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알칼리 환경에 대한 유리섬유/비닐에스테르 수지 복합재료의 내구성 향상에 관한 연구
박창호(C. H. Park),김형열(H. Y. Kim),박영환(Y. H. Park),문창권(C. K. Moon) 한국동력기계공학회 2006 한국동력기계공학회 학술대회 논문집 Vol.- No.-
In this paper, effect of additives on durability of glass fiber/vinylester resin composites in alkaline environment at 80℃ has been investigated. Additives were polyvinyl alcohol, kaolin and alumina. A alkaline solution contains 0.16% Ca(OH)₂. 1% NaOH, 1.4% KOH by weight was used for the alkaline environmental condition to simulate concrete pore solution with high pH 12~13 level. The conditioned specimens of strand type were tested in tension to evaluate the tensile strength. The test results have indicated that the tensile strength of the conditioned specimens was significantly reduced, regardless of the environmental factors considered, due to the degradation of GFRP composites. The main objective of this study is to improve the durability performance of GFRP composites by adding additives.