Bazyláková, Tatiana

Olšovský, Milan

Ondrušová, Darina

Pajtášová, Mariana

Petrášová, Veronika

Ľalíková, Slávka

English

DSpace at VSB Technical University of Ostrava

l I I 1\1 L I tSborník vědeckých prací Vysoké školy báňské - Technické univerzity Ostrava číslo 3, rok 2009, ročník LU, řada hutnická, článek č. 154 7 Slávka CALÍKOV Á, Mariana PAJTÁŠOVÁ, Darina ONDRUŠOVÁ, Tatiana BAZYLÁKOV Á, Milan OLŠOVSKÝ, Veronika PETRÁŠOVÁ STUDY OF POLYMER COMPOUNDS WITH USING OF MONTMORJLLONITE FILLER STUDIUM POLYMERŮ S MONTMORILLONITOVÝM PLNIVEM Department of Inorganic Materials and Environmental Engineering, Faculty of Industrial Technologies, University of Trenčín, 02001 Púchov, Slovakia, e-mail:lalikova@fpt.tnuni.sk Abstract The present work studies a one of the possible applications of inorganic substances, specifically of natural clays and their use in rub ber technology. ln a function of reinforcement filler at the preparation of modified polymer compounds was used a natural form of bentonite, which was submitted to measurements ofthennal (DTA, TG, DSC) and spectral (IR) methods. The influence of type and quantity of the used filler was evaluated by a determination of cure characteristics and physical-mechanical properties at the final vulcanizates. The measured values were compared with the values of commercially used polymer materials with the original composition. Key words: bentonite, montmorillonite, fillers, physical-mechanical properties, cure characteristics 1. lntroductionPolymer nanocomposites, which represent a new alternative of conventionally filled polymers,are recognized as one of the most promising research areas in polymer science and technology in the 21. cen tury [ 1]. Polymer nanocomposites exhibit markedly improved properties when compared tothe pure polymers or their traditional composites. These improvements at the polymernanocomposites are connected with the aspect ratio. of fillers, their degree of dispersion andorientation in the matrix, and with the adhesion of the fillers to the matrix interface [2]. The mostcommon nano-sized fillers are carbon nanotubes, nanosized particles and intercalated layers [3].Thecontents of fillers on the basis of layered silicates are relatively low in the range 2 - 6 wt. %, what isa big positive in compare with a high degree of filling, which is typical for conventional used fillers[4]. Besides increased modulus and strength, other factors such as tear properties, fracture toughnessand abrasion resistance are claimed to be improved as a result of clay addition to rubber [5-7). Whileclay nanocomposites have been investigated in combination with many thermoplastics andthermosetting polymers, much Iess attention has been paid to the elastomers as matrices [8-11 ].2. ExperimentalMaterialsNatural rubber of type SMR-20, which was used as the elastomeric matrix was obtained fromMalaysia. The natural bentonite, which was used in a function of reinforcement filler is a commercial product of Slovak firm Envigeo, a. s., specifically from deposit in the area of Lieskovec. The size of particles of this bentonite product was less than 0,045 mm. Carbon black of type N660 was used as the conventional filler. The others ingredients and their used amounts are mentioned in Tahle 1. Ail agents were used directly without any further purification and modification. 123 

Studium polymerů s montmorillonitovým plnivem

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Studium polymerů s montmorillonitovým plnivem

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