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탄소나노튜브 보강 고무 복합재료의 배향해석 및 물성평가
서가울(Jiawei Xu),이동주(Dong Joo Lee) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.4
The mechanical and electrical properties of carbon nano-tube(CNT)/silicone compo- site were investigated as functions of number of inlet, CNT content, length and specimen thickness. Also, a numerical analysis carried out using moldflow2011. The mechanical and electrical properties increase with the CNT’s orientation and content. For a two-inlet mold, the weld line is formed. However, the tensile strength increases and the electrical resistivity decreases with the weld line due to the high CNT concentration in this region. The tensile strength in the vertical of the orientation direction is about 10~20% low when it compared to the value in orientation direction. As the specimen thickness increases, the tensile strength of composites decreases due to the CNT orientation and skin effect. The fiber orientation tensor of 3.5㎜ thick specimen is found to be better than the case of 2㎜ or 5㎜ by the numerical analysis. Therefore, the specimen with t=3.5㎜ has the highest tensile strength and the lowest surface electrical resistivity under the same condition.
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