에폭시화 콩기름 개질 DGEBA 에폭시 수지계의 물성

우예준; 김대수; Ye Jun Woo; Dae Su Kim

Polymer(Korea), Vol.43, No.3, 359-364, May, 2019

DOI10.7317/pk.2019.43.3.359 Export Citation

에폭시화 콩기름 개질 DGEBA 에폭시 수지계의 물성

Physical Properties of a DGEBA Epoxy Resin System Modified with Epoxidized Soybean Oil

우예준, 김대수 ^†

충북대학교 공과대학 화학공학과

Ye Jun Woo, and Dae Su Kim^†

Department of Chemical Engineering, Chungbuk National University, 1 Chungdaero, Seowongu, Cheongju, Chungbuk 28644, Korea

E-mail:

초록

천연재료를 활용하여 고분자를 제조하는 연구가 최근 큰 관심을 끌고 있다. 본 연구에서는 전형적인 비스페놀 A형 다이글리시딜 이서(DGEBA) 에폭시 수지에 에폭시화 콩기름(ESO)을 첨가하여 기계적 및 열적 특성의 변화를 조사하였다. 에폭시 수지계의 ESO의 함량은 30 wt%까지 변화시켰고 당량비 만큼의 에틸렌다이아민을 경화제로 사용하였다. 경화된 에폭시 수지계의 기계적 특성은 만능재료시험기 및 충격시험기로 측정하였고 열분해 거동은 TGA로 조사하였다. 에폭시 수지계의 경화 거동을 DSC로 조사한 결과, ESO 첨가에 따라 경화속도가 감소하였다. ESO 함량이 증가할수록 경화된 에폭시 수지계의 기계적 특성은 크게 증가하였지만 열안정성은 약간 감소하였다.

Researches on the production of polymers using natural materials have attracted great interest in recent years. In this study, epoxidized soybean oil (ESO) was added to a typical diglycidyl ether of bisphenol A (DGEBA) epoxy resin to investigate the changes in mechanical and thermal properties. The content of ESO in the epoxy resin system was changed to 30 wt% and the stoichiometric amount of ethylenediamine was used as a curing agent. The mechanical properties of the cured epoxy resin system were measured by a universal testing machine and an impact tester, and thermal degradation behavior was examined by TGA. The curing behavior analysis of the epoxy resin system by DSC showed the curing rate decreased with the addition of ESO. As the ESO content increased, the mechanical properties of the cured epoxy resin system increased significantly but the thermal stability decreased slightly.

Keywords:epoxidized soybean oil;diglycidyl ether of bisphenol A;mechanical properties;curing behavior;thermal degradation behavior

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Lee SM, Polym. Korea, 42(3), 498 (2018)
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