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 |
| Publication status | Published - Dec 1 2018 |
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Keywords
- Aluminium pigments
- Coatings
- Encapsulation
- Sol-gel process
ASJC Scopus subject areas
- Chemistry(all)
Cite this
The treatment of aluminium pigments with inorganic polymers for environment-friendly applications. / Dragnea, Draga; Gudovan, Dragos; Zaharia, Elena; Bildea, Costin-Sorin.
In: Revista de Chimie, Vol. 69, No. 12, 01.12.2018, p. 3353-3360.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The treatment of aluminium pigments with inorganic polymers for environment-friendly applications
AU - Dragnea, Draga
AU - Gudovan, Dragos
AU - Zaharia, Elena
AU - Bildea, Costin-Sorin
PY - 2018/12/1
Y1 - 2018/12/1
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
UR - http://www.scopus.com/inward/record.url?scp=85062656406&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85062656406&partnerID=8YFLogxK
M3 - Article
VL - 69
SP - 3353
EP - 3360
JO - Revista de Chimie
JF - Revista de Chimie
SN - 0034-7752
IS - 12
ER -