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Master's Dissertation
DOI
Document
Author
Full name
Moisés Amorim Canazza
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2019
Supervisor
Committee
Wiebeck, Hélio (President)
Esper, Fábio José
Martin, Sandra Regina Scagliusi
Title in Portuguese
Reciclagem de elastômeros via micro-ondas.
Keywords in Portuguese
Borracha
Borracha de butadieno-estireno
Borracha natural
Elastômeros (Reciclagem)
Micro-ondas
Pó de pneu
Abstract in Portuguese
A reciclagem de materiais poliméricos tem sido objeto de estudos a fim de poupar recursos naturais, principalmente de fontes não renováveis, com objetivo de minimizar os impactos causados ao meio ambiente. Nesse cenário, aparecem os materiais elastoméricos, como a borracha, principalmente na utilizada da fabricação de pneus, uma vez que a indústria pneumática consome aproximadamente 60% da produção de borracha. Como a destinação final de forma ambientalmente correta do pneu é uma exigência devidamente amparada por normas e leis nacionais e internacionais, o objetivo desse trabalho é desenvolver um estudo sobre a eficácia das irradiações das micro-ondas no processo de desvulcanização do pó de pneu. Para esse estudo as amostras de pó de pneu foram submetidas a irradiações de micro-ondas, e posteriormente incorporadas às matrizes poliméricas de NR (borracha natural) e SBR (borracha de butadieno-estireno), e caracterizadas para verificação de suas propriedades. Para caracterização das amostras foram utilizados os seguintes ensaios: Espectroscopia no Infravermelho (FTIR), Dureza, Resistência à Tração e Alongamento, Reometria, Índice de Inchamento, Análise Termogravimétrica (TGA) e Microscopia Eletrônica de Varredura (MEV). Verificou-se viabilidade técnica da incorporação do pó de pneu nas matrizes de NR e SBR, uma vez que alguns resultados mostraram que a adição do pó de pneu irradiado via micro-ondas não ocasionou perdas significativas nas propriedades mecânicas e térmicas dos compostos.
Title in English
Recycling of elastomers via microwaves.
Keywords in English
Microwaves
Natural rubber
Styrene-butadiene rubber
Tire powder
Abstract in English
The recycling of polymeric materials has been studied in order to save natural resources, mainly from non-renewable sources, in order to minimize the impacts caused to the environment. In this scenario, there are elastomeric materials, such as rubber, mainly used in tire manufacturing, since the pneumatic industry consumes approximately 60% of rubber production. As the final destination of an environmentally correct tire is a requirement, duly supported by national and international laws and regulations, the objective of this work is to develop a study on the efficiency of microwave irradiation in the process of tire powder devulcanization. For this study the tire powder samples were subjected to microwave irradiation, and later incorporated into the polymer matrices of NR (natural rubber) and SBR (butadiene-styrene rubber), and characterized for verification of their properties. For characterization of the samples the following tests were used: Infrared Spectroscopy (FTIR), Hardness, Tensile Strength and Stretching, Rheometry, Swell Index, Thermogravimetric Analysis (TGA) and Scanning Electron Microscopy (MEV). It was verified the technical feasibility of the incorporation of the tire powder in the NR and SBR matrices, since some results showed that the addition of the tire powder irradiated by microwave did not cause significant losses in the mechanical and thermal properties of the compounds.
 
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Publishing Date
2019-08-23
 
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