Study of the preparation of micronized zinc phosphate dihydrate with potential for application in the phosphating process

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21610%2F21%3A00352628" target="_blank" >RIV/68407700:21610/21:00352628 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.klok.cvut.cz/veda-a-vyzkum/konference/crrb-conference-on-rehabilitation-and-reconstruction-of-building/" target="_blank" >http://www.klok.cvut.cz/veda-a-vyzkum/konference/crrb-conference-on-rehabilitation-and-reconstruction-of-building/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Study of the preparation of micronized zinc phosphate dihydrate with potential for application in the phosphating process

Popis výsledku v původním jazyce

Damages caused by corrosion processes amounts to $ 2.5 trillion a year (3 to 4% of the gross domestic product of a developed country). These stunning costs suggest that corrosion is a pressing issue. The protection of metal parts against corrosion damage is one of the most comprehensive areas of industrial chemistry. Nowadays a wide range of methods is known methods is known to protect the surface from corrosive stimulators, such as atmospheric moisture, aggressive ions and molecular oxygen. A frequently used method of protection is the so-called phosphating (conversion steel surface treatment usually used as a base for organic topcoating). The most significant phosphating process are the tricationic phosphating. This method typically consists of baths which contain zinc dihydrogen phosphate and other cations, such as Zn2+, Co2+, Ni2+, Mg2+ and others, are usually used. The presence of the above-mentioned cations determines the formation of a high-quality coating, which can be further used as an anti-corrosion base for the application of coating systems. In particular, cobalt and nickel ions are classified as environmentally harmful and they are being actively excluded from industrial processes. The use of sufficiently micronized zinc phosphate dihydrate appears to be one of the possible approaches to significantly reduce or eliminate heavy metals from the phosphating process (µ-Zn3(PO2)2 . 2H2O). The micronized zinc phosphate dihydrate serves as a nucleus on the metal surface to form a sufficiently high-quality phosphate layer. The “Top-down” approach was chosen for the preparation of this form, where the varnish pigment (anti-corrosion pigment for primers significantly produced on a global scale) is used as the starting raw material. The study aims to find economically and procedurally optimal dispersion methodology with the possibility of use in the Czech Republic. In particular, the use of progressive grinding methods such as jet mills is emphasized.

Název v anglickém jazyce

Study of the preparation of micronized zinc phosphate dihydrate with potential for application in the phosphating process

Popis výsledku anglicky

Damages caused by corrosion processes amounts to $ 2.5 trillion a year (3 to 4% of the gross domestic product of a developed country). These stunning costs suggest that corrosion is a pressing issue. The protection of metal parts against corrosion damage is one of the most comprehensive areas of industrial chemistry. Nowadays a wide range of methods is known methods is known to protect the surface from corrosive stimulators, such as atmospheric moisture, aggressive ions and molecular oxygen. A frequently used method of protection is the so-called phosphating (conversion steel surface treatment usually used as a base for organic topcoating). The most significant phosphating process are the tricationic phosphating. This method typically consists of baths which contain zinc dihydrogen phosphate and other cations, such as Zn2+, Co2+, Ni2+, Mg2+ and others, are usually used. The presence of the above-mentioned cations determines the formation of a high-quality coating, which can be further used as an anti-corrosion base for the application of coating systems. In particular, cobalt and nickel ions are classified as environmentally harmful and they are being actively excluded from industrial processes. The use of sufficiently micronized zinc phosphate dihydrate appears to be one of the possible approaches to significantly reduce or eliminate heavy metals from the phosphating process (µ-Zn3(PO2)2 . 2H2O). The micronized zinc phosphate dihydrate serves as a nucleus on the metal surface to form a sufficiently high-quality phosphate layer. The “Top-down” approach was chosen for the preparation of this form, where the varnish pigment (anti-corrosion pigment for primers significantly produced on a global scale) is used as the starting raw material. The study aims to find economically and procedurally optimal dispersion methodology with the possibility of use in the Czech Republic. In particular, the use of progressive grinding methods such as jet mills is emphasized.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů