A Practical Approach to Cleaning Molds from Rubber Residues

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F22%3A63557438" target="_blank" >RIV/70883521:28110/22:63557438 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1109/CSCC55931.2022.00061" target="_blank" >http://dx.doi.org/10.1109/CSCC55931.2022.00061</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/CSCC55931.2022.00061" target="_blank" >10.1109/CSCC55931.2022.00061</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A Practical Approach to Cleaning Molds from Rubber Residues

Popis výsledku v původním jazyce

In this paper, methods of fouling prevention and cleaning of the molds from vulcanized rubber residues are presented. The surface free energy of mold surfaces has been measured and the mold release agents were compared by measuring the force needed for the release of the form. The efficiency of sodium hydroxide solvent currently used for mold cleaning in industrial practice is compared with an acid-based solvent. The effect of the acid on the mold surface is monitored as well. The relative mass loss and the change in the surface roughness parameters Sa and Sz were evaluated during the corrosion testing in the acid at various temperatures. The mold wear during a year of use in the company, and a year of continuous acid exposure was then extrapolated for steel and stainless-steel molds. Nitric acid was significantly more effective than NaOH in dissolving rubber with full dissolution occurring after 3 h at 80°C when stirred, losing 33 % of its initial mass, while NaOH lost only 0.3 % after 24 h. Stainless steel proved very resistant to acid corrosion at 50°C with a calculated loss of 0.003 cm of thickness per year of submersion, while 1.7131 steel would lose 0.264 cm of thickness.

Název v anglickém jazyce

A Practical Approach to Cleaning Molds from Rubber Residues

Popis výsledku anglicky

In this paper, methods of fouling prevention and cleaning of the molds from vulcanized rubber residues are presented. The surface free energy of mold surfaces has been measured and the mold release agents were compared by measuring the force needed for the release of the form. The efficiency of sodium hydroxide solvent currently used for mold cleaning in industrial practice is compared with an acid-based solvent. The effect of the acid on the mold surface is monitored as well. The relative mass loss and the change in the surface roughness parameters Sa and Sz were evaluated during the corrosion testing in the acid at various temperatures. The mold wear during a year of use in the company, and a year of continuous acid exposure was then extrapolated for steel and stainless-steel molds. Nitric acid was significantly more effective than NaOH in dissolving rubber with full dissolution occurring after 3 h at 80°C when stirred, losing 33 % of its initial mass, while NaOH lost only 0.3 % after 24 h. Stainless steel proved very resistant to acid corrosion at 50°C with a calculated loss of 0.003 cm of thickness per year of submersion, while 1.7131 steel would lose 0.264 cm of thickness.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název statě ve sborníku

2022 26th International Conference on Circuits, Systems, Communications and Computers (CSCC)

ISBN

978-1-66548-186-1

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

316-321

Název nakladatele

IEEE Computer Society Conference Publishing Services (CPS)

Místo vydání

Washington, DC

Místo konání akce

Chania

Datum konání akce

19. 7. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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