Papers - Archive

Nr 4/2013 - Abstracts

Elastomery nr 4/2013 cover

Aleksandra Smejda-Krzewicka, Władysław M. Rzymski, Mateusz Błaszczak

Zinc oxide and nano-zinc oxide in cross-linking of styrene-butadiene rubber and chlorosulfonated polyethylene blends

Blends of styrene-butadiene rubber and chlorosulfonated polyethylene (SBR/CSM) were studied. The blends were heated in the presence of a metal ion donor (zinc oxide, ZnO, or nano zinc oxide, nZnO). The influence of the ZnO and nZnO amount on the cross-linking of SBR/CSM blends (78/22 by wt.) and on the properties of obtained products were investigated. It was found that the cross-linking proceeds as a results of Friedel-Crafts alkylation of the SBR phenyl rings by chlorosulfonated polyethylene (CSM). This reaction is catalyzed by Lewis acid (ZnCl2), in situ generated in the reaction of CSM as a polymeric polyhalide with a metal oxide (ZnO, nZnO). In situ formed Lewis acid acts as a low molecular weight initiator of SBR alkylation with CSM, and consequently forces the interpolymer reactions between SBR and CSM. It leads to the formation of the interelastomeric network. The influence of layered bentonite modified with quaternary ammonium salt (nanofiller ZS-1) or kaolin on the curing of SBR/CSM blends heated in the presence of ZnO or nZnO was determined too. It was found that the ZS-1 added to blends reduces the flammability of SBR/CSM blends heated in the presence of nZnO or ZnO, while the presence of kaolin as a filler does not change the flammability of obtained products.

Zbigniew Czech, Dominika Sowa, Jagoda Kowalska, Paulina Ragańska, Bożena Tyliszczak

Self-adhesive transfer hydrogel tapes crosslinked by the use of UV radiation

Self-adhesive transfer tapes in form of polymer films crosslinked using UV radiation based on acrylics are prepared in ethyl acetate through radical polymerization of monomers mixture containing butyl acrylate (BA), acrylic acid (AA) and unsaturated photoinitiator 4-acryloyloxy benzophenone (ABP) at presence of radical starter AIBN. The acrylic copolymers were determined by viscosity and GPC analysis and later modified using ethoxylated amines. As crosslinking monomer was used 4-acryloyloxy benzophenone (ABP). After UV-initiated crosslinking the properties of these newly synthesized hydrogels, such as tack, peel adhesion, shears strength, elongation and swelling phenomena (water absorption) were also studied.

Tatiana Brzozowska, Janusz Zieliński, Grzegorz Makomaski

The influence of styrene-butadiene-styrene block copolymer on the properties of asphalt

This work shows the results of studiem on the influence of SBS copolymer on the properties and structure of road asphalt. Basing on the studies of softening and breaking point, penetration, elastic recovery, dynamic viscosity as a function of temperature, differential scanning calorimetry and fluorescence microscopy was evaluated of the physicochemical, rheological and thermal properties and structure of modified asphalt.

Yu.O. Andriasyan, I.A. Mikhaylov, A.L. Belousova, G.E. Zaikov, A.E. Kornev, A.A. Popov

Properties of fluorine-containing natural rubber and butyl rubber, obtained by method mechanochemical halide modification

Taking into account modern requirements a new alternative technology of obtaining fluorine-containing elastomers based on solid-phase (mechanochemical) halide modification was created. New fluorine-containing rubbers produced by this technology proved themselves in the conditions of the rubber production. The new alternative technology of obtaining fluorine-containing elastomers, based on mechanochemical halide modification was created taking into account current requirements. New fluorine-containing cauotchoucs, obtained by given technology, showed yourself to good advantage in condition of rubber’s production.

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