Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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Preparing of Carbon Fiber Composites Using by Vacuum Bag Hot-press Molding Process and Comparison with the other Molding Processes

진공백 핫 프레스 성형공정을 이용한 탄소섬유 복합재료의 제조와 공정비교

  • Heo, Won-Wook (Department of Organic Material Science and Engineering, Pusan National University) ;
  • Jeon, Gil Woo (Korea Textile Development Institute) ;
  • An, Seung Kook (Department of Organic Material Science and Engineering, Pusan National University)
  • Received : 2019.09.27
  • Accepted : 2020.03.26
  • Published : 2020.04.30
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Abstract

In this study, vacuum bag hot-press (V-HP) process can be used as an out-of-autoclave (OOA) process by improving the inefficient process of the autoclave forming method with excellent physical properties and surface quality. A carbon fiber composite was molded via V-HP process and analyzed the physical properties and microstructures between composites manufactured by autoclave (AC) process and hot-press process (HP). The tensile strength of the composite materials using the V-HP process was 320.6 MPa and the AC process samples found to be substantially close to the tensile strength of 335.3 MPa. As a result of confirming the surface quality of the composite material using SEM, it was confirmed that in the V-HP process, the removal state of pores due to volatile solvent in the resin was slightly lower than that of the AC process, but it had a considerably superior surface compared to the HP process.

본 연구에서는 우수한 물성과 표면품질을 가지는 오토클레이브 성형공법의 비효율적인 공정을 개선하여 탈 오토클레이브(Out-of-autoclave, 이하 OOA) 공정으로써 활용이 가능한 진공백 핫 프레스 공정(Vacuum bag hot-press, 이하 V-HP)을 이용하여 탄소섬유 복합재료를 제작하고 오토클레이브(Autoclave, 이하 AC) 공정과 핫 프레스공정(Hot-press, 이하 HP)으로 제작된 복합재료간 물성 및 미세구조를 분석하였으며, OOA공정으로의 가능성을 확인하였다. V-HP공정을 사용한 복합재료의 인장강도는 320.6 MPa로써, AC공정을 이용한 복합재료의 인장강도 335.3 MPa에 상당히 근접한 물성을 보이는 것을 확인하였다. SEM을 이용한 복합재료 표면품질을 확인한 결과 V-HP공정의 경우, 수지내 휘발용매로 인한 기공의 제거상태가 AC공정과 비교하여 다소 낮으나 HP공정과 비교하여 상당히 우수한 표면을 가지는 것을 확인할 수 있었다.

Keywords

References

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