PHYsiques : Physical properties of polymer materials
Dielectric, conductivity, multifunctionality
Molecular dynamics under electrical stress
- Novocontrol, Solartron, TA Instrument – Temperature measurements [-150°C-350°C] and frequencies [10-3Hz-10MHz]
Application: Determination of dielectric characteristics in mass or confined materials - Netzsch, polyimide, quartz and ceramic sensors with interdigitated electrodes
Application: in-situ electrical monitoring of phase changes: vitrification, phase separation, implementation monitoring in RTM, extruder
Resistivity and conductivity measurements
- Keithley 220, 617, 237, High-voltage characterisation bench (10kV)
- Temperature measurement cells, cells under pressure
Application: percolation in conductive polymer composites, PTC and PVC materials, high-permittivity hybrid materials, materials for electrical insulation (cables, high power modules), ferroelectric properties, electrical conductivity of high-voltage materials
Multi-functionality: electrical/rheological/magnetic/thermal/mechanical coupled characterisations
- Magnet (magnetic/electric field)
Application: oriented materials: high permittivity, unidirectional conductivity - Coupled characteristics of materials (mechanical/electrical)
- System for measuring heat flow exchanged when applying an electric field
Application: Electrocaloric properties of materials, electrical conductivity/heat-flow exchanged relations
Diffusion, sorption, permeation
Gas transport
- Gas diffusion permeameters
Gas: He, H2, CO2, O2, N2, CH4
Application: averages and flows, selectivity studies - OXTRAN (model 2/21 Mocon)
Gas: O2
Application: barrier properties Ability to measure on hydrated films under controlled conditions
Steam transport
- Gas diffusion permeameter
Application: averages and flows - PERMATRAN (Model 3/33 Mocon)
Application: medium-flow barrier properties
Permeation, permeation of liquid mixtures
- Permeation cells for weighing analysis
- Permeation cell coupled with gas chromatography detection
Application: barrier properties for high-flow selectivity studies
Sorption
- 2 sorption microbalances (DVS Advantage and SETARAM)
- Vapours (water, toluene, ethanol), gas
Application: isotherms of sorption (polymers) and adsorption (fillers) – study of hydration and swelling mechanisms
Summary