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- W2295996957 abstract "본 연구에서는 ETSO-DDM(epoxy terminated siloxane-diaminodiphenylmethane) 복합 경화제상 siloxane 함량 변화에 따른 bisphenol계 레진(BPH)과의 경화 특성 변화와 이에 따른 기계적 특성 변화를 고찰해 보았다. ETSO-DDM/BPH 복합재료의 경화 특성 변화는 DSC를 통해 관찰하였으며, 만능 물성기의 인장 시험과 굴곡 시험을 통해 기계적 특성 변화를 측정하였다. ETSO-DDM/BPH 시스템의 경화 활성화 에너지는 ETSO의 함량이 감소함에 따라 지속적으로 증가하는 경향을 보였다. 이는 ETSO 함량이 감소함에 따라 합성된 ETSO-DDM 공단량체의 사슬길이가 짧아지게 되고 이로 인해 ETSO-DDM/BPH간의 가교거리 역시 짧아지게 되어 결국 가교밀도를 증가시켰기 때문으로 판단된다. ETSO 함량이 감소할수록 인장강도, 인장탄성률, 굴곡강도 및 굴곡탄성률 등의 기계적 특성은 증가를 보이는데 이는 짧은 사슬길이의 ETSO-DDM 공단량체가 rigid한 구조를 형성하여 공간상 존재하는 분자구조의 에너지 상태가 최소가 되도록 packing하였기 때문으로 사료된다. 【The curing kinetics and mechanical properties of siloxane-diaminodiphenylmethane (ETSO-DDM) on the two kinds of bisphenol (BPH) system which are DGEBA and DGEBF were investigated with the different contents of ETSO. To investigate the curing kinetics of the ETSO-DDM/BPH systems, differential scanning calorimeter (DSC) was used. The mechanical properties of ETSO-DDM/BPH systems were also examined by universal testing machine (UTM), tensile test and flexural test. From experimental results, the activation energies and mechanical properties of ETSO-DDM/BPH were improved with the decrease contents of ETSO. This was due to the high cross-linking density made from short length of ETSO-DDM, resulting in improving the mechanical inter-locking between ETSO-DDM and BPH in these systems.】" @default.
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- W2295996957 date "2009-07-01" @default.
- W2295996957 modified "2023-09-23" @default.
- W2295996957 title "Siloxane을 포함한 ETSO-DDM/BPH계 에폭시 시스템의 경화동력학 및 기계적 특성 분석" @default.
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