Effect of particle surface treatment and blending method on flexural properties of injection-molded cenosphere/HDPE syntactic foams

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• 作者：B. R. Bharath Kumar ; Mrityunjay Doddamani…
• 刊名：Journal of Materials Science
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：51
• 期：8
• 页码：3793-3805
• 全文大小：3,708 KB
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• 作者单位：B. R. Bharath Kumar (1)
  Mrityunjay Doddamani (1)
  Steven E. Zeltmann (2)
  Nikhil Gupta (2)
  Uzma (3)
  S. Gurupadu (3)
  R. R. N. Sailaja (3)
  
  1. Lightweight Materials Laboratory, Department of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal, India
  2. Composite Materials and Mechanics Laboratory, Mechanical and Aerospace Engineering Department, Tandon School of Engineering, New York University, Brooklyn, NY, 11201, USA
  3. The Energy and Resources Institute (TERI), Southern Regional Center, Bangalore, 560 071, India
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Materials Science
  Characterization and Evaluation Materials
  Polymer Sciences
  Continuum Mechanics and Mechanics of Materials
  Crystallography
  Mechanics
  
• 出版者：Springer Netherlands
• ISSN：1573-4803

文摘

The present work on cenosphere/high-density polyethylene (HDPE) syntactic foams aims at understanding the effect of surface treatment of cenospheres and functionalization of HDPE on flexural properties. Cenospheres are treated with silane, and HDPE is functionalized with 10 % dibutyl maleate. Effects of mechanical and Brabender mixing methods are also studied. Flexural test specimens are cast with 20, 40, and 60 wt% of cenospheres using injection molding. The flexural modulus and strength are found to increase with increasing cenosphere content. Particle breakage increases with the cenosphere content, and the measured properties show increased dependence on processing method. Brabender mixing resulted in 70 and 41 % higher modulus and strength for 60 wt% cenospheres than HDPE. Modulus of syntactic foams is predicted by two theoretical models. Bardella–Genna model provides close estimates for syntactic foams having 20 and 40 wt% cenospheres, while predictions are higher for higher cenosphere content, likely due to particle breakage during processing. The uncertainty in the properties of cenospheres due to defects contributes to the variation in the predicted values.