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Effect of precursors on the anti-corrosion property of silica encapsulated waterborne aluminium pigments

Zhiling Ma (College of Chemistry and Environmental Science, Hebei University, Baoding, China)
Yanjun Qiao (College of Chemistry and Environmental Science, Hebei University, Baoding, China)
Yajing Wen (College of Chemistry and Environmental Science, Hebei University, Baoding, China)
Xianling Wang (College of Chemistry and Environmental Science, Hebei University, Baoding, China)
Jing Wang (College of Chemistry and Environmental Science, Hebei University, Baoding, China)

Pigment & Resin Technology

ISSN: 0369-9420

Article publication date: 6 March 2017

144

Abstract

Purpose

This paper aims to evaluate the effect of precursors on the anticorrosion property of silica encapsulated waterborne aluminium pigments (WBAPs).

Design/methodology/approach

The silica encapsulated WBAPs were prepared using different siloxanes as precursors. The anchorage and compactness of silica films on aluminium flakes were characterized by optical microscopy, scanning electron microscopy and N2 adsorption-desorption. The anticorrosion property and glossiness of WBAPs were evaluated.

Findings

The effect of precursors on anticorrosion property of silica encapsulated WBAPs is reflected from the anchorage and the compactness of silica on aluminium flakes surface. Furthermore, the structure of γ-aminopropyl triethoxysilane benefits the anchorage and the compatibility between pigment and acrylic resin. Neither high nor low ratio of tetraethoxysilane/γ-aminopropyl triethoxysilane is favourable to the anchorage and formation of dense silica film on the aluminium flakes surface. To obtain perfect WBAP, the precursors of silica must be carefully selected.

Research limitations/implications

Only four kinds of precursors were used in this work; other precursors could also be studied.

Practical implications

The investigation results provide theoretical basis to obtain excellent WBAPs.

Originality/value

The method to investigate anticorrosion property of WBAPs that is based on the effect of precursors on the performance of silica was novel.

Keywords

Acknowledgements

This work is funded by the National Natural Science Foundation of China (Grant No. 51302061), Natural Science Foundation of Hebei province (Grant No. E2014201076) and National Innovative Training Program of College Students (Grant No. 201510075011).

Citation

Ma, Z., Qiao, Y., Wen, Y., Wang, X. and Wang, J. (2017), "Effect of precursors on the anti-corrosion property of silica encapsulated waterborne aluminium pigments", Pigment & Resin Technology, Vol. 46 No. 2, pp. 100-106. https://doi.org/10.1108/PRT-02-2016-0017

Publisher

:

Emerald Publishing Limited

Copyright © 2017, Emerald Publishing Limited

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