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

Result code in 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>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

10404 - Polymer science

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2019

Confidentiality

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