Surface Layer Micro-Hardness of Modified LDPE by Radiation Cross-Linking after Temperature Load

Abstract

The presented article deals with the research of surface layer ́s micro-mechanical properties of modified LDPE by radiation cross-linking after temperature load. These micro-mechanical properties were measured by the DSI (Depth Sensing Indentation) method on samples which were non-irradiated and irradiated by different doses of the β – radiation and then were temperature loaded. The purpose of the article is to consider to what extent the irradiation process influences the resulting micro-mechanical properties measured by the DSI method. The LDPE tested showed significant changes of indentation hardness and modulus after temperature load.

Mechanical Properties of Selected Types Thermoplastic Materials Modified by High Doses of Ionizing Beta Radiation under Thermal Stress

“…Gamma radiation created from radioactive isotope Co-60 ( 60 Co) belongs to ionizing radiation as well as beta radiation (electron beam) and X-ray radiation. All of these types significantly differ, however during these all process the energy transfer to atoms of irradiated material occurs [1][2][3][4][5].…”