2011
DOI: 10.1002/vnl.20257
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Devulcanization of waste tires using a twin‐screw extruder: The effects of processing conditions

Abstract: During recent decades, for both economic and environmental reasons, recycling of waste tires that are based on SBR/NR has been widely considered. In this study the devulcanization process of the tread section of waste tires was carried out by using a twin‐screw extruder. The effects of barrel temperature and screw speed were investigated. Percent of devulcanization, sol fraction, and curing behavior of devulcanized samples were studied. After the addition of curing agents into the devulcanizates, the general b… Show more

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Cited by 54 publications
(34 citation statements)
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“…Therefore, development of research projects focused on new methods of reclamation of GTR [20][21][22] requires better understanding of the impact of vulcanizing systems on the properties of the obtained products.…”
Section: Introductionmentioning
confidence: 99%
“…Therefore, development of research projects focused on new methods of reclamation of GTR [20][21][22] requires better understanding of the impact of vulcanizing systems on the properties of the obtained products.…”
Section: Introductionmentioning
confidence: 99%
“…Devulcanization is a way of providing energy to destroy, total or partially, the three-dimensional network formed during vulcanization 4 . The known methods that use different ways to promote the devulcanization of rubber include thermomechanical, thermo-chemical and mechano-chemical [5][6][7][8][9] , physical (by microwaves 3,[10][11][12][13][14][15][16][17][18][19][20] and ultrasound [21][22][23][24][25][26][27][28][29] ) and biochemical [30][31][32][33] . All of them involve complex transformations that lead to depolymerization, oxidation, and in many cases, the degradation of polymeric chains of rubber, with the consequent reduction on its viscosity 34 .…”
Section: Introductionmentioning
confidence: 99%
“…At present, reducing the size in the form of grinding is among the most common of the applied scrap rubber recycling technologies; it consists of mechanical disintegration of the scrap rubber material until the required particle size has been reached. The disintegrated scrap rubber containing high‐quality material can be used, among other things, as filler in thermoplastic compositions , thermoplastic elastomers , and rubber compounds , as well as as an asphalt modifier , a cement modifier , an absorbent , and a substrate used in the processes of pyrolysis and devulcanization . In general, the increased content of ground tire rubber (GTR) in polymer composition results in lower mechanical properties of the obtained products.…”
Section: Introductionmentioning
confidence: 99%