6533b7d7fe1ef96bd12678e5
RESEARCH PRODUCT
The Effect of Impact Pressure on Positron Lifetime in Ultra High Molecular Weight Polyethylene (PE-UHMW)Chirulen®1120
Ryszard PietrzakRoman Szataniksubject
Ultra-high-molecular-weight polyethyleneImpact pressureAnnihilationMaterials scienceMechanical EngineeringCharpy impact testPolyethyleneCondensed Matter PhysicsPositroniumchemistry.chemical_compoundNuclear magnetic resonancePositronVolume (thermodynamics)chemistryMechanics of MaterialsGeneral Materials ScienceComposite materialdescription
The paper presents the results of investigations of the effect of impact pressure (in the range of both elastic and plastic deformations) on the parameters of the positron lifetime spectra in PE-UMHW polymer known under the trade mark Chirulen1120. The changes in the long-living component of the positron lifetime spectrum, connected with the annihilation of o-Ps in the pick-off process, are analyzed in dependence on the impact energy. The impact duration in the Charpy’s tests depending on the impact energy was measured, too. The dependencies of the radius of the volume of empty spaces in which the positronium annihilates, on the impact pressure were determined applying the Eldrup-Tao model.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-12-01 | Materials Science Forum |