WebIn summary, it should be noted that information about the radiation resistance of polymer materials has been obtained mainly for standard conditions of irradiation (room … WebSep 9, 2024 · The invention relates to a polypropylene composition having improved radiation stability, comprising: a) a propylene polymer present in amount ≥ 94.0 wt.%; and b) aliphatic alcohol having at least two hydroxyl groups, wherein the aliphatic alcohol may be selected from the group consisting of (i) straight chain C5-C20 aliphatic diols, (ii) C4-C30 …
Determination of the Resistance of Polymeric Materials to Solar Radiation
WebApr 28, 2024 · The aim of this study was to investigate the load-bearing capacity of anterior crowns made of different commercial particulate-filled composites (PFCs) and reinforced by a core of short-fiber composite (SFC) (bilayer structure). Four groups of composite crowns were fabricated for an upper central incisor (n = 20/group). Two groups were made of … Webperspectives on polymer compatibility with radiation sterilization (gamma-ray, electron beam or x-ray) for all families (thermoplastics, elastomers, biopolymers), and the current … in and out lunge
Polymer Materials Selection for Radiation-Sterilized
WebA moderate number can improve the properties of a polymer but a high density of them can cause stiffness and brittleness. Irradiation can also break chemical bonds leading to … WebFeb 1, 2000 · Polymers vary in sensitivity to radiation from PTFE and polyacetal, with damage occurring at doses as low as 4 kGy, to polystyrenes, polyimides, and LCP, which … WebFeb 16, 2015 · The changes in the chemical resistance are represented by swelling in the solvent xylene. 1. Introduction. Interactions of ionizing radiation with polymers induce … inbound informatica significado