슬래그 섬유 강화 복합재료의 기계적 및 내환경성 특성 평가에 관한 연구

Abstract

Industrial development has caused problems such as energy depletion and environmental pollution. As a result, it is necessary to develop new materials that can cope with alternative energy and deteriorating environment, and to promote light weighting of structural materials and eco-friendly materials. Therefore, the use of fiber reinforced polymers (Fiber Reinforced Polymer) is increasing rapidly to improve the high energy requirements needed to produce the product. In this study, mechanical properties, composition and surface analysis were carried out through the manufacture of slag fiber-reinforced composite materials to be used to replace basalt fiber-reinforced composite materials applicable to marine structures, ships and simple components that could be exposed to marine environment. The surface conditions were observed through Scanning Electron Microscope (SEM) in order to analyze the resulting surface conditions, with each 720 hours of immersion in the fresh water and seawater environment, and the change in mechanical strength according to the amount of material absorbed over the time of the erosion. Following fresh-water and sea-water absorption, the rate of absorption in the sea was small, but higher than in the desalination environment, and mechanical strength was also small in the sea-water environment, but also reduced rates. In addition, in acid/base environmental tests, the composition changes and surfaces over the bedding time were analyzed through the Scanning Electron Microscopy-Energy Dispersive X-ray Spectrometer (SEM-EDS). It is possible to predict the applicability in the polar environment. The decrease in tensile strength in the sea was small but large through the absorption of fresh water and sea water, and the acid and salt environmental tests showed a significant decrease in tensile strength in the mountain environment. Through this study, the mechanical characteristics of basalt fiber reinforced composite materials and slag fiber reinforced composite materials based on fresh-water, sea-water absorption days and acid/base environmental tests will be examined and the potential for use of eco-friendly fiber reinforced composite materials applied to marine structures, ship and marine environmental sectors and polar environments will be expected.