Results 21 to 30 of about 310 (172)
eXPRESS Polymer Letters, 2015 In this study, styrene butadiene rubber (SBR) was devulcanized using microwave irradiation. In particular, effect of ionic liquid (IL), pyrrolidinium hydrogen sulfate [Pyrr][HSO4], on the devulcanization performance was studied.
S. Seghar +6 more
doaj +1 more source
Modeling on the kinetics of an EPDM devulcanization in an internal batch mixer using an amine as the devulcanizing agent [PDF]
Chemical Engineering Science, 2006 The use of amines and the application of mechanical force (shear) in rubber devulcanization have been reported in the literatures. In this paper, the devulcanization of ethylene propylene diene rubber (EPDM) is conducted in a Brabender batch mixer using hexadecylarnine (HDA) as the devulcanizing agent. Considering the complexity of the compound and the
Sutanto, P. +4 more
openaire +2 more sources
Modelling a continuous devulcanization in an extruder [PDF]
Chemical Engineering Science, 2006 An engineering kinetic model is applied to EPDM devulcanization in an extrusion process. Parameters that were included in the model are crosslink density, devulcanizing agent concentration, time, shear rate, and temperature. The extruder is considered as a series of plug flow and stirred tank reactors.
Sutanto, P. +2 more
openaire +2 more sources
Devulcanization of Natural Rubber in Composites with Distinct Crosslink Densities by Twin-Screw Extruder [PDF]
Materials Research, 2017 In this study, the effects of the devulcanization process realized by an intermeshing co-rotating twin-screw extruder (ICTSE) on three vulcanized Natural Rubber (NR) composites with different crosslink densities (CD) have been investigated. The extrusion
Rafael Barbosa +2 more
doaj +1 more source
Laboratory testing and field application of devulcanized rubber/SBS composite modified asphalt
Case Studies in Construction Materials, 2023 Styrene-butadiene-styrene copolymer (SBS) and recycled tire rubber are the typical polymers for asphalt modification. The dispersion of crumb tire rubber (CTR) dominates the composite effect of rubberized asphalt.
Lu Zhang +3 more
doaj +1 more source
Recycling, 2020 Environmental concerns about waste management systems have stimulated the search for technological and economical alternatives that introduce waste as raw material for production cycles. In this sense, this study aimed to develop and characterize styrene-
Aline Zanchet +1 more
doaj +1 more source
Progress in devulcanization of waste tire rubber: Upcycling towards a circular economy
eXPRESS Polymer LettersAs a complex composite material, tire rubber has always presented significant environmental and waste management concerns due to its non-biodegradability and accumulation in landfills.
Zaheer ul Haq +9 more
doaj +1 more source
Recycling of fluoro-carbon-elastomers – A review
Advanced Industrial and Engineering Polymer Research, 2022 This review provides an overview of recycling methods for fluoro-elastomers (FKM) being a very expensive material with excellent properties. However, these properties are based on strong chemical bonds which have to be overcome, but overcome with care to
Jens Schuster +3 more
doaj +1 more source
eXPRESS Polymer Letters, 2015 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
P. S. Garcia +4 more
doaj +1 more source
Polímeros, 2006 Borracha de pneu pós-consumo previamente particulada foi submetida a um tratamento em microondas, de forma a promover a quebra de suas ligações cruzadas, ou seja, sua desvulcanização.
Carlos H. Scuracchio +2 more
doaj +1 more source