Effect of zirconia nanoparticles modified by silane coupling agent on some properties of epoxy coating

Dao Phi Hung, Nguyen Thuy Chinh, Nguyen Anh Hiep, Nguyen Xuan Thai, Ly Thi Ngoc Lien, Dao Huu Toan, Hoang Thi Huong Giang, Thai Hoang
Author affiliations

Authors

  • Dao Phi Hung Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
  • Nguyen Thuy Chinh Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
  • Nguyen Anh Hiep Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
  • Nguyen Xuan Thai Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
  • Ly Thi Ngoc Lien Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam
  • Dao Huu Toan Chu Van An High School, 10 Thuy Khue, Tay Ho, Ha Noi, Viet Nam
  • Hoang Thi Huong Giang Faculty of Chemistry, Ha Noi National University of Education, 136 Xuan Thuy, Cau Giay, Ha Noi, Viet Nam
  • Thai Hoang Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Viet Nam

DOI:

https://doi.org/10.15625/2525-2518/16999

Keywords:

epoxy coating, zirconia nanoparticles, modified nanoparticles, anti-corrosion, silane coupling agent

Abstract

Effect of zirconia nanoparticles (zirconia NPs/ZrO2 NPs) modified by 3 wt.% (glycidyloxypropyl) triethoxysilane – GPTES (m-ZrO2 NPs) on some properties of epoxy coating such as mechanical properties, thermal stability and anti-corrosion performance was investigated. The obtained results indicated that the addition of zirconia nanoparticles to epoxy coating could enhance the properties of this coating. The addition of 2 wt.% of pure ZrO2 NPs (u-ZrO2 NPs) to the epoxy matrix could increase the mechanical properties (hardness and adhesion to the steel substrate) by approximately 10 %, the onset temperature of thermal degradation of the epoxy/u-ZrO2 NPs coating was 4.4 oC higher, and the anti-corrosion performance of epoxy coating was improved in comparison with the neat epoxy coating. Organically modified ZrO2 NPs had higher improvement for epoxy coating’s properties than pure ZrO2 NPs. The epoxy coating filled with m-ZrO2 NPs had 19.7 % higher in relative hardness, 88.73 % more in adhesion to steel substrate, 25.6 oC higher in the onset temperature of thermal degradation, and higher anti-corrosion performance in comparison with the epoxy coating filled with 2 wt.% of pure zirconia nanoparticles. The cross-section FESEM images of the epoxy/m-ZrO2 NPs coating showed that m-ZrO2 NPs could regularly disperse in epoxy polymer matrix while unmodified zirconia nanoparticles (u-ZrO2 NPs) were agglomerated to big cluster in the epoxy coating. This was the reason for the high performance of the epoxy coating filled with zirconia NPs modified by GPTES.

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Published

31-08-2022

How to Cite

[1]
Dao Phi Hung, “Effect of zirconia nanoparticles modified by silane coupling agent on some properties of epoxy coating”, Vietnam J. Sci. Technol., vol. 60, no. 4, pp. 664–674, Aug. 2022.

Issue

Vol. 60 No. 4 (2022)

Section

Materials

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