Desenvolvimento de composto de borracha EPDM utilizando cargas alternativas obtidas da regeneração de borrachas vulcanizadas para fabricação de mangueiras de arrefecimento

• Ano de defesa: 2015
• Autor(a) principal: Pereira, Cicera Soares
• Orientador(a): Miranda, Leila Figueiredo de
• Banca de defesa: Pereira, Nilson Casimiro , Terence, Mauro César , Silva, Leonardo Gondim de Andrade e
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Presbiteriana Mackenzie
• Programa de Pós-Graduação: Engenharia de Materiais
• Departamento: Engenharia de Materiais
• País: BR
• Palavras-chave em Português: borracha vulcanizada; reprocessamento; EPDM; NBR-PVC; reaproveitamento
• Palavras-chave em Inglês: acceleration rubber; reprocessing; EPDM; NBR-PVC; regeneration
• Área do conhecimento CNPq: CNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA
• Link de acesso: http://dspace.mackenzie.br/handle/10899/24185

The automotive industry uses infinity of different products and articles based on vulcanized rubber and, during the manufacturing, part of them are discarded due to the processing failures, causing damage to the environment. If these failures occur after the vulcanization of the rubber, there is no possibility of reprocessing the material. Due to the high cost of the raw materials, reusing the material from vulcanized pieces discarded can generate a reduction in the raw materials, as well as in the final cost of the formulation. Among the rubbers used to obtain these devices, the ethylene-propylene- diene monomer (EPDM) and nitrile rubber containing poly (vinyl chloride) (NBR-PVC) are included. This study aims to obtain and characterize EPDM rubber compound, vulcanized with sulfur containing different concentrations of waste ground vulcanized rubber (EPDM or mixed EPDM/NBR-PVC), observing possible changes in mechanical properties and in relation to chemical compounds without the addition of waste. Compounds were obtained containing 0wt%, 5wt% and 10wt%of ground vulcanized rubber waste. By checking the results, it was verified that the compounds containing different types of waste (EPDM or mixed EPDM/NBR-PVC), at concentrations 5wt% to 10wt% of waste, are more resistant to heat, oil immersion and coolant liquid (ethylene glycol), compared to the compound obtained without addition of waste rubber. The compounds without residue showed better surface finish compared to compounds containing waste. Comparing the surface finish of compounds containing the residue, it was observed that the surface finish obtained from the pressed samples was better than the finish obtained for the extruded samples.