내진보강용 탄소섬유 복합사 하이브리드 그리드 직물 제조 및 공학적 성능 평가. I. 탄소섬유 복합사 제조 및 최적 직물 설계

• Published in: 한국섬유공학회지 Vol. 55; no. 4; pp. 280 - 285
• Main Authors: 연우, Yu Yan, 차주희, Ju Hee Cha, 채철수, Charles Chai, 이형호, Hyeong Ho Lee, 전한용, Han Yong Jeon
• Format: Journal Article
• Language: Korean
• Published: 한국섬유공학회 31.08.2018
• Subjects: carbon fiber composite yarns; double covering; hybrid grid fabrics; seismic reinforcement; TPU(thermoplastic poly urethane) extrusion coating; 섬유공학; carbon fiber composite yarns; TPU(thermoplastic poly urethane) extrusion coating; seismic reinforcement; double covering; hybrid grid fabrics
• ISSN: 1225-1089; 2288-6419

In this study, a carbon fiber composite yarn with the desired stiffness and ductility was fabricated for use in hybrid grid fabrics for seismic reinforcement, and the optimum structures of the grid fabrics were evaluated. Carbon fiber composite yarn was prepared by a double-covering process with carbon fiber/aramid fiber/high-strength PET fiber. It was confirmed that the strength of the carbon fiber composite yarn was greatly increased compared to that of carbon fiber, and the elongation increased by about 0.5%. The TPU (thermoplastic polyurethane) extrusion coating method was more suitable for the carbon fiber composite yarn than urethane impregnation for the coating process. Meanwhile, in the evaluation of yarn fineness and grid structure, thick fibers had greater strengths. When comparing the strength and elongation, the bi-directional grid showed no advantages over the unidirectional grid.