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Influence of Filler Content on Thermo-Physical Properties of Hollow Glass Microsphere- Silicone Matrix Composite

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Abstract

Thermo-physical properties of hollow glass microsphere (HGM) filled silicone resin are analyzed by various mathematical models to optimize the formulation for a low-density high-temperature resistant composite. The study involves analyzing effective thermal conductivity, specific heat, and density for a two-phase particulate composite system by using the most popular expressions available in the literature at various volume fractions of HGM in the silicone resin matrix. Experiments are performed to compare theoretical results with the experimental data and identified the preferred composition with a density as low as 0.39 g/cc and thermal conductivity 0.116 W/m-K. The microstructural studies by SEM are done to explain the deviation in experimental and theoretical results. FEM analysis is done to understand the heat flow phenomenon in HGM filled silicone composites.

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Acknowledgments

The authors are thankful to DRDO and Director, DRDL, for the support to carry out this work. They are also grateful to MDD, DRDL for helping in the characterization of the material.

Funding

This work was supported by Defence Research and Development Organization (DRDO). However, this research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.

Author information

Authors and Affiliations

  1. Defence Research and Development Laboratory, Dr. APJ Abdul Kalam Missile Complex, DRDO, Hyderabad, Telangana, 500058, India

    Tanu Srivastava & S. Krishna Mohan

  2. School of Science, GITAM (Deemed to be University), Hyderabad Campus, Rudraram, Mandal Hyderabad, Patancheru, Telangana, 502329, India

    Tanu Srivastava, Naresh Kumar Katari, Balaji Rao Ravuri & Rambabu Gundla

Authors
  1. Tanu Srivastava
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  2. Naresh Kumar Katari
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  3. Balaji Rao Ravuri
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  4. Rambabu Gundla
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  5. S. Krishna Mohan
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Contributions

Mrs. Tanu Srivastava carried out the all experimental analysis in this research paper. Dr. Naresh Kumar Katari participated in the design of the work and performed statistical analysis. Prof. Balaji Rao Ravuri contributed in the theoretical analysis and mathematical modeling of thermal properties. Prof. Rambabu Gundla contributed in finite element method (FEM) analysis. Dr. S. Krishna Mohan helped in comparing theoretical and experimental test results and drafting the manuscript. All authors read and approved the manuscript.

Corresponding author

Correspondence to Naresh Kumar Katari.

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This article does not contain any studies with human or animal subjects.

Conflict of Interest

Mrs. Tanu Srivastava, Dr. Naresh Kumar Katari, Prof. Balaji Rao Ravuri, Prof. Rambabu Gundla and Dr. S. Krishna Mohan declare that they have no conflict of interest.

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I, Naresh Kumar Katari on behalf of all authors hereby declare that we participated in the study and development of this manuscript.

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Srivastava, T., Katari, N.K., Ravuri, B.R. et al. Influence of Filler Content on Thermo-Physical Properties of Hollow Glass Microsphere- Silicone Matrix Composite. Silicon 14, 1179–1189 (2022). https://doi.org/10.1007/s12633-020-00869-5

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  • DOI: https://doi.org/10.1007/s12633-020-00869-5

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