Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi, Gyeongbuk 39177, Korea
금오공과대학교 고분자공학과
Since unidirectional (UD)
prepregs are anisotropic in the fiber alignment direction, the alignment angle
of carbon fibers plays a significant role in the mechanical and thermal
properties of carbon fiber/epoxy composites. Non-crimp carbon fiber
fabric/epoxy composites with different angle-plies of [0°], [0°/90°],
[0°/45°/90°], and [0°/30°/60°/90°] stacking sequences were prepared by
compression molding. The effect of prepreg angle-ply on the properties of
resulting composites was explored. The [0°] composite exhibited the highest
dynamic mechanical, tensile, flexural and impact properties, whereas the [90°]
composite exhibited the lowest properties. The properties of the [0°/90°],
[0°/45°/90°], and [0°/30°/60°/90°] composites were intermediate between the
[0°] and [90°] composites, depending on the angle-plies consisting of the
composites. The present study indicates that prepreg angle-ply design should be
importantly considered to manipulate their properties of non-crimp carbon fiber
fabric-reinforced composites.
일방향(UD) 프리프레그는
섬유방향으로 이방성을 띠고 있기 때문에 탄소섬유의 배향각은 탄소섬유/에폭시 복합재료의 기계적, 열적 특성에 중요한 역할을 한다. [0°], [0°/90°], [0°/45°/90°], [0°/30°/60°/90°] 적층 순서에 따라 서로 다른 angle-ply를 갖는 크림프가 없는
탄소섬유직물/에폭시 복합재료를 압축성형으로 제조하고, 그들의
특성에 미치는 프리프레그 angle-ply 영향을 조사하였다. [0°] 복합재료는 가장 높은 동역학적, 인장, 굴곡 및 충격 특성을 나타낸 반면, [90°] 복합재료는 가장 낮은 특성을 나타냈다. [0°/90°], [0°/45°/90°], [0°/30°/60°/90°] 복합재료는
프리프레그 angle-ply에 따라 [0°]와 [90°] 복합재료
사이의 특성을 나타내었다. 본 연구는 크림프가 없는 탄소섬유직물강화 복합재료의 특성 제어를 위해 프리프레그 angle-ply 디자인이 중요함을 가리킨다
Keywords: non-crimp carbon fiber fabric/epoxy composite, unidirectional prepreg, angle-ply, compression molding, properties
2020; 44(1): 61-69
Published online Jan 25, 2020
Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gumi, Gyeongbuk 39177, Korea