PTFE- based coating for moulds of aluminium alloys used in rubber vulcanization for tire production and method of production

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13420%2F21%3A43896577" target="_blank" >RIV/44555601:13420/21:43896577 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

PTFE- based coating for moulds of aluminium alloys used in rubber vulcanization for tire production and method of production

Popis výsledku v původním jazyce

The present invention relates to PTFE-based coatings for moulds made of aluminium alloys used in rubber vulcanization for tire production. The PTFE coating contains uniformly distributed TiO2 particles and has total thickness of 20 to 25 ?m. Furthermore, it relates to a method for producing coatings for aluminium-alloy moulds, in which nanoparticles are prepared form titanium dioxide tablets, which are ground. Then, the mould surface is degreased and decontaminated in a bath at temperature of 50-55 oC and pH of 11.0-12.5 for 2-3 minutes, rinsed in demineralized water at temperature of 20-30 oC and coated in a bath containing 0.5% hexafluorozirconium acid at a temperature of 25-30 oC and pH 4.8-5.2 for 1-2 minutes. Further, it is rinsed in demineralised water at a temperature of 20-30 oC and dried at a temperature of 110-115 oC for 20-25 minutes, then coated in a bath containing aqueous-based polytetrafluoroethylene dispersion with a content of TiO2 particles, dispersible in water, and with up to 5% of non-ionic surfactant at a temperature of 60-65 oC and pH of 7.5-8.5 for 15-16 minutes. Then, it is dried without rinsing at temperature of 80-120 oC for 30-40 minutes.

Název v anglickém jazyce

PTFE- based coating for moulds of aluminium alloys used in rubber vulcanization for tire production and method of production

Popis výsledku anglicky

The present invention relates to PTFE-based coatings for moulds made of aluminium alloys used in rubber vulcanization for tire production. The PTFE coating contains uniformly distributed TiO2 particles and has total thickness of 20 to 25 ?m. Furthermore, it relates to a method for producing coatings for aluminium-alloy moulds, in which nanoparticles are prepared form titanium dioxide tablets, which are ground. Then, the mould surface is degreased and decontaminated in a bath at temperature of 50-55 oC and pH of 11.0-12.5 for 2-3 minutes, rinsed in demineralized water at temperature of 20-30 oC and coated in a bath containing 0.5% hexafluorozirconium acid at a temperature of 25-30 oC and pH 4.8-5.2 for 1-2 minutes. Further, it is rinsed in demineralised water at a temperature of 20-30 oC and dried at a temperature of 110-115 oC for 20-25 minutes, then coated in a bath containing aqueous-based polytetrafluoroethylene dispersion with a content of TiO2 particles, dispersible in water, and with up to 5% of non-ionic surfactant at a temperature of 60-65 oC and pH of 7.5-8.5 for 15-16 minutes. Then, it is dried without rinsing at temperature of 80-120 oC for 30-40 minutes.

Druh

P - Patent

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Číslo patentu nebo vzoru

EP3560670B1

Vydavatel

EPO_1 -

Název vydavatele

European Patent Office

Místo vydání

Munich, The Hague, Berlin, Vienna, Brussels

Stát vydání

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Datum přijetí

13. 10. 2021

Název vlastníka

UJEP Ústí nad Labem

Způsob využití

A - Výsledek využívá pouze poskytovatel

Druh možnosti využití

A - K využití výsledku jiným subjektem je vždy nutné nabytí licence