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

Result code in 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>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
PTFE- based coating for moulds of aluminium alloys used in rubber vulcanization for tire production and method of production
Original language description
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.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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