With the continuing growth of waste sulfur production from petroleum industry processes, its utilization for useful, low-cost, and environmentally beneficial materials is primary interest. Elemental has a significant established history in modification bitumen binders, while sulfur-containing high-molecular compounds are limited this field. Herein, we report novel possibility to utilize sulfur/organic copolymers obtained via inverse vulcanization process as modifiers binders. Synthesis...

The aim of this work is to describe the changes in properties ceramifiable silicone rubber-based composites caused by incorporation novel alternative minerals comparison other popular, widely utilized fillers. TiO2, calcined kaolin and calcium-based mix (CbMix) consisting CaO (6.26 wt%), CaCO3 (26.18 wt%) Ca(OH)2 (67.56 have not been considered as a dispersed phase destined for wire covers yet. Mineral fillers: TiO2 (anatase), mica (phlogopite), CbMix, CaCO3, Al(OH)3, affect processing...

The aim of this article was to compare the biomechanical properties commercial composites containing different photoinitiators: Filtek Ultimate (3M ESPE) camphorquinone (CQ); Estelite Σ Quick (Tokuyama Dental) with CQ in RAP Technology®; Tetric EvoCeram Bleach BLXL (Ivoclar Vivadent AG) and Lucirin TPO; Evoceram Powerfill IVB Ivocerin TPO. All samples were cured a polywave Valo Lamp (Ultradent Products Inc.) 1450 mW/cm2. microhardness, hardness by Vicker's method, diametral tensile strength,...

The paper presents the test results of effect modified graphene and multi-wall carbon nanotubes on thermal mechanical properties flammability acrylic rubber styrene-butadiene rubber. rubbers were cross-linked with use organic peroxide. Based obtained by optic AFM methods, a relationship between surface morphology nanocomposites was presented. By means analysis methods (TG, DTG, DTA) micro-calorimeter, it has been found that nanofillers used considerably increase stability decrease...

Ceramifiable styrene-butadiene (SBR)-based composites containing low-softening-point-temperature glassy frit promoting ceramification, precipitated silica, one of four thermally stable refractory fillers (halloysite, calcined kaolin, mica or wollastonite) and a sulfur-based curing system were prepared. Kinetics vulcanization basic mechanical properties analyzed added as Supplementary Materials. Combustibility the was measured by means cone calorimetry. Their thermal thermogravimetry specific...

Dual-curing composites have a wide spectrum of use in practice (rebuilding, reconstruction, and luting). The characterization this type material comparative study selected mechanical properties with light-cured materials were carried out for paper. In study, we used six dual-cure system—Bulk EZ, Fill-Up!, StarFill 2B, Rebilda DC, MultiCore Flow, Activa Bioactive-Restorative—and three materials—Filtek Bulk Fill Posterior, Charisma Classic, G-aenial Universal Flo. conditioned 24 h water at 37...

Ground tire rubber (GTR) is used to decrease the cost of vulcanizates. However, insufficient interactions between GTR particles and matrices make mechanical properties vulcanizates containing deteriorate. This paper compares original methods modification. The effects surface activation by sulfuric acid (A), its modification (3-mercaptopropyl)trimethoxy silane (M), or hybrid treatment—combining both approaches (H), were analyzed in terms energy, specific area morphology particles....

In modern polymer industry, there still is a room for new generations of fillers capable enhancing the performance composite materials. Currently, much effort being put into process improving mechanical properties elastomer this work, multiwalled carbon nanotubes (MWCNTs) and graphene nanoplatelets (GnPs) were modified with silane, titanate, or zirconate using plasma treatment, in order to apply them as styrene/butadiene rubber. Following its modification, filler surface was analyzed:...

Novel sulfur-silsesquioxane random copolymer (poly(S-r-POSS)) was synthesized via the radical reaction between liquid sulfur and octavinyl silsesquioxane. Particulate solid POSS dispersed in molten heated order to initiate free (inverse vulcanization). The appearance of new C–S bonds along with disappearance C=C from vinyl groups confirmed by Raman FTIR spectroscopy. Moreover, formation saturated single C–C reacting revealed FTIR. Microhomogenity analyzed means SEM-EDS mapping its thermal...

ABSTRACT The sulfide polymers of variable and controlled sulfur content, obtained by anionic copolymerization elemental thiiranes (styrene cyclohexene sulfide), were applied as curatives (sulfur donors) in the vulcanization process styrene–butadiene rubber. activity polysulfides was investigated based on rheometric measurements calculations curing parameters using kinetic data. crosslink density structure related to mechanical properties vulcanizates under static dynamic conditions studied....

One of the most serious drawbacks polymeric materials is their flammability. This poses problems for use as building materials. The production elastomeric composites capable ceramization one way making such flame-retardant and thus improving fire safety. Here, we propose ceramizable, highly filled based on NBR rubber containing talc fluxing agent in composition. research showed low flammability (88 % reduction FIGRA), good rheological properties, high mechanical strength vulcanizates...

This paper describes a method of laser ablation for improving the hydrophobic properties vulcanized rubber. The treatment was tested on acrylonitrile rubber (NBR) and styrene butadiene (SBR) containing carbon nanotubes soot as fillers. surface layer vulcanizates modified using nanosecond-pulsed at 1060 nm wavelength. parameters process were congruent, so no chemical changes in polymeric material observed. Evaluation condition laser-textured samples performed Leica MZ6 stereoscopic...

The aim of this research was to compare the biomechanical properties experimental composites containing a classic photoinitiating system (camphorquinone and 2-(dimethylami-no)ethyl methacrylate) or diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO) as photoinitiator. produced light-cured consisted an organic matrix-Bis-GMA (60 wt.%), TEGDMA (40 wt.%) silanized silica filler (45 wt.%). Composites contained 0.27; 0.5; 0.75 1 wt.% TPO. Vickers hardness, microhardness (in nanoindentation...

The goal of this study was to compare the mechanical properties experimental resin dental composites containing a conventional photoinitiating system (camphorquinone CQ and 2-(dimethylami-no)ethyl methacrylate (DMAEMA)) photoinitiator 1-phenyl-1,2 propanedione (PPD) with methacrylate) or acting alone phenylbis(2,4,6-trimethylbenzoyl)-phosphine oxide (BAPO). manually produced consisted an organic matrix: bis-GMA (60 wt. %), TEGDMA (40 silanized silica filler (45 %). contained 0.4/0.8 %,...

The interest in and application of metal organic frameworks (MOF) is increasing every year. These substances are widely used many places, including the separation storage gases energy, catalysis, electrochemistry, optoelectronics, medicine. Their use polymer technology also increasing, focusing mainly on synthesis MOF-polymer hybrid compounds. Due to presence ions their structure, they can serve as a component crosslinking system for curing elastomers. This article presents possibility using...

This paper examines the influence of morphology zinc oxide nanoparticles (n-ZnO) on activation energy, vulcanization parameters, crosslink density, structure, and mechanical properties in extension sulfur vulcanizates styrene-butadiene rubber (SBR). Scanning electron microscopy was used to determine particle size distribution morphology, whereas specific surface area (SSA) squalene wettability n-ZnO were adequately evaluated using Brunauer–Emmet–Teller (BET) equation tensiometry. The then...

In modern rubber industry, there still is a room for new fillers, which can improve the mechanical properties of composites, or introduce function to material. Modern fillers like carbon nanotubes graphene nanoplatelets (GnP), are increasingly applied in advanced polymer composites technology. However, it might be hard obtain well dispersed system such systems. The matrix often exhibits higher surface free energy (SFE) level with filler, cause problems polymer-filler interphase adhesion....

Fly ash (FA) fractions with a particle size of 63 µm < FA 250 obtained by sieve fractionation were used as partial carbon black (CB) replacement in rubber mixture based on styrene-butadiene (SBR). In order to improve the interactions at interface between and fractionated ash, stage preparing mixtures, two different vinyl silanes added system: Vinyltrimethoxysilane (U-611) or Vinyl-tris (2-methoxy-ethoxy) silane (LUVOMAXX VTMOEO DL50), epoxy groups: 3-(glycidoxypropyl)trimethoxysilane (U-50)...

Gloves are one of the most important elements personal protective equipment (PPE). To improve gloves properties, a lot different methods surface modifications used. In this work, application geometric, chemical, and plasma to hydrophobicity butyl (IIR) silicone (MVQ) rubber described. characterise properties contact angle measurements, FT-IR spectroscopy scanning electron microscopy were This study showed that when chemical modification applied, value increases compared non-modified samples....

The sulfide polymers of variable and controlled sulfur content, obtained by anionic copolymerization elemental thiiranes (styrene cyclohexene sulfide), were applied as curatives (sulfur donors) in the vulcanization process styrene-butadiene rubber (SBR). activity polysulfides was investigated on basis rheometric measurements calculations curing parameters using kinetic data. crosslink density structure related to mechanical properties vulcanizates under static dynamic conditions studied....

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Abstract In this study, various plasma treatment protocols were employed to modify white rice husk ash (WRHA) for enhanced compatibility as a reinforcing filler in natural rubber (NR) formulations. The treatments included argon (cleaning), oxygen (activation), and acetylene (polymerization) plasma, aiming increase WRHA's specific surface area. sense, five compounds based on standard NR/silica tire tread formulation developed assessed vulcanization kinetics mechanical, dynamical, tribological...

The effect of ionic liquid additives,1-butyl-3-metyloimidazolium bromide and chloride, on the properties rubber-textile composites was examined. were obtained from polyamide fabric covered with a thin layer vulcanizate (butyl rubber or acrylonitrile-butadiene rubber) filled talc mica. addition fillers modified liquids significantly reduced flammability investigated materials, without deterioration their mechanical adhesion between fabric, even after thermal aging process.