ISSN 2288-2103 (Print)
ISSN 2288-2111 (Online)
 
 
 
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The Journal of the Korean Society for Composite Materials. 2017 30(5): 323-330
ⓒ The Journal of the Korean Society for Composite Materials
    
 
Multiscale Analysis on Expectation of Mechanical Behavior of Polymer Nanocomposites using Nanoparticulate Agglomeration Density Index
Kyungmin Baek, Hyunseong Shin, Jin-Gyu Han, Maenghyo Cho
Department of Mechanical and Aerospace Engineering, Seoul National University, Electronic Convergence Materials & Device Research Center, Korea Electronics Technology Institute
 
 
 
나노 입자의 군집밀도를 이용한 고분자 나노복합재의 기계적 거동 예측에 대한 멀티스케일 연구
백경민 · 신현성 · 한진규 · 조맹효
 

In this study, multiscale analysis in which the information obtained from molecular dynamics simulation is applied to the continuum mechanics level is conducted to investigate the effects of clustering of silicon carbide nanoparticles reinforced into polypropylene matrix on mechanical behavior of nanocomposites. The elastic behavior of polymer nanocomposites is observed for various states of nanoparticulate agglomeration according to the model reflecting the degradation of interphase properties. In addition, factors which mainly affect the mechanical behavior of the nanocomposites are identified, and new index ‘clustering density’ is defined. The correlation between the clustering density and the elastic modulus of nanocomposites is understood. As the clustering density increases, the interfacial effect decreased and finally the improvement of mechanical properties is suppressed. By considering the random distribution of the nanoparticles, the range of elastic modulus of nanocomposites for same value of clustering density can be investigated. The correlation can be expressed in the form of exponential function, and the mechanical behavior of the polymer nanocomposites can be effectively predicted by using the nanoparticulate clustering density.
 
Key words : Polymer nanocomposites,Homogenization,Nanoparticulate agglomeration, Multiscale analysis
중심단어 : 고분자 나노복합재,균질화,나노입자 군집현상,멀티스케일 해석
 
Address for reprints : Maenghyo Cho, Department of Mechanical and Aerospace Engineering, Seoul National University, Corresponding author
Tel : ,    Fax : ,    E-mail : mhcho@snu.ac.kr
 
 
 
 
  
 
 
 

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