Polymer(Korea), Vol.16, No.2, 216-224, March, 1992
Aramid 단섬유 보강 에폭시 복합재료 제조: 2. 에폭시 매트릭스의 경화촉진 영향 및 아라미드 섬유 보강 에폭시 복합 재료의 기계적 물성
Short Aramid Fiber reinforced Epoxy Composites : 2. Effect of Curing Acceleration of Epoxy Matrix and Mechanical Properties of Aramid Fiber Reinforced Epoxy Composites
초록
에폭시-아민계의 경화 촉진과 에폭시 매트릭스 및 아라미드 섬유보강 에폭시 복합재료의 기계적 물성에 미치는 에폭시 매트릭스의 경화촉진제의 영향을 연구하였다. 비스페놀A의 디글리 시딜에테르(DGEBA)는 촉진제와 함께/또는 촉진제 없이 메틸렌디아닐린(MDA)으로 경화시켰다. 본 연구를 위하여 트리스(디메틸아미노메틸)페놀(DMP-30)과 3-(3,4-디클로로페닐)-1,1-디메틸우레아(DIURON) 두 종류의 촉진제를 사용하였다. DMP-30이 높은 Tg와 빠른 겔화시간, 높은 기계적 강도를 보여 DIIUON보다 양호한 촉진제임을 알 수 있었다. 아라미드 섬유로 보강된 에폭시아민 복합재료에서도 DMP-30으로 경화 촉진된 에폭시 복합재료가 DIURON으로 경화 촉진된 에폭시 복합재료보다 높은 기계적 강도를 나타내었다.
The effect of curing accelerators on the mechanical properties of epoxy matrix and aramid fiber reinforced epoxy composites was investigated. The epoxy, diglycidylether of bisphenol A (DGEBA) was cured with methylene dianiline(MDA) with or without accelerators. Two kinds of accelerators were tested for the study ; tris(dimethylaminomethyl) phenol (DMP-30) and 3-(3,4-dichlorophenyl)-1,1-dimethyl urea (DIURON). DMP-30 is more effective accelerator than DIURON which showed higher Tg, faster gel time and good mechanical strength. In the aramid-fiber reinforced epoxyamine composites, it was also found that the composite accelereted by DMP-30 exhibits higher mechanical strength than that accelerated by DIIRON.
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