyzer – Agilent E4991A + Dielectric material test fixture – Agilent 16453A (measurement of dielectric permittivity in a range 1 MHz - 1 GHz),
  • Universal frequency counter – Agilent 53131A,
  • Resistance meter – HP 4339B + extenders on measuring volume resistivity, surface resistivity, of surface directional resistivity,
  • Stat – charge FD-28 (for measurement of electrostatic hubs),
  • Polystat (for measurement of potential of the sample),
  • LCR meter–measurement of resistance, capacitance and inductance,
  • TEPAO MMETP E6-13A (for resistance measurement),
  • Handheld meter for measurement of microwave radiation leakage.

Specialization of the laboratory

  • Measurement and analysis of electrical properties of textile structures,
  • Development of special materials with the use of conducting fibers.
    Hodnoceny jsou parametry materiálů
  • Surface resistivity of materials [Ω] and bulk resistivity materials of [Ω.m],
  • Anisotropy of surface and volume resistivity of materials,
  • Capacity of materials (including dependence on deformation of test material),
  • Measuring the percolation threshold of conductive material with the proportion of conductive phase,
  • Measuring the polarity and amount of charge generated by rubbing two materials and its size in the range of 3-30 kV.cm-1,
  • Surface potential of insulators,
  • Permittivity of materials and electromagnetic shielding of materials.
Laboratory of Thermal, Thermomechanical and Electrical Properties