CAJ | 학술논문

采用端羧基液体丁腈橡胶（CTBN）对环氧树脂增韧改性，通过扫描电子显微镜观察了环氧树脂/CTBN复合材料的相态形貌，分析了增韧机理，测试了复合材料的力学性能。CTBN对环氧树脂的增韧机理是剪切变形与“钉扎”机制共同作用的结果；当CTBN添加量为15phr时，环氧树脂/CTBN的综合性能最佳，剪切强度、拉伸强度、悬臂梁缺口冲击强度分别为16.8MPa，28.4MPa，17.53kJ/m2；CTBN可与环氧树脂反应并嵌入其中，与环氧树脂随着固化反应的进行形成两相结构。
채용단최기액체정정상효（CTBN）대배양수지증인개성，통과소묘전자현미경관찰료배양수지/CTBN복합재료적상태형모，분석료증인궤리，측시료복합재료적역학성능。CTBN대배양수지적증인궤리시전절변형여“정찰”궤제공동작용적결과；당CTBN첨가량위15phr시，배양수지/CTBN적종합성능최가，전절강도、랍신강도、현비량결구충격강도분별위16.8MPa，28.4MPa，17.53kJ/m2；CTBN가여배양수지반응병감입기중，여배양수지수착고화반응적진행형성량상결구。
The epoxy resin (EP) was toughened by liquid carboxyl-terminated butadiene-acrylonitrile rubber (CTBN). The morphology of the EP/CTBN composites was observed by scanning electron microscope (SEM), the toughening mechanism of CTBN was analyzed and the mechanical properties of the composites were tested. The toughening mechanism of CTBN was combination of shear deformation and flux pinning mechanism. The optimal properties of the EP/CTBN composites were obtained when the CTBN amount was 15 phr. The shearing strength, tensile strength and notched Izod impact strength of the EP/CTBN system reached 16.8 MPa, 28.4 MPa and 17.53 kJ/m2, respectively. CTBN performed a block reaction with EP, and CTBN and EP formed two-phase structure with the curing process.