The treatment of aluminium pigments with inorganic polymers for environment-friendly applications

Draga Dragnea; Dragos Gudovan; Elena Zaharia; Costin Sorin Bildea

doi:10.37358/rc.18.12.6748

The treatment of aluminium pigments with inorganic polymers for environment-friendly applications

Draga Dragnea, Dragos Gudovan, Elena Zaharia, Costin Sorin Bildea

School of Engineering and Digital Sciences

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Aluminium pigments are used in industrial and decorative coatings, automotive industry and printing inks. The encapsulation of aluminium pigments is used because the industry wants to avoid the organic solvents, for environmental reasons, by shifting towards water-borne systems. However, aluminium pigments easily react with water and a large amount of hydrogen is released leading to degradation of optical properties. This work presents experimental results concerning the encapsulation of aluminium pigments in silica matrices, by a sol-gel method using TEOS as precursor and ethylendiamine or ammonia as catalysts for the hydrolysis and condensation reactions. The samples of encapsulated pigments were characterized by gas stability tests: a boiling method and a gassing method.

Original language	English
Pages (from-to)	3353-3360
Number of pages	8
Journal	Revista de Chimie
Volume	69
Issue number	12
DOIs	https://doi.org/10.37358/rc.18.12.6748
Publication status	Published - Dec 2018

Keywords

Aluminium pigments
Coatings
Encapsulation
Sol-gel process

ASJC Scopus subject areas

Chemistry(all)
Materials Science (miscellaneous)
Engineering(all)
Surfaces, Coatings and Films
Materials Chemistry

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title = "The treatment of aluminium pigments with inorganic polymers for environment-friendly applications",

abstract = "Aluminium pigments are used in industrial and decorative coatings, automotive industry and printing inks. The encapsulation of aluminium pigments is used because the industry wants to avoid the organic solvents, for environmental reasons, by shifting towards water-borne systems. However, aluminium pigments easily react with water and a large amount of hydrogen is released leading to degradation of optical properties. This work presents experimental results concerning the encapsulation of aluminium pigments in silica matrices, by a sol-gel method using TEOS as precursor and ethylendiamine or ammonia as catalysts for the hydrolysis and condensation reactions. The samples of encapsulated pigments were characterized by gas stability tests: a boiling method and a gassing method.",

keywords = "Aluminium pigments, Coatings, Encapsulation, Sol-gel process",

author = "Draga Dragnea and Dragos Gudovan and Elena Zaharia and Bildea, {Costin Sorin}",

note = "Funding Information: Acknowledgement: The financial support of the project Innovative processes for encapsulation of aluminium pigments in polymer matrices, PN-II-PT-PCCA-2013-4-2069, contract 233/2014 is gratefully acknowledged Publisher Copyright: {\textcopyright} 2018 SYSCOM 18 S.R.L. All Rights Reserved.",

year = "2018",

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AU - Dragnea, Draga

AU - Gudovan, Dragos

AU - Zaharia, Elena

AU - Bildea, Costin Sorin

N1 - Funding Information: Acknowledgement: The financial support of the project Innovative processes for encapsulation of aluminium pigments in polymer matrices, PN-II-PT-PCCA-2013-4-2069, contract 233/2014 is gratefully acknowledged Publisher Copyright: © 2018 SYSCOM 18 S.R.L. All Rights Reserved.

PY - 2018/12

Y1 - 2018/12

N2 - Aluminium pigments are used in industrial and decorative coatings, automotive industry and printing inks. The encapsulation of aluminium pigments is used because the industry wants to avoid the organic solvents, for environmental reasons, by shifting towards water-borne systems. However, aluminium pigments easily react with water and a large amount of hydrogen is released leading to degradation of optical properties. This work presents experimental results concerning the encapsulation of aluminium pigments in silica matrices, by a sol-gel method using TEOS as precursor and ethylendiamine or ammonia as catalysts for the hydrolysis and condensation reactions. The samples of encapsulated pigments were characterized by gas stability tests: a boiling method and a gassing method.

AB - Aluminium pigments are used in industrial and decorative coatings, automotive industry and printing inks. The encapsulation of aluminium pigments is used because the industry wants to avoid the organic solvents, for environmental reasons, by shifting towards water-borne systems. However, aluminium pigments easily react with water and a large amount of hydrogen is released leading to degradation of optical properties. This work presents experimental results concerning the encapsulation of aluminium pigments in silica matrices, by a sol-gel method using TEOS as precursor and ethylendiamine or ammonia as catalysts for the hydrolysis and condensation reactions. The samples of encapsulated pigments were characterized by gas stability tests: a boiling method and a gassing method.

KW - Aluminium pigments

KW - Coatings

KW - Encapsulation

KW - Sol-gel process

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The treatment of aluminium pigments with inorganic polymers for environment-friendly applications

Abstract

Keywords

ASJC Scopus subject areas

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