Abstract
This paper discusses the curing behaviors, mechanical and dynamical properties of composites containing chloroprene rubber (CR) and butadiene rubber (BR) reinforced with mineral fillers. The iron(III) oxide nanoparticles were used as a crosslinking agent of the CR/BR blends. The research aimed to evaluate the effectiveness of nano-iron(III) oxide (nano-Fe2O3) as a new crosslinking agent while producing elastomeric materials with good mechanical properties and reduced flammability. The CR/BR (chloroprene rubber/butadiene rubber) blends were filled with silicas from natural resources (chalcedony, Neuburg silica earth) or silicas used in elastomer technology in many fields (aerosil, ultrasil). The results revealed that all composites were characterized by satisfactory tensile strength, tear resistance, and high resistance to fire. The filler dispersion in the elastomer matrix was carried out by using scanning electron microscopy (SEM), while the possibility of the filler–filler or filler–rubber interaction in the designed compositions was determined using the Payne effect and the Mullins effect.
Highlights
Polymer nanocomposites represent a class of materials that have assumed great importance in recent years and are the focus of extensive research
The highest Payne effect was obtained for vulcanizate filled with ultrasil (∆G = 898,076 Pa), which proves the possibility of creating a structure by the filler particles
The low value of the Payne effects in the case of a sample filled with aerosil, which belongs to active fillers, may indicate good filler dispersion in the elastomeric matrix, as well as the possibility of filler–filler or filler–rubber interactions
Summary
Polymer nanocomposites represent a class of materials that have assumed great importance in recent years and are the focus of extensive research. The incorporation of the nano-sized iron(II,III) oxide into the elastomeric matrix improves the mechanical properties of the obtained vulcanizates, this compound changes the magnetic properties [3]. The use of iron(III) oxide nanoparticles as a filler of silicone rubber results in an improvement in the strength properties of products. The copper(II) oxide nanoparticles as nanofillers of the polyvinyl alcohol (PVA) have been investigated by Rao et al The incorporation of the nanofiller into the PVA matrix improves the mechanical properties (elastic modulus, toughness, tensile strength). In this article, we decided to use the nano-iron(III) oxide as a crosslinking agent for the CR/BR blends and to investigate the effect of the nano-Fe2O3 on the functional properties of the obtained products. The CR/BR blends were filled with silicas from natural resources (chalcedony, Neuburg silica earth) or silicas (aerosil, ultrasil) used in elastomer technology in many fields
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