 |
|||
laboratory tests
| Do you require experimental validation of chemical-physical properties of a polymer based material?
Press side tabs for a selection of the laboratory tests that we perform. We are specialized in tests for micro (e.g. glass / carbon reinforced) and nano (e.g. functionalized graphene sheets / carbon nanotube) based polymers. Industrial applications range from coatings, structural laminates, composites to membrane and sealing applications. Note that, additionally to the test procedure, we optimize the experimental design and interpretation using CheFEM simulation & analysis. |
 DVS for thin (um) / thick samples (mm). |
| permeation | ||
| liquid, vapour, gas solubility thermodynamics |
test methods: ASTM D1434, ASTM E96 (water vapor transmission rate test, wvtr), ASTM D570 - gravimetric, dynamic vapour sorption (dvs) & electrical impedance spectroscopy (eis). additional eesults: equilibrium solubility, temperature dependence (Arrhenius), pressure dependence, enthalpy and entropy of mixing + heat of condensation, dimensional change, chemical potentials, swelling stresses. |
|
| liquid, vapour, gas permeation |
test methods: ASTM D1434, ASTM E96 (water vapor transmission rate test, wvtr), ASTM F1306 (slow rate penetration of films), ASTM D570 - gravimetric, dynamic vapour sorption (dvs) & electrical impedance spectroscopy (eis), ASTM F1249 (water vapor transmission rate using a modulated Iinfrared sensor). additional results: steady and unsteady permeability, degree of plasticizing, penetration time, penetration depth, time lag, indication of multicomponent - mixtures diffusion behaviour. |
|
| additional permeation tests | ASTM D814 (rubber vapor transmission of volatile liquids), ASTM D895 (water vapor permeability of packages), ASTM D1251 (water vapor permeability of packages by temperature / pressure cycle method), ASTM D2684 (permeability of thermoplastic containers to packaged reagents or proprietary products), ASTM D3079 (water vapor transmission - wvtr - of flexible heat sealed packages for dry products), ASTM D3199 (water vapor transmission - wvtr - through screw - cap closure linings). |
| corrosion | ||
| chemical resistance |
test methods: ASTM C581 - gravimetric dynamic vapour sorption (dvs). ardditional results: quantitative insight in surface corrosion and polymer chain chemical degradation reaction kinetics. |
| mechanics | ||
| stress & strain |
test methods: stress tests: ASTM D638, ASTM D790, thermal analysis (differential scanning calometry, dynamic mechanical analysis, thermomechanical analysis, thermogravimetric analysis, differential thermal analysis), etc. |
| ageing | ||
| polymer / composite ageing (physical - chemical ageing) |
test methods: combination of several ASTM test methods. among others: ASTM D648 - hdt (heat deflection temperature under Load), ASTM D256 - notched izod impact, ASTM D903 (peel test), ASTM D1922 (propagation tear resistance of plastic / multilayer film), ASTM D4329 and ASTM D4587(accelerated weathering, Williams Landel Ferry), ASTM D5946 (surface energy), ASTM D1822 (tensile impact), ASTM D412, ASTM D638, ASTM D882, ASTM D1708, ASTM D412 (tensile stress elastomer, rubber, plastic, laminate polymers), ASTM E1141 (thermogravimetric analysis, tga), ASTM D4329 (weathering QUV), ASTM D471 (mass uptake & loss). additional results: mechanical properties as a function of time, blister and osmosis (bulges) assessment, buckling/decompression assessment, adhesion (primers, sizings &binders) assessment, etc. |
