การเตรียมอิลาสโตเมอร์กำบังรังสีปลอดตะกั่วจากคอมโพสิตยางธรรมชาติผสมกับสารประกอบออกไซด์

Abstract

Lead-free radiation shielding elastomer based on natural rubber/ radiation shielding fillers composites was successfully prepared. The optimum conditions was found using natural rubber matrix with bismuth oxide filler for 150 phr. This was confirmed by mechanical properties including modulus at 100% elongation, hardness, tensile strength, elongation at break and also confirmed by good radiation shielding properties including attenuation coefficient, effective atomic number (Zeff), effective electron density (Ne), half value layer (HVL) and lead equivalent. The prepared radiation shielding elastomer based on natural rubber composites by suitable condition give better gamma radiation shielding those of commercial window, serpentine, ordinary concrete, hematite- serpentine and greater x-rays radiation shielding those that commercial window and x-rays window. Therefore, the developed natural rubber composites in this research can be used as efficient lead-free flexible radiation shielding materials.