Use of styrene butadiene rubber industrial waste devulcanized by microwave in rubber composites for automotive application

Zanchet, Aline; Carli, Larissa N.; Giovanela, Marcelo; Brandalise, Rosmary Nichele; Crespo, Janaína da Silva

doi:10.1016/j.matdes.2012.03.014

Cited by 109 publications

(88 citation statements)

References 40 publications

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“…Karger-Kocsis et al [12] reported that this treatment can act on the compatibility of devulcanized molecular structures. Zanchet et al [24] noted that the microwave treatment enhanced the interfacial adhesion between devulcanized SBR and virgin SBR matrix. So, in this work, molecular entanglements could have occurred between the devulcanized molecules of the NR and synthetic rubber, and it would result in the shift of this T max to lower values.…”

Section: Thermal Propertiesmentioning

confidence: 99%

“…Some studies have reported the use of microwave devulcanization in different types of elastomers. Zanchet et al [24] noted that the microwave devulcanization enhanced the interfacial adhesion between devulcanized styrene-butadiene rubber (SBR) in a virgin SBR matrix. The results showed that this mixture can be used in automotive profiles obtained by compression molding.…”

Section: Introductionmentioning

confidence: 99%

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Devulcanization of ground tire rubber: Physical and chemical changes after different microwave exposure times

Garcia¹,

Sousa²,

Lima³

et al. 2015

Express Polym. Lett.

156

123

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Abstract.Microwave devulcanization is known to be a promising and an efficient rubber recycling method which makes possible for the rubber to regain its fluidity, and makes it capable of being remolded and revulcanized. The focus of this work is to understand the physical and chemical changes that occur in the ground tire rubber after different microwave exposure periods. For this purpose chemical, thermal, rheological and morphological analyses were performed on the tire rubber, which contains natural rubber (NR) and styrene-butadiene rubber (SBR) as polymeric material. The results showed that the microwave treatment promoted the breaking of sulfur cross-links and consequently increased the rubber fluidity. However, long periods of exposure led to degradation and modification of some properties. At nanoscale, the deformation of the devulcanized NR domain under stress was observed, and the morphology obtained appears to be a droplet dispersion morphology. The most exposed samples presented only one glass transition temperature, and from this it was concluded that the treatment may have played an important role in the compatibilization of the elastomeric blend. Based on the results, it is required to control the microwave exposure time and polymeric degradation in order to achieve a regenerated rubber with satisfactory properties.

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Section: Thermal Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Devulcanization of ground tire rubber: Physical and chemical changes after different microwave exposure times

Garcia¹,

Sousa²,

Lima³

et al. 2015

Express Polym. Lett.

156

123

View full text Add to dashboard Cite

show abstract

“…devulcanization/polymerization) of the GTR particles [3]. Nowadays, the preferred method for that is microwave devulcanization [4][5][6][7]. Another product that can be made from used tires is pyrolytic carbon black (pCB), which has been attracting more and more interest lately.…”

Section: Introductionmentioning

confidence: 99%

Structure and properties of styrene-butadiene rubber (SBR) with pyrolytic and industrial carbon black

2017

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To evaluate the performance of pyrolytic carbon black (pCB), we filled styrene-butadiene rubber (SBR) with pCB and N330 industrial carbon black (CB). We used two ratios of pCB and N330: 1/9 and 1/1. N330 was selected because its specific surface area was close to that of pCB. The overall CB content in the mixes was 0, 30, 45 and 60 part per hundred rubber (phr). We studied the effects of types and amounts of CB on the dispersion, cure behavior, dynamic mechanical thermal behavior, tensile mechanical and fracture mechanical properties of the filled rubbers. Dispersion of pCB was poorer than that of N330 CB. With respect to tensile mechanical properties -except tear strength -N330 outperformed pCB. The tear strength and fracture mechanics characteristics (J-integral at crack tip opening, and trouser tear strength) of SBR were higher with pCB than with N330. This can be attributed to the broader dispersion of pCB than N330. The combined use of N330 and pCB resulted in intermediate values reflecting the actual N330/pCB ratio for all measured parameters. We wanted to correlate the mechanical performance with the apparent molecular weight between crosslinks (Mc), and found reasonable correlations for the Payne effect, tensile strength and critical J-integral. On the other hand, we only found a tendency for tear characteristics; this was ascribed to additional effects of (p)CB dispersion.2

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“…Meanwhile, the NR bands are represented by the presence of peak transmittance at 1370 cm 1 and 833 cm 1 . All bands assignment can be referred and matched to the previous literature [72][73][74]. All peaks found in the ATR-FTIR test re ect that either stretching or bending vibrations of each compound belong to rubber hydrocarbon components.…”

Section: Physicochemical Propertiesmentioning

confidence: 80%

Physicochemical Properties and Stress-Strain Compression Behaviors of a Waste based Magnetorheological Elastomers

Ubaidillah

Mazlan²,

Sutrisno

et al. 2016

Scientia Iranica

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Abstract. This study reports a reclamation method of Ground Tire Rubber (GTR) and electronic wastes into a tunable sti ness composite, namely magnetorheological elastomers (MREs). The composite matrix was the GTR that had been separated from its metals and yarns. Meanwhile, the llers were fabricated from magnetic cores of the Cathode Ray Tubes (CRTs) monitor waste through high energy ball milling in wet condition. Some physicochemical characterizations of the powders were initially conducted to collect the physical and chemical properties. Based on the examination, the ground powders were identi ed as pure magnetite (Fe 3 O 4 ) having low remnant and high magnetization. The MREs samples were prepared by high-temperature high-pressure sintering. The mixed of crumb rubber and magnetite powder was vulcanized under simultaneous pressure and temperature in the absence of magnetic elds, which resulted in an isotropic MREs type. The abilities of specimens were examined in relation to the external magnetic eld through static and dynamic compression tests. The experimental investigation showed that the static and dynamic stresses of the sti ness increased by the increment of magnetic elds up to a particular point of ux density. The tunability of the sti ness indicated that the elastomers could provide wide ranges of storage and loss modulus.

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Use of styrene butadiene rubber industrial waste devulcanized by microwave in rubber composites for automotive application

Cited by 109 publications

References 40 publications

Devulcanization of ground tire rubber: Physical and chemical changes after different microwave exposure times

Devulcanization of ground tire rubber: Physical and chemical changes after different microwave exposure times

Structure and properties of styrene-butadiene rubber (SBR) with pyrolytic and industrial carbon black

Physicochemical Properties and Stress-Strain Compression Behaviors of a Waste based Magnetorheological Elastomers

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