Synthesis of Thermal Resistant and Transparent Al2O3 Reinforced Epoxy-Based Composite Coatings

Year : 2025 | Volume : 13 | Issue : 03 | Page : 178 183
    By

    Gaurav Verma,

  • Kamal Sharma,

  • Aayush Gupta,

  1. Research Scholar, Department of Mechanical Engineering, GLA University, Mathura, Uttar Pradesh, India
  2. Professor, Department of Mechanical Engineering, GLA University Mathura, Uttar Pradesh, India
  3. Assistant Professor Research, Department of Mechanical Engineering, GLA University Mathura, Uttar Pradesh, India

Abstract

This study explores the influence of thermal treatment on the structural, optical, and surface wettability characteristics of epoxy-based composite coatings reinforced with 3 wt.% aluminum oxide (Al₂O₃) nanoparticles. The coatings were synthesized via a dip-coating method on carbon fiber substrates and subjected to controlled thermal treatments at 300 °C, 400 °C, and 500 °C to assess their thermal resilience. X-ray diffraction (XRD) analysis confirmed the structural integrity of the composite coatings across all thermal conditions, with no signs of crystallization or phase transitions. Fourier transform infrared (FTIR) spectroscopy revealed consistent Al–O vibrational signatures, although some redshift and peak disappearance indicated temperature-dependent changes in the polymer matrix and interfacial bonding. Contact angle measurements demonstrated a stable hydrophobic behavior with negligible variation (~69.4°–69.7°) even after high-temperature exposure, indicating preserved surface chemistry and nanoparticle distribution. Notably, optical transmittance in the visible region exhibited a dramatic enhancement, increasing from 7–10% in untreated samples to over 50% following thermal treatment, peaking at ~60% after treatment at 400 °C. This significant improvement in transparency, coupled with thermal and surface stability, underscores the suitability of epoxy Al₂O₃ composite coatings for multifunctional applications in harsh environments, particularly where transparency and stable wettability are critical—such as in aerospace, automotive, and optical devices.

Keywords: Al2O3, epoxy coatings, nanocomposite materials, thermal stability, contact angle.

[This article belongs to Journal of Polymer and Composites ]

aWQ6MjEyMTQ1fGZpbGVuYW1lOjA5OGViMTI5LWZpLndlYnB8c2l6ZTp0aHVtYm5haWw=
How to cite this article:
Gaurav Verma, Kamal Sharma, Aayush Gupta. Synthesis of Thermal Resistant and Transparent Al2O3 Reinforced Epoxy-Based Composite Coatings. Journal of Polymer and Composites. 2025; 13(03):178-183.
How to cite this URL:
Gaurav Verma, Kamal Sharma, Aayush Gupta. Synthesis of Thermal Resistant and Transparent Al2O3 Reinforced Epoxy-Based Composite Coatings. Journal of Polymer and Composites. 2025; 13(03):178-183. Available from: https://journals.stmjournals.com/jopc/article=2025/view=212156


Browse Figures

References

  1. Huang JQ, Liu K, Song X, Zheng G, Chen Q, Sun J, et al. Incorporation of Al2O3, GO, and Al2O3@GO nanoparticles into water-borne epoxy coatings: abrasion and corrosion resistance. RSC Adv. 2022 Aug 31;12(38):24804–20.
  2. Wang Y, Cheng Y. Early stage condensation frosting characteristics on plain and nano Al2O3-epoxy mixture-coated brass. Appl Therm Eng. 2019 Sep 1;160.
  3. Kaushal S, Zeeshan MD, Ansari MDI, Sharma D. Progress in tribological research of Al2O3 ceramics: A review. Mater Today Proc. 2023;82:163–7.
  4. Ouyang Y, Bai L, Tian H, Li X, Yuan F. Recent progress of thermal conductive ploymer composites: Al2O3 fillers, properties and applications. Compos Part A Appl Sci Manuf. 2022;152:106685.
  5. Lü FC, Ruan HO, Song JX, Yin K, Zhan ZY, Jiao YF, et al. Enhanced surface insulation and depressed dielectric constant for Al2O3/epoxy composites through plasma fluorination of filler. J Phys D Appl Phys. 2019 Feb 6;52(15).
  6. Yazman Ş, Uyaner M, Karabörk F, Akdemir A. Effects of nano reinforcing/matrix interaction on chemical, thermal and mechanical properties of epoxy nanocomposites. J Compos Mater. 2021;55(28):4257–72.
  7. de Souza JPB, Reis JML dos. A thermomechanical and adhesion analysis of epoxy/Al2O3 nanocomposites. Nanomaterials and Nanotechnology. 2015;5:18.
  8. Garg A, Basu S, Lee SY, Mahajan RL, Mehta R. Simplified One-Pot Synthesis of Graphene Oxide from Different Coals and its Potential Application in Enhancing the Mechanical Performance of GFRP Nanocomposites. ACS Appl Nano Mater. 2023;
  9. Garg A, Basu S, Mehta R, Mahajan RL. Enhancing the mechanical performance of E‐glass fiber epoxy composites using coal‐derived graphene oxide. Polym Compos [Internet]. 2023 Nov 20; Available from: https://4spepublications.onlinelibrary.wiley.com/doi/10.1002/pc.27931
  10. Nunna GP, Rosaiah P, Sangaraju S, Ramalingam G, Jwuiyad A, Adem S, et al. Mesostructured graphitic carbon nitride composites with silver nanoparticle decoration as the best visible-light-driven photocatalysts for dye degradation and H2 production. Colloids Surf A Physicochem Eng Asp. 2024;680:132615.
  11. Sen SK, Barman UC, Manir MS, Mondal P, Dutta S, Paul M, et al. X-ray peak profile analysis of pure and Dy-doped α-MoO3 nanobelts using Debye-Scherrer, Williamson-Hall and Halder-Wagner methods. Advances in Natural Sciences: Nanoscience and Nanotechnology. 2020;11(2):025004.
  12. Farahmandjou M, Khodadadi A, Yaghoubi M. Low Concentration Iron-Doped Alumina (Fe/Al2O3) Nanoparticles Using Co-Precipitation Method. J Supercond Nov Magn [Internet]. 2020;33:3425–32. Available from: https://doi.org/10.1007/s10948-020-05569-0
  13. Atta AM, Shaker NO, Maysour NE. Influence of the molecular structure on the chemical resistivity and thermal stability of cured Schiff base epoxy resins. Prog Org Coat. 2006;56(2–3):100–10.
  14. Liao D, Gu T, Liu J, Chen S, Zhao F, Len S, et al. Degradation behavior and ageing mechanism of E-glass fiber reinforced epoxy resin composite pipes under accelerated thermal ageing conditions. Compos B Eng. 2024;270:111131.
  15. Xian Y, Kang Z. Hydrogen bonds leading nanodiamonds performing different thermal conductance enhancement in different MWCNTs epoxy-based nanocomposites. Prog Org Coat. 2020;140:105486.
  16. Zhao S. Mechanical and thermal properties of nanoparticle filled epoxy nanocomposites. Rensselaer Polytechnic Institute; 2007.
  17. Zhao X, Zhang W, Wang Y, Liu Q, Yang J, Zhang L, et al. Fabrication of Al2O3 by anodic oxidation and hydrothermal synthesis of strong-bonding hydroxyapatite coatings on its surface. Appl Surf Sci. 2019;470:959–69.
  18. Bahgat Radwan A, Abdullah AM, Mohamed AMA, Al-Maadeed MA. New electrospun polystyrene/Al2O3 nanocomposite superhydrophobic coatings; synthesis, characterization, and application. Coatings. 2018;8(2):65.
Regular Issue Subscription Original Research
Volume 13
Issue 03
Received 07/05/2025
Accepted 21/05/2025
Published 26/05/2025
Publication Time 19 Days
206

Login


My IP

PlumX Metrics