Właściwości karboksylowanego kauczuku butadienowo-akrylonitrylowego usieciowanego za pomocą układu ZnO/SiO2

M. Zaborski; M. Owczarek; T. Paryjczak; A. Kaźmierczak

Published : 2022-09-18

Vol. 47 No. 5 (2002)

Properties of ZnO/SiO2 cross-linked butadiene-acrylonitrile rubber

M. Zaborski M. Owczarek T. Paryjczak A. Kaźmierczak

Abstract

Properties of novel core-shell elastomer filler were investigated. The filler comprised precipitated silica with zinc oxide surface modification (ZnO/SiO2) and was characterized by different surface properties, rheological properties on suspending in paraffin oil and oil number (dibutyl phthalate adsorption) as compared with unmodified silica. The ZnO/SiO2 systems (containing up to 20% ZnO) were used to fill and cross-link a carboxylated butadiene-acrylonitrile rubber (XNBR). Zinc oxide alone proved to be a less effective crosslinking agent as compared with ZnO modified silica. Vulcanizates received using the ZnO/SiO2 systems contained unconventional crosslink nodes disintegrating under ethylenediamine, chloroform and acetic acid treatment. IR spectra confirmed presence of interactions between rubber carboxyl groups and the crosslinking/filler systems investigated. Physical relaxation at ambient temperature confirmed influence of non-covalent crosslinks on stress dissipation in the vulcanizate. DMTA showed existence of a second maximum related with presence of ion cross-links in vulcanizates containing the modified silica. Elastomers cross-linked with the ZnO/SiO2 System had better mechanical properties than those cross-linked with dicumyl peroxide (Table 5).

Keywords

napełniacze typu "jądro-powłoka" ; krzemionka modyfikowana tlenkiem cynku ; kauczuk butadienowo-akrylonitrylowy ; niekowalencyjne węzły sieci ; właściwości mechaniczne ; relaksacja naprężeń core-shell fillers ; zinc oxide modified silica ; butadiene-acrylonitrile rubber ; unconventional cross-link nodes ; mechanical properties ; stress relaxation

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Zaborski, M., Owczarek, M., Paryjczak, T., & Kaźmierczak, A. (2022). Properties of ZnO/SiO2 cross-linked butadiene-acrylonitrile rubber. Polimery, 47(5), 339–346. Retrieved from https://polimery.ichp.vot.pl/index.php/p/article/view/1979

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M. Zaborski polimery@ichp.pl

Affiliation
Politechnika Wrocławska, Inst Technologii Organicznej i Tworzyw Sztucznych, ul. Wybrzeże Wyspiańskiego 27, 50370 Wrocław, Poland

M. Owczarek

T. Paryjczak

A. Kaźmierczak