Devulcanization
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Devulcanization of Natural Rubber in Composites with Distinct Crosslink Densities by Twin-Screw Extruder
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 parameters were fixed, as well as the initial material granulometry and auxiliary thermoplastic added to
Mat. Res.. Publicado em: 02/05/2017
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2. The Role of Carbon Black on Devulcanization of Natural Rubber by Microwaves
One of the greatest problems of the modern society is the recycling of vulcanized elastomers, like tires and industrial rejects. This work studies one of the techniques of devulcanization of natural rubber (NR), the devulcanization by microwaves, as well as the influence of the amount of carbon black on this process through devulcanization of the NR with con
Mat. Res.. Publicado em: 25/08/2015
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3. Blends of ground tire rubber devulcanized by microwaves/HDPE - Part A: influence of devulcanization process
Abstract The main objective of this work is the study of the influence of microwaves devulcanization of the elastomeric phase on dynamically revulcanized blends based on Ground Tire Rubber (GTR)/High Density Polyethylene (HDPE). The devulcanization of the GTR was performed in a system comprised of a conventional microwave oven adapted with a
Polímeros. Publicado em: 2015-06
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4. PROCESSAMENTO E CARACTERIZAÇÃO DE MISTURAS DE PEBD VIRGEM E RECICLADO COM BORRACHA DE PNEU DESVULCANIZADA POR MICROONDAS IN SITU.
Encontrar novos meios e técnicas de reciclagem têm sido um dos grandes caminhos buscados por pesquisadores para resolver o problema do lixo. Para este estudo foram escolhidos dois dos polímeros com grandes volumes de material pós-consumo: PEBD e borracha de pneu. Várias pesquisas têm sido feitas no sentido de incorporar borracha de pneu em polímeros s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/09/2009
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5. Study of morphology influence on the electric properties of the pani and devulcanizated EDPM blend. / Estudo da influência da morfologia sobre as propriedades elétricas da blenda de PAni com EPDM desvulcanizado por microondas, proveniente do descarte da indústria de autopeças.
Polyaniline doped with dodecylbenzenesulfonic acid (PAni-DBSA) and ethylene-propylene-diene-monomer (EPDM) rubber devulcanizated by microwave (dEPDM) blends have been prepared by mechanical process. Flexible, free-standing and stretchable films have been obtained, which have been characterized by electrical conductivity measurements, FTIR, XRD, DSC, TGA, DMT
Publicado em: 2008
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6. Devulcanization of styrenebutadiene (SBR) waste tire by controlled oxidation
Neste trabalho é descrita a desvulcanização da borracha SBR (Styrene Butadiene Rubber) via oxidação controlada com ácido nítrico. Análises por IV, RMN de ¹H e 13C, CHN, TG, GPC e experimentos de DTP-EM (Decomposição a Temperatura Programada -Espectrometria de Massas) sugerem que o ácido nítrico promove dois processos: (i) a desvulcanização por
Journal of the Brazilian Chemical Society. Publicado em: 2006-06