Papers - Archive

Nr 4/2016 - Abstracts

Elastomery nr 4/2016 cover

Monika Zielińska, Roger Seyger, Wilma K. Dierkes, Dariusz Bieliński, Jacques W.M. Noordermeer

Swelling of EPDM rubbers for oil-well applications as influenced by medium composition and temperature II. Experimental part

The first part of the paper describes the mechanism of interactions between hydrocarbon solvents and vulcanized rubber (representing crosslinked network structure). The problem has been discussed from the point of view of thermodynamic principles of swelling, temperature and material factors affecting swelling of filled rubber vulcanizates, as well as the impact of swelling on properties of the materials.
In the second part of the paper results of own research, devoted to swelling of sulphur vulcanizates of EPDM rubber in hydrocarbon solvents contained in mineral oils and fuels, or their mixture. Using headspace Gas Chromatography, the degree of swelling rubber vulvanizes by different components of solvent mixture in a function of temperature, has been determined.
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Aleksandra Smejda-Krzewicka, Władysław M. Rzymski

Use of coupling agent and precipitated silica in blends composed of styrene-butadiene and butadiene rubber

Use of the bis(trietoksysilylpropyl)tetrasulfide as coupling agent (CA) in the amount of 3,2-6,4 phr, connected with thermomechanical treatment (HT) of the premixes rubber-fillers-softener-CA, in the elastomer blends of in chain with ester groups (CF-SBR) or with N-methylpyrolidone on the chain end (EF-SBR) functionalized styrene-butadiene with cis-butadiene rubber (BR), filled by precipitated silica (BET = 130 m2/g) and smaller amount of carbon black (N 234) leads to materials showing acceptable stress-strain properties and abrasion resistance, improved ice (IG) and wet grip (WG), without increase in rolling resistance (RR). The best results, concerning IG and WG, were obtained for cured CF-SBR/BR and EF-SBR/BR blends, comparing to properties of cured blends containing standard SBR. This should be taken into account during preparation and processing of the rubber compounds used for the manufacturing of the tires threads.

Agnieszka Przybytek, Justyna Kucińska-Lipka, Helena Janik

Thermoplastic elastomer filaments and their application in 3D printing

The paper provides an overview on the materials used in the 3D printing technology (the Polish and foreign market) with a particular focus on flexible filaments and their possible application in the industry. There are described the techniques of 3D printing and modern filaments available on the market. There is observed the increase of interest in the production of products from filaments based on thermoplastic elastomers (TPE), including the applications in the electronics and medicine, especially in tissue engineering. Ability to modify the physical and mechanical properties of thermoplastic elastomers, combined with their unique elastic and processability properties, opens new possibilities for engineers, designers and bio-engineers.
The possibility to use new materials in 3D printing can contribute to faster development of research and accelerates implementation of innovative products.
The article in PDF file

Inez Kowalczyk, Magdalena Kwiatkowska, Zbigniew Rosłaniec

2,5-furandicarboxylic acid as a component of copolymers with elastomeric properties

The paper provides an overview on the knowledge on 2,5-furandicarboxylic acid, announced as one of the most promising bio-based monomer. Derived from polysaccharides, starch or lignocellulosic FDCA reveals a similarity in the chemical structure and reactivity to terephthalic acid (PTA) - the main petrochemical monomer for the synthesis of semicrystalline polyesters and ester block copolymers (TPE). The methods of its synthesis from biomass (polysaccharides, starch or lignocelluloses) was described, as well as potential applications, and current research on FDCA containing thermoplastic elastomers. As it is reported in literature the replacement of PTA by FDCA in ester rigid segments does not diminish copolymers performance. They retain the elastomeric behavior, and a processability typical for thermoplastics.
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