금속, 유리섬유, 탄소섬유로 보강된 코르크 복합보드의 물리적 특성
Physical Properties of Cork Composite Boards Reinforced with Metal, Glass Fiber and Carbon Fiber
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이 연구는 코르크보드를 보강하여 건축부재 및 놀이기구의 안전부재 등으로 폭넓게 활용할 것을 목적으로 코르크보드의 중층에 금속, 유리섬유,탄소섬유를 삽입하여 보강한 3종의 코르크복합보드를 제조하였고, 코르크복합보드의 수분흡수에 따른 치수안정성 및 접착층 박리성능을 조사하였다. 코르크복합보드의 흡수율은 0.37% - 0.45%의 범위에 있었고, 코르크보드에 비해 0.61배 - 0.74배의 낮은 값을 나타내었다. 코르크복합보드의두께팽창률은 0.92% - 1.58%의 범위에 있었고, 코르크보드 보다 1.4 - 2.4배의 높은 값을 나타내었다. 그러나 이 값들은 일반 목질보드보다현저히 낮았고, KS규격의 12%이하를 하회하는 것이 확인되었다. 코르크복합보드의 준내수 및 내수침지박리시험후의 접착층박리율은 0%로 전혀접착층의 박리가 일어나지 않아 우수한 내수성을 나타내었고, 흡수율과 흡수두께팽창률은 상온침지에 비해 다소 증가하였으나, 목질보드에 관한KS규격을 하회하는 우수한 치수안정성을 나타내는 것이 확인되었다.
Abstract
In this study, three cork composite boards reinforced with metal, glass fiber and carbon fiber in the middle layer of the cork boardwere manufactured for wide use as building members and safety members for amusement equipment reinforcing cork boards. Thedimensional stability and peeling performance of the glue line according to the water absorption of the cork composite boards wereinvestigated. The absorption ratios of the cork composite boards were in the range of 0.37% - 0.45% and were 0.61 - 0.74 times lowerthan that of the cork board. The thickness swelling of the cork composite boards was 0.92% - 1.58%, 1.4 - 2.4 times higher thanthat of the cork board. However, these values were significantly lower than those of general wood-based boards, and it was confirmedthat they were below 12% of the KS standard. The peeling ratios in glue lines after the semi-water-resistant and water-resistant immersionpeeling tests of the cork composite boards were 0%, indicating excellent water resistance with no peeling in the glue lines. It was confirmedthat it showed excellent dimensional stability below the KS standard.
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