Epoxy/ PVC/ Nanosilica Hybrid Coating as an Organic Coating with Enhanced Thermal Stability and Wear Resistance

Document Type : Research Paper


Faculty of Materials and Manufacturing Technologies, Malek Ashtar University of Technology, Tehran, Iran



Low resistance at high temperatures as well as low wear resistance are the limitations of polymer-based materials; therefore, to increase thermal stability and wear resistance of these materials, resistant coatings used to protect their surface in applications with good wear performance at high temperatures. The coating layer in this study includes epoxy resin mixed with polyvinyl chloride (PVC) as the organic phases, containing 5, 7.5, 10, 12.5, 15 and 17.5 %wt of the modified silica nanoparticles as inorganic phase are applied to polymeric substrates through dip-coating. Wear resistance, hardness and thermal gravimetry analysis (TGA) were used to evaluate the properties of applied hybrid coating. The results showed that the thermal stability of the substrate with Epoxy/PVC coating containing 12.5 %wt modified nanosilica had an increase up to 31.27% compared to the uncoated substrate. The hardness obtained in the uncoated substrate is 2H; While in substrates with coatings containing 12.5 and 15% wt of modified nanosilica increased to 6H. The wear rate of substrate with Epoxy/PVC hybrid coating containing 12.5 %wt of modified nanosilica had amount 75% reduce compared to the uncoated substrate. The results showed the potential ability of the formulated coating to enhance the working conditions of polymeric coating including high temperature and high wear conditions.


  1. Iqbal HMS, Stec AA, Patel P, Bhowmik S, Benedictus R. Study of the fire resistant behavior of unfilled and carbon nanofibers reinforced polybenzimidazole coating for structural applications. Polymers for Advanced Technologies. 2013;25(1):29-35.
  2. Friedrich K. Polymer composites for tribological applications. Advanced Industrial and Engineering Polymer Research. 2018;1(1):3-39.
  3. Heslehurst RB. Defects and Damage in Composite Materials and Structures. CRC Press; 2014.
  5. Fotovvati B, Namdari N, Dehghanghadikolaei A. On Coating Techniques for Surface Protection: A Review. Journal of Manufacturing and Materials Processing. 2019;3(1):28.
  6. Barroso G, Li Q, Bordia RK, Motz G. Polymeric and ceramic silicon-based coatings – a review. Journal of Materials Chemistry A. 2019;7(5):1936-63.
  7. Ceratti DR, Louis B, Paquez X, Faustini M, Grosso D. A New Dip Coating Method to Obtain Large-Surface Coatings with a Minimum of Solution. Advanced Materials. 2015;27(34):4958-62.
  8. Gans A, Dressaire E, Colnet B, Saingier G, Bazant MZ, Sauret A. Dip-coating of suspensions. Soft Matter. 2019;15(2):252-61.
  9. Ahmadi Z. Nanostructured epoxy adhesives: A review. Progress in Organic Coatings. 2019;135:449-53.
  10. Boumaza M, Khan R, Zahrani S. RETRACTED: An experimental investigation of the effects of nanoparticles on the mechanical properties of epoxy coating. Thin Solid Films. 2016;620:160-4.
  11. Zhang D, Wang J, Wen S, Wang P, Yin C, Du Z. Preparation of Silica Powder in Epoxy Resin Wear-Resistant Coating. Advances in Materials Physics and Chemistry. 2015;05(02):60-6.
  12. Nguyen TA, Nguyen TH, Nguyen TV, Thai H, Shi X. Effect of Nanoparticles on the Thermal and Mechanical Properties of Epoxy Coatings. Journal of Nanoscience and Nanotechnology. 2016;16(9):9874-81.
  13. Parimalam M, Islam MR, Yunus RM. Effects of nano- and micro-sized inorganic filers on the performance of epoxy hybrid nanocoatings. Polymers and Polymer Composites. 2018;27(2):82-91.
  14. Pan YT, Yuan Y, Wang DY, Yang R. An Overview of the Flame Retardants for Poly(vinyl chloride): Recent States and Perspective . Chinese Journal of Chemistry. 2020;38(12):1870-96.
  15. Klapiszewski Ł, Tomaszewska J, Skórczewska K, Jesionowski T. Preparation and Characterization of Eco-Friendly Mg(OH)₂/Lignin Hybrid Material and Its Use as a Functional Filler for Poly(Vinyl Chloride). Polymers (Basel). 2017;9(7):258.
  16. Barczewski M, Matykiewicz D, Sałasińska K, Kozicki D, Piasecki A, Skórczewska K, et al. Poly(vinyl chloride) powder as a low-cost flame retardant modifier for epoxy composites. International Journal of Polymer Analysis and Characterization. 2019;24(5):447-56.
  17. Shnawa HA, Khalaf MN, Jahani Y. Thermal degradation, dynamic mechanical and morphological properties of PVC stabilized with natural polyphenol-based epoxy resin. Polymer Bulletin. 2017;75(8):3473-98.
  18. Lakshmi RV, Bharathidasan T, Basu BJ. Superhydrophobic sol–gel nanocomposite coatings with enhanced hardness. Applied Surface Science. 2011;257(24):10421-6.
  19. Gao L, He J. Surface hydrophobic co-modification of hollow silica nanoparticles toward large-area transparent superhydrophobic coatings. Journal of Colloid and Interface Science. 2013;396:152-9.
  20. Lahijani YZK, Mohseni M, Bastani S. Utilizing Taguchi design of experiment to study the surface treatment of a nanosilica with an acrylic silane coupling agent and revealing the dispersibility of particles in a urethane acrylate resin. Journal of Coatings Technology and Research. 2013;10(4):537-47.
  21. Fernández-Álvarez M, Velasco F, Bautista A, Abenojar J. Effect of silica nanoparticles on the curing kinetics and erosion wear of an epoxy powder coating. Journal of Materials Research and Technology. 2020;9(1):455-64.
  22. Zhu X, Yao Y-t, Cheng Y, Deng X-m, Jiang J-h, Gu W-h. Research of high-hardness and wear-resistant SiO2 film coating on acrylic substrates. AOPC 2017: Optoelectronics and Micro/Nano-Optics; 2017/10/24: SPIE; 2017.
  23. Dittanet P, Pearson RA, Kongkachuichay P. Thermo-mechanical behaviors and moisture absorption of silica nanoparticle reinforcement in epoxy resins. International Journal of Adhesion and Adhesives. 2017;78:74-82.
  24. Wang Y, Wang J. Preparation of silica/epoxy hybrid polymers as sealing layers on ceramic coatings and their stability study upon thermal treatment. Journal of Applied Polymer Science. 2019;136(19):47481.
  25. Parimalam M, Islam MR, Yunus RM. Effects of nanosilica and titanium oxide on the performance of epoxy–amine nanocoatings. Journal of Applied Polymer Science. 2019;136(35):47901.