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CNT 직경에 따른 CNT-Polyamide 복합체의 특성 변화
박영수(Y.S. Park),송준혁(S.J. Song),김경재(K.J. Kim),허몽영(H.M. Huh),유명한(M.H. Yoo),문민석(M.S. Moon),오제하(J.H. Oh),정우성(W.S. Jeong),강신재(S.J. Kang),양성모(S.M. Yang) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
The effect of CNT diameters on properties of CNT-polyamide composites were investigated such as electrical conductivity, tensile strength and thermal conductivity. To get different diameter distributions of CNTs, several portions of Mo and Fe in Mo-Fe/MgO catalysts were synthesized by a combustion method at 600℃. And all CNTs growed at 900℃ with 3 SLM methane and 1 SLM hydrogen for 40min. Four kinds of CNTs with different diameter distributions, such as 1~3㎚, 3~7㎚, 7~13㎚, and 10~30㎚, were selected to make CNT-polyamide composites. Each composite was manufactured by a solution mixing using bar-type ultra-sonicator in the CNT portions from 1phr to 50 phr. And electrical conductivity, tensile strength, and thermal conductivity were measured. Three properties of CNT-polyamide composite, manufactured with 10㎚ diameter, were more excellent compared to other composites, with electrical conductivity 10°Ω at 7phr, thermal conductivity 2.4.W/mK at 40phr, tensile strength 60㎫ at 30phr. CNTs with diameter 10㎚ were superior to other diameters for the multi-functional composite such as CNT-polyamide Composites.