한국섬유공학회지 (Textile Science and Engineering)

  • 제61권3호
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  • Pages.99-109
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  • 2024
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  • 1225-1089(pISSN)
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  • 2288-6419(eISSN)
한국섬유공학회 (The Korean Fiber Society)
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경화제 종류에 따른 TGDDM 에폭시 기반 우주환경용 탄소섬유 복합재료의 제조 및 특성 평가

Manufacturing and Characterization of TGDDM Epoxy-based Carbon Fiber Composites for Space Applications According to Curing Agent Types

  • 투고 : 2024.05.27
  • 심사 : 2024.06.20
  • 발행 : 2024.06.30
⟨ 이전 논문 다음 논문 ⟩

초록

In this study, the characteristics of TGDDM (N,N,N',N'-tetraglycidyl-4,4'-diaminediphenylmethane) based epoxy resin for space applications were analyzed, and carbon/epoxy composites were fabricated using this resin as the matrix. M-MIPA (4,4'-methylenebis(2-isopropyl-6-methylaniline)) and M-DEA (4,4'-methylenebis(2,6-diethylaniline)) were used as base curing agents. Additionally, 3,3'-DDS (diaminodiphenyl sulfone) and 4,4'-DDS were respectively added to formulate the two types of epoxy matrices. The addition of 4,4'-DDS led to a lower initiation temperature and increased heat of reaction compared to 3,3'-DDS. However, the maximum exothermic temperature and activation energy showed no significant difference. Moreover, the addition of 4,4'-DDS increased the glass transition temperature, crosslink density, tensile strength, and strain at break of the epoxy. The thermal decomposition behavior of the cured epoxy indicated that with the addition of 4,4'-DDS, the activation energy was higher in the early stages of decomposition compared to 3,3'-DDS. However, it maintained a thermally stable region with negligible change in activation energy even as conversion increased. The flexural strength of the carbon/epoxy composites with 4,4'-DDS was 8.15% higher than that of the composites with 3,3'-DDS.

키워드

과제정보

본 연구는 대한민국 정부(산업통상자원부 및 방위사업청) 재원으로 민군협력진흥원에서 수행하는 민군기술협력사업의 연구비 지원으로 수행되었습니다(과제번호 22-CM-19).

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