MECHANICAL PROPERTIES OF LOW DENSITY POLYETHYLENE (LDPE) IRRADIATED BY LOW DOSES BETA IRRADIATION MEASUREMENT BY ULTRA NANOINDENATION TEST

Abstract

The influence of low doses of beta radiation on the changes in the structure and selected properties (mechanical and thermal) polymers were proved.  Using low doses of beta radiation for low density polyethylene (LDPE) and its influence on the changes of mechanical properties of ultra nanohardness has not been studied in detail so far. The specimens of low density polyethylene (LDPE) were made by injection moulding technology and irradiated by low doses of beta radiation (0, 33, 66 and 99 kGy). The changes in the microstructure and micromechanical properties of surface layer were evaluated using FTIR, WAXS and instrumented ultra nanohardness test. The results of the measurements showed considerable increase in mechanical properties (indentation hardness, indentation elastic modulus) when the low doses of beta radiation are used.     

Recommended articles

MATHEMATICAL FORMULATION OF THE KINEMATIC EQUATIONS FOR THE CONTROL OF THE ROBOT SYSTEM WITH APPLICATION FOR THE MACHINING CONICAL SURFACES

STEFAN GASPAR, JAN PASKO
Keywords: robotic mechanism | conical surface | orientation of a robot end element | transform matrix | inverse problem

ASPECTS AFFECTING ACCURACY OF OPTICAL 3D DIGITIZATION

RADOMIR MENDRICKY
Keywords: Atos | D optical digitizing | 3D scanner | calibration | Measurement accuracy | Inspection | Acceptance test

PRODUCTION BY FDM METHOD RP TECHNOLOGY FROM PLA ECO-MATERIALS EXTRUDED HORIZONTALLY IN LENGTH

ANTON PANDA, EMA NOVAKOVA-MARCINCINOVA, LUDMILA NOVAKOVA-MARCINCINOVA, TADEUSZ ZABOROWSKI, IVAN MRKVICA
Keywords: rapid prototyping | PLA eco-materials | fused deposition modelling | PLA –PolyLacticAcid | 3D model

EFFECT OF LOW BETA IRRADIATION DOSE ON MECHANICAL PROPERTIES OF SURFACE LAYER OF INJECTION MOULDED POLYAMIDE 11 (PA 11)

DAVID MANAS, MIROSLAV MANAS, LENKA GAJZLEROVA, MARTIN MIZERA
Keywords: Polyamide 11 (PA 11) | cross-linking | micro-hardness | micro-mechanical properties | surface layer