Preparation of SiO2 solvent-free nanofluids for modification of commercial corrosion-resistant coatings

Yan Xiao, Jinliang Xie, Jing Guo, Zheshen Mu, Dongdong Yao, Yaping Zheng

Research output: Contribution to journalArticlepeer-review

Abstract

The development of a corrosion-resistance surface on a desired industrial coating is a challenge in several industries. In the aerospace industry, it is necessary to modify the corrosion-resistant coating to address the susceptibility of damage during flight for aviation applications. The present study tested three types of commercially available corrosion-resistant coatings for aviation, and the coating with the best overall performance was modified to enhance its mechanical properties to prevent coating damage due to impacts from raindrops and sand during flight. Silica (SiO2) nanoparticles with an approximate particle size of 50 nm were prepared by the sol-gel method using tetraethyl orthosilicate (TEOS). The KH560 silane coupling agent, as the neck layer and the M2070 polyether amine as the crown layer, were covalently bonded and then grafted onto the surface of the nano-SiO2 core to obtain a core-shell structure of the SiO2 solvent-free nanofluid (SiO2@KH560-M2070). The tensile property of the polyurethane coating was improved when a small amount of the SiO2 solvent-free nanofluid was incorporated into the coating. The present study has theoretical and practical guiding significance for the selection and spraying of existing aircraft radome coatings.

Original languageEnglish
Pages (from-to)579-592
Number of pages14
JournalJournal of Rubber Research
Volume27
Issue number4
DOIs
StatePublished - Oct 2024

Keywords

  • Corrosion-resistance aerospace coating
  • Polyurethane
  • SiO solvent-free nanofluids
  • Tensile property

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