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http://dx.doi.org/10.7234/composres.2015.28.6.348

Evaluation of Dispersivity and Resistance of the Adhesive Joint According to Dispersion Methods of CNT  

Lee, Bong-Nam (School of Mechanical and Aerospace Engineering, Research Center for Aircraft Parts Technology, Gyeongsang National University)
Kim, Cheol-Hwan (School of Mechanical and Aerospace Engineering, Research Center for Aircraft Parts Technology, Gyeongsang National University)
Kweon, Jin-Hwe (School of Mechanical and Aerospace Engineering, Research Center for Aircraft Parts Technology, Gyeongsang National University)
Choi, Jin-Ho (School of Mechanical and Aerospace Engineering, Research Center for Aircraft Parts Technology, Gyeongsang National University)
Publication Information
Composites Research / v.28, no.6, 2015 , pp. 348-355 More about this Journal
Abstract
NDT (Non Destructive Test) of the adhesive joints is very important because their strengths have greatly affected by the worker's skill and environmental condition. Recently, the electric impedance method in which 1-2 wt% CNT was dispersed in the adhesive and the electric resistance of the adhesive joint was measured was suggested for the defect detection of the adhesive joint. The uniform dispersion of CNT in the electric impedance method is very important to make a constant electric resistance of the adhesive joint and the accuracy of defect detection depends on the uniform dispersion. In this paper, the adhesive joints in which CNT was dispersed in the adhesive by the four dispersion methods were made and their electric resistance were measured. The pre-process and evaporation process of CNT using the ultrasonic method and agitation method was used and the effective dispersion method was suggested. Also, the criteria to evaluate the dispersivity was proposed.
Keywords
Adhesive; Dispersion; CNT; Impedance; Joint;
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