The influence of screw configuration and screw speed of co-rotating twin screw extruder on the properties of products obtained by thermomechanical reclaiming of ground tire rubber

Formela, Krzysztof; Cysewska, M.; Haponiuk, Józef T.

doi:10.14314/polimery.2014.170

Cited by 35 publications

(26 citation statements)

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“…Those rubbers are main compounds used in car tires manufacturing [27]. It was observed that increasing temperature during reclaiming cause increase of temperatures of 2, 5 and 10% weight loss, which is due to evaporation or decomposition of plasticizers, accelerators and other low molecular additives present in ground tire rubber [28]. This phenomenon affects on slightly improvement of thermal stability of reclaimed rubbers (rGTR80, rGTR120 and rGTR160) and on increasing value of char residue after measurement.…”

Section: Evaluation Of Ground Tire Rubber Reclaiming At Different Temmentioning

confidence: 99%

Investigation of volatile low molecular weight compounds formed during continuous reclaiming of ground tire rubber

Gągol

Boczkaj

Haponiuk

et al. 2015

Polymer Degradation and Stability

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Section: Evaluation Of Ground Tire Rubber Reclaiming At Different Temmentioning

confidence: 99%

Investigation of volatile low molecular weight compounds formed during continuous reclaiming of ground tire rubber

Gągol

Boczkaj

Haponiuk

et al. 2015

Polymer Degradation and Stability

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“…Horikx's theory has been used widely in the devulcanization literature as a method for indicating the selectivity for crosslink scission during a devulcanization process. Horikx's theory describes the relationship between the sol fraction and the relative decrease in crosslink density of a crosslinked polymer network in two limiting cases of network breakdown: random scission of CC bonds in the polymer chains and scission of the crosslinks.…”

Section: Introductionmentioning

confidence: 99%

Quantifying and comparing the selectivity for crosslink scission in mechanical and mechanochemical devulcanization processes

Edwards

Danon

Gryp

et al. 2016

J of Applied Polymer Sci

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Devulcanization processes have potential to increase the economic value of ground tire rubber (GTR) derived from waste tires, although the chemistry of the devulcanization process is still poorly understood. This article presents a method, based on sol extraction and swelling measurements, for quantifying the selectivity for crosslink scission over main chain scission, and applies it to extrusion-based mechanical and mechanochemical devulcanization processes at various operating conditions. The mechanochemical devulcanization process, using diphenyl disulfide and process oil, resulted in a higher selectivity for crosslink scission than the mechanical devulcanization process. Furthermore, it was shown that the process oil, along with lower reaction temperature, in the mechanochemical devulcanization process was responsible for the increased selectivity, rather than the presence of diphenyl disulfide.

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“…The results were also compared to the thermal characteristics of the virgin natural rubber. Formela et al (2014) [84] investigated the thermomechanical reclaiming process of waste tire rubber and concluded that the reclaiming process in uenced the thermal characteristics and the relation was con rmed by Horikx theory. Meanwhile, upheld the stability of the reclaimed waste tire through DSC examination.…”

Section: Durability Considerationmentioning

confidence: 98%

“…The investigation on the durability of waste rubber, especially ground tire rubber, can be explored in some previous reports. The thermal analyses of the reclaimed tire rubber waste without mixing with virgin rubber have been investigated by some researchers [83][84][85]. In the investigation, the method for compounding crumb rubber utilizes screw mixer in the temperature of 180 C with additional vulcanization agents such as zinc, sulfur, and stearic acid.…”

Section: Durability Considerationmentioning

confidence: 99%

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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The influence of screw configuration and screw speed of co-rotating twin screw extruder on the properties of products obtained by thermomechanical reclaiming of ground tire rubber

Cited by 35 publications

References 0 publications

Investigation of volatile low molecular weight compounds formed during continuous reclaiming of ground tire rubber

Investigation of volatile low molecular weight compounds formed during continuous reclaiming of ground tire rubber

Quantifying and comparing the selectivity for crosslink scission in mechanical and mechanochemical devulcanization processes

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

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