Effect of coupling and dispersant agents on behavior of silica filled rubber based on natural rubber

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F19%3A63524421" target="_blank" >RIV/70883521:28610/19:63524421 - 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

Effect of coupling and dispersant agents on behavior of silica filled rubber based on natural rubber

Popis výsledku v původním jazyce

Present work is focused on investigation of effect of coupling and dispersant agents on dispersibility of polar silica particles in non-polar Natural Rubber (NR). As coupling agent, widely used Bis[3-(triethoxysilyl)propyl] tetrasulfide (TESPT) was added into rubber compounds. For comparison of effect, Polyethylene Glycol (PEG) and Polypropylene Glycol (PPG) as dispersant agents from group of polyethers were used. Mechanical properties influenced by degree of silica filler dispersion were determined for uncured and cured rubber compounds. The Rubber Process Analyzer (RPA) was used to quantifying the changes in microstructure interaction of uncured rubber compounds. Mechanical properties of cured rubber were analyzed using tensile test machine. Finally, level of silica particles dispersion in rubber matrix was observed by a reflected light microscope DisperGRADER. It has been found, that addition of used additives leads to improve of dispersibility of silica particles in rubber matrix associated with improving mechanical properties. Rubber with addition of silane coupling agent exhibited significantly improved mechanical properties due to formation of durable chemical bonds between silica particles and elastomer chains whereas polyglycols creating hydrogen bonds with physical nature exhibited lower level of mechanical properties improvement compare to rubber without any coupling and dispersant additives.

Název v anglickém jazyce

Effect of coupling and dispersant agents on behavior of silica filled rubber based on natural rubber

Popis výsledku anglicky

Present work is focused on investigation of effect of coupling and dispersant agents on dispersibility of polar silica particles in non-polar Natural Rubber (NR). As coupling agent, widely used Bis[3-(triethoxysilyl)propyl] tetrasulfide (TESPT) was added into rubber compounds. For comparison of effect, Polyethylene Glycol (PEG) and Polypropylene Glycol (PPG) as dispersant agents from group of polyethers were used. Mechanical properties influenced by degree of silica filler dispersion were determined for uncured and cured rubber compounds. The Rubber Process Analyzer (RPA) was used to quantifying the changes in microstructure interaction of uncured rubber compounds. Mechanical properties of cured rubber were analyzed using tensile test machine. Finally, level of silica particles dispersion in rubber matrix was observed by a reflected light microscope DisperGRADER. It has been found, that addition of used additives leads to improve of dispersibility of silica particles in rubber matrix associated with improving mechanical properties. Rubber with addition of silane coupling agent exhibited significantly improved mechanical properties due to formation of durable chemical bonds between silica particles and elastomer chains whereas polyglycols creating hydrogen bonds with physical nature exhibited lower level of mechanical properties improvement compare to rubber without any coupling and dispersant additives.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10404 - Polymer science

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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