Estudo comparativo entre os aceleradores TMTD, TBzTD e ZBEC na vulcaniza??o do elast?mero isobutileno-isopreno
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| Data de Publicação: | 2019 |
| Tipo de documento: | Dissertação |
| Idioma: | por |
| Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFRRJ |
| Texto Completo: | https://tede.ufrrj.br/jspui/handle/jspui/5172 |
Resumo: | Nitrosamines are considered carcinogenic by a large number of international organizations and regulatory authorities. During the vulcanization process, the formation of nitrosamines occurs, mainly N-nitroso-dimethylamine, N-nitroso-diethylamine, N-nitroso-morpholine. Accelerators are the main cause of the emergence of nitrosamines, such as tetramethyl-thiuram disulphide (TMTD), which contains in its molecular structure secondary amine groups. Some accelerators exhibit kinetic behavior similar to TMTD such as tetrabenzylthiuram disulphide (TBzTD) and zinc dibenzyl dithiocarbamate (ZBEC) and, according to the literature, do not release noxious nitrosamines into the environment. The objective of the present work was the comparison of compounds presenting the isobutylene-isoprene (IIR) elastomer by means of a standard formulation used for confection of air chambers, and the production of compounds using the TBzTD and ZBEC accelerators and the standard compound using TMTD. For this, an experimental design was proposed for the production of these compounds in a laboratory banbury. Through the rheological characterization, it was noticed that the TBzTD and ZBEC accelerators do not present the same kinetic behavior, especially when the maximum torque (MH) values were analyzed during vulcanization in the IIR elastomer. The MH experimental data obtained were correlated through the least square method (RNL-MMQ) and the interpolation technique (TPSIM), allowing the evaluation of the effect of TBzTD and ZBEC accelerators on the compounds produced. In addition, through the physical-mechanical and thermo-dynamic measurements, a decrease in mechanical properties was observed for the TBzTD and ZBEC accelerator compounds compared to the standard compound. Such observation is linked to the difference in formation of crosslinks during the vulcanization step between the accelerators studied. The results of FTIR and swelling indexes corroborated to the observed trend that the TMTD accelerator, unlike the TBzTD and ZBEC accelerators, promotes a greater formation of crosslinks than the accelerators compared |
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Mendon?a, Roberta Helena091.875.927-70http://lattes.cnpq.br/3724636742992170Thir?, Rossana Mara da Silva Moreira018.545.877-73http://lattes.cnpq.br/5313449816997467Mendon?a, Roberta Helenahttp://lattes.cnpq.br/3724636742992170Thir?, Rossana Mara da Silva Moreirahttp://lattes.cnpq.br/5313449816997467Bastos, Daniele Cruzhttp://lattes.cnpq.br/6597101803506089Machado J?nior, H?lio Fernandeshttp://lattes.cnpq.br/3462534255321209136.511.877-05http://lattes.cnpq.br/5425604255656427Gobbi, Vinicius Guedes2021-10-26T14:35:03Z2019-07-01GOBBI, Vinicius Guedes. Estudo comparativo entre os aceleradores TMTD, TBzTD e ZBEC na vulcaniza??o do elast?mero isobutileno-isopreno.2019. 95f.. Disserta??o (Mestrado em Engenharia Qu?mica ) - Instituto de Tecnologia, Universidade Federal Rural do Rio de Janeiro, Serop?dica, RJ, 2019.https://tede.ufrrj.br/jspui/handle/jspui/5172Nitrosamines are considered carcinogenic by a large number of international organizations and regulatory authorities. During the vulcanization process, the formation of nitrosamines occurs, mainly N-nitroso-dimethylamine, N-nitroso-diethylamine, N-nitroso-morpholine. Accelerators are the main cause of the emergence of nitrosamines, such as tetramethyl-thiuram disulphide (TMTD), which contains in its molecular structure secondary amine groups. Some accelerators exhibit kinetic behavior similar to TMTD such as tetrabenzylthiuram disulphide (TBzTD) and zinc dibenzyl dithiocarbamate (ZBEC) and, according to the literature, do not release noxious nitrosamines into the environment. The objective of the present work was the comparison of compounds presenting the isobutylene-isoprene (IIR) elastomer by means of a standard formulation used for confection of air chambers, and the production of compounds using the TBzTD and ZBEC accelerators and the standard compound using TMTD. For this, an experimental design was proposed for the production of these compounds in a laboratory banbury. Through the rheological characterization, it was noticed that the TBzTD and ZBEC accelerators do not present the same kinetic behavior, especially when the maximum torque (MH) values were analyzed during vulcanization in the IIR elastomer. The MH experimental data obtained were correlated through the least square method (RNL-MMQ) and the interpolation technique (TPSIM), allowing the evaluation of the effect of TBzTD and ZBEC accelerators on the compounds produced. In addition, through the physical-mechanical and thermo-dynamic measurements, a decrease in mechanical properties was observed for the TBzTD and ZBEC accelerator compounds compared to the standard compound. Such observation is linked to the difference in formation of crosslinks during the vulcanization step between the accelerators studied. The results of FTIR and swelling indexes corroborated to the observed trend that the TMTD accelerator, unlike the TBzTD and ZBEC accelerators, promotes a greater formation of crosslinks than the accelerators comparedAs nitrosaminas s?o consideradas carcinog?nicas por um grande n?mero de organiza??es internacionais e autoridades reguladoras. Durante o processo de vulcaniza??o, ocorre a forma??o das nitrosaminas, principalmente os compostos N-nitroso-dimetilamina, a N-nitroso-dietilamina, a N-nitroso-morfolina. Os aceleradores s?o os principais causadores do surgimento das nitrosaminas, como o dissulfeto de tetrametil-tiuram (TMTD), que cont?m em sua estrutura molecular grupos de aminas secund?rias. Alguns aceleradores apresentam o comportamento cin?tico semelhante ao TMTD como o dissulfeto de tetrabenzil-tiuram (TBzTD) e o dibenzil-ditiocarbamato de zinco (ZBEC) e, de acordo com a literatura, n?o liberam nitrosaminas noc?veis ao meio ambiente. O objetivo do presente trabalho foi a compara??o de compostos apresentando o elast?mero isobutileno-isopreno (IIR), atrav?s de uma formula??o padr?o utilizada para confec??o de c?maras de ar, e a produ??o de compostos utilizando os aceleradores TBzTD e ZBEC e o composto padr?o utilizando TMTD. Para tal, foi proposto um planejamento experimental para a produ??o desses compostos em um banbury de laborat?rio. Atrav?s da caracteriza??o reol?gica notou-se que os aceleradores TBzTD e ZBEC n?o apresentam o mesmo comportamento cin?tico, principalmente quando analisado os valores de torque m?ximo (MH) durante a vulcaniza??o no elast?mero IIR. Os dados experimentais de MH obtidos foram correlacionados atrav?s do m?todo dos m?nimos quadrados (RNL-MMQ) e pela t?cnica de interpola??o (TPSIM) permitindo-se avaliar o efeito dos aceleradores TBzTD e ZBEC nos compostos produzidos. Al?m disso, atrav?s das medidas f?sico-mec?nicas e termo-din?micas, notou-se uma diminui??o nas propriedades mec?nicas para os compostos contendo acelerador TBzTD e ZBEC em compara??o ao composto padr?o. Tal observa??o est? ligado a diferen?a de forma??o de liga??es cruzadas durante a etapa de vulcaniza??o entre os aceleradores estudados. Os resultados de FTIR e ?ndice de inchamento realizados corroboraram para a tend?ndica observada de que o acelerador TMTD diferentemente dos aceleradores TBzTD e ZBEC promove uma maior forma??o de liga??es cruzadas que os aceleradores comparadosSubmitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2021-10-26T14:35:03Z No. of bitstreams: 1 2019 - Vin?cius Guedes Gobbi.pdf: 2629644 bytes, checksum: e16011b6f0654dc0b0a4052ee22f8252 (MD5)Made available in DSpace on 2021-10-26T14:35:03Z (GMT). No. of bitstreams: 1 2019 - Vin?cius Guedes Gobbi.pdf: 2629644 bytes, checksum: e16011b6f0654dc0b0a4052ee22f8252 (MD5) Previous issue date: 2019-07-01CAPES - Coordena??o de Aperfei?oamento de Pessoal de N?vel Superiorapplication/pdfhttps://tede.ufrrj.br/retrieve/67278/2019%20-%20Vin%c3%adcius%20Guedes%20Gobbi.pdf.jpgporUniversidade Federal Rural do Rio de JaneiroPrograma de P?s-Gradua??o em Engenharia Qu?micaUFRRJBrasilInstituto de TecnologiaABHITHA, K. et al. Studies on Non-regulated Safe Binary Accelerator System for Efficient Vulcanisation of Natural Rubber. Progress in Rubber, Plastics and Recycling Technology, v. 29, p. 99-108, 2013. ABHITHA, K. et al. Studies on non-regulated safe binary accelerator system for efficient vulcanisation of natural rubber. Progress in Rubber, Plastics and Recycling Technology, v. 29, p. 99-108, 2013. ABHITHA, K.; KURIAN, T. Safe accelerator incorporated non-cytotoxic vulcanizates based on natural rubber. Kerala: [s.n.], 2017. 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OENSLAGER, G. Organic accelerators. Industrial and engineering chemistry, v. 23, 1933. OHM, R. F. Rubber Chemicals. [S.l.]: John Wiley & Sons, Inc, 2000. OHNUKI, T. The vulcanizing system of diene rubber. International Polymer Science and Technology, v. 42, p. 39-46, 2015. OLIVEIRA, I. D. Reciclagem de pneus atrav?s da convers?o em baixa temperatura. Lorena: [s.n.], 2003. OLIVEIRA, I. T. D. D.; PACHECO, ?. B. A. V.; VISCONTE, L. L. Y. Efeito de um novo acelerador de vulcaniza??o nas propriedades reom?tricas de composi??es de borracha nitr?lica com difrentes teores de AN. Pol?meros, v. 20, p. 366-370, 2010. OLIVEIRA, L. M. D. Caracteriza??o do comp?sito de borracha natural refor?ado com nanocristais de celulose. S?o Paulo: [s.n.], 2017. 92 OLIVEIRA, M. A. D. S. et al. Influ?ncia do teor de negro de fumo nas propriedades din?mico-mec?nicas de borracha natural. Congresso Brasileiro de Engenharias e Ci?ncias dos Materiais, Novembro 2014. 6943-6950. OLIVEIRA, M. A. D. S. et al. Influ?ncia do m?todo de vulcaniza??o nas propriedades mec?nicas e na densidade de liga??es cruzadas da borracha natural. Revista Pol?meros: Ci?ncia e Tecnologia, p. 1-6, 2015. OLIVEIRA, M. A. D. S. et al. Influ?ncia do m?todo de vulcaniza??o nas propriedades mec?nicas e na densidade de liga??es cruzadas da borracha natural. Pol?meros, v. 26, p. 43-48, 2016. OLIVEIRA, M. G.; SOARES, B. G. Influ?ncia do Sistema de Vulcaniza??o nas Propriedades da Mistura NBR/EPDM. Pol?meros: Ci?ncia e Tecnologia, v. 12, p. 11-19, 2002. OLIVEIRA, M. G.; SOARES, B. G. Influ?ncia do sistema de vulcaniza??o nas propriedades da mistura NBR/EPDM. Pol?meros: Ci?ncia e Tecnologia, v. 12, p. 11-19, 2002. OLIVEIRA, V. M?todos de processamento de Bandas de Rodagem de Baixa Resist?ncia ao Rolamento. [S.l.]: [s.n.], 2010. ONTSUKA, H.; TOH, M. Mill behaviour of rubber on two roll mill with temperature. International Polymer Science and Technology, v. 42, p. 1-6, 2015. ?TER, M.; KARAAGAC, B.; DENIZ, V. Substitution of Aromatic Processing Oils in Rubber Compounds. KGk Rubberpoint, v. 64, p. 48-51, 2011. OURY, B. Assessment of exposure to carcinogenic N-nitrosamines in the rubber industry. International Archives of Occupational and Environmental Health, v. 70, p. 261-271, 1997. PALAORO, D. Desenvolvimento de uma metodologia experimental para a obten??o e caracteriza??o de formula??es de compostos de borracha EPDM. Joinville: [s.n.], 2015. PEDRINHA, I. Tecnologia da Borracha. Rio de Janeiro: IPG - Inovation Progress Group, 2018. PEKKONEN, J. Nitrosamine free rubber-compounds-replacing a hazardous thiuram accelerator with safe alternatives. Sastamala: [s.n.], 2018. PEREIRA, A. M. Estudo Ab-Initio e DFT das nitrosaminas. Jo?o Pessoa: [s.n.], 2008. 93 PIERSOL, A. G. Harris' Shock and Vibration Handbook. In: ______ Mechanical properties of rubbers. [S.l.]: he McGraw-Hill Companies, 2002. PINHEIRO, E. G. Modelos num?ricos aplicados ? vulcaniza??o de pneus. S?o Paulo: [s.n.], 2001. RAKSAKSRI, L. et al. Use of TBzTD as Noncarcinogenic Accelerator for ENR/SiO2 Nanocomposites: Cured Characteristics, Mechanical Properties, Thermal Behaviors, and Oil Resistance. International Journal of Polymer Science, p. 1-11, 2017. RAMEZANI, M.; RIPIN, Z. M. Characteristics of elastomer materials. Processes, Rubber-Pad Forming, p. 43-64, 2012. RIBAA, J.-R. et al. Composition determination of rubber blends by applying diifferential scanning calorimetry and SPA-PLS treatment. Materials Research, v. 22, p. 1-8, 2019. ROCHA, E. C.; LOVISON, V. M. H.; PIREROZAN, N. J. Tecnologia de transforma??o dos elast?meros. 2?. ed. S?o Leopoldo: [s.n.], 2002. RODRIGUES, E. B. Estudo da estabilidade das propriedades mec?nicas e qu?micas de compostos de borracha vulcanizados com enxofre ap?s envelhecimento t?rmico e oxidativo. S?o Paulo: [s.n.], 2010. RODRIGUES, M. I.; LEMMA, A. F. Planejamento de experimentos e otimiza??o de processos. 3. ed. Campinas: C?rita, 2014. ROJAS, G. J. 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Replacing TMTD with Nitrosamine Free TBzTD- Accelerator in Curing of Rubber. International Journal for Scientific Research & Development, p. 532-535, 2013. SHOKEEN, S. A review on rubber compound mixing in banbury mixer at tire industries. International Journal of Innovative Research in Technology, v. 2, p. 232-236, 2015. SILVA, G. F. et al. Swelling degree prediction of polyhydroxybutyrate/chitosan matrices loaded with ?Arnica-do-Brasil?. Journal of Applied Polymer Science, v. 136, p. 2-10, 2019. SILVA, M. V. O. D. Avalia??o da cin?tica de vulcaniza??o para borracha nitr?lica carboxilada. Rio de Janeiro: [s.n.], 2008. SKOOG, D. A. et al. Fundamentos de qu?mica anal?tica. 8?. ed. S?o Paulo: Cancage Learning, 2010. SOUZA, S. G. D. et al. Avalia??o de diferentes formula??es de compostos elastom?ricos SBR/NR visando minimizar a pr?-vulcaniza??o. Revista Mat?ria, v. 23, 2018. SOUZA, S. G. D. et al. Avalia??o de diferentes formula??es de compostos elastom?ricos SBR/NR visando minimizar a pr?-vulcaniza??o. Revista Mat?ria, v. 23, p. 1-11, 2018. TAHERI, M.; GEZAZ, S. M. Curing Characterization of EPDM Rubber Compounds using RPA: Effects of Cure Conditions. Progress Petrochem Sci, p. 1-7, 2018. TORMENTO, L. A. Qu?mica para ind?stria de borracha. 4?. ed. S?o Paulo: LT Qu?micos, 2019. TSUTSUI, C. M. Avalia??o T?cnica de Substitui??o de Plastificante Arom?tico por Naft?nico para Fabrica??o de Pneus de Caminh?o. S?o Paulo: [s.n.], 2016. 95 TSUTSUI, C. M. Avalia??o t?cnica de susbstitui??o de plastificante arom?tico por naft?nico para fabrica??o de pneus de caminh?o. S?o Paulo: [s.n.], 2016. VEIGA, V. D. Influ?ncia da combina??o s?lica/negro de fumo e das etapas de processamento no desempenho de badas de rodagem de pneu carga. Caxias do Sul: [s.n.], 2015. VIRDI, R.; GROVER, B.; GHUMAN, K. Nitrosamine safe thiuram dissulfide. Rubber chemistry and technology, v. 92, p. 90-109, 2019. WEBER, T. et al. Caracteriza??o de Artefatos Elastom?ricos obtidos por Revulcaniza??o de Res?duo Industrial de SBR. Pol?meros, v. 21, p. 429-435, 2011. WIELGOSZ, P.; KRYPIAK-GREGORCZYK, A.; BORKOWSKI, A. Regional Ionosphere Modeling Based on Multi-GNSS Data and TPS Interpolation. IEEE, p. 287-291, Outubro 2017. WOOD, P. R. Rubber mixing. [S.l.]: Rapra Technology , 2001. ZANCHET, A. et al. Sustainable Natural Rubber Compounds: Naphthenic Oil Exchange for another Alternative from Renewable Source. International Refereed Journal of Engineering and Science, v. 5, p. 10-19, 2016. ZHAO, F.; BI, W.; ZHAO, S. Influence of crosslink density on mechanical properties of natural rubber vulcanizates. 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| dc.title.por.fl_str_mv |
Estudo comparativo entre os aceleradores TMTD, TBzTD e ZBEC na vulcaniza??o do elast?mero isobutileno-isopreno |
| dc.title.alternative.eng.fl_str_mv |
Comparative study among TMTD, TBzTD and ZBEC accelerators in the vulcanization of the isobutylene-isoprene elastomer |
| title |
Estudo comparativo entre os aceleradores TMTD, TBzTD e ZBEC na vulcaniza??o do elast?mero isobutileno-isopreno |
| spellingShingle |
Estudo comparativo entre os aceleradores TMTD, TBzTD e ZBEC na vulcaniza??o do elast?mero isobutileno-isopreno Gobbi, Vinicius Guedes Isobutileno-isopreno Dissulfeto de tetrametil-tiuram Dissulfeto de tetrabenzil-tiuram Dibenzil-ditiocarbamato de zinco Isobutylene-isoprene Tetramethyl-thiuram disulfide Tetrabenzyl-thiuram disulfide zinc dibenzyl dithiocarbamate Engenharia Qu?mica |
| title_short |
Estudo comparativo entre os aceleradores TMTD, TBzTD e ZBEC na vulcaniza??o do elast?mero isobutileno-isopreno |
| title_full |
Estudo comparativo entre os aceleradores TMTD, TBzTD e ZBEC na vulcaniza??o do elast?mero isobutileno-isopreno |
| title_fullStr |
Estudo comparativo entre os aceleradores TMTD, TBzTD e ZBEC na vulcaniza??o do elast?mero isobutileno-isopreno |
| title_full_unstemmed |
Estudo comparativo entre os aceleradores TMTD, TBzTD e ZBEC na vulcaniza??o do elast?mero isobutileno-isopreno |
| title_sort |
Estudo comparativo entre os aceleradores TMTD, TBzTD e ZBEC na vulcaniza??o do elast?mero isobutileno-isopreno |
| author |
Gobbi, Vinicius Guedes |
| author_facet |
Gobbi, Vinicius Guedes |
| author_role |
author |
| dc.contributor.advisor1.fl_str_mv |
Mendon?a, Roberta Helena |
| dc.contributor.advisor1ID.fl_str_mv |
091.875.927-70 |
| dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/3724636742992170 |
| dc.contributor.advisor-co1.fl_str_mv |
Thir?, Rossana Mara da Silva Moreira |
| dc.contributor.advisor-co1ID.fl_str_mv |
018.545.877-73 |
| dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/5313449816997467 |
| dc.contributor.referee1.fl_str_mv |
Mendon?a, Roberta Helena |
| dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/3724636742992170 |
| dc.contributor.referee2.fl_str_mv |
Thir?, Rossana Mara da Silva Moreira |
| dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/5313449816997467 |
| dc.contributor.referee3.fl_str_mv |
Bastos, Daniele Cruz |
| dc.contributor.referee3Lattes.fl_str_mv |
http://lattes.cnpq.br/6597101803506089 |
| dc.contributor.referee4.fl_str_mv |
Machado J?nior, H?lio Fernandes |
| dc.contributor.referee4Lattes.fl_str_mv |
http://lattes.cnpq.br/3462534255321209 |
| dc.contributor.authorID.fl_str_mv |
136.511.877-05 |
| dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/5425604255656427 |
| dc.contributor.author.fl_str_mv |
Gobbi, Vinicius Guedes |
| contributor_str_mv |
Mendon?a, Roberta Helena Thir?, Rossana Mara da Silva Moreira Mendon?a, Roberta Helena Thir?, Rossana Mara da Silva Moreira Bastos, Daniele Cruz Machado J?nior, H?lio Fernandes |
| dc.subject.por.fl_str_mv |
Isobutileno-isopreno Dissulfeto de tetrametil-tiuram Dissulfeto de tetrabenzil-tiuram Dibenzil-ditiocarbamato de zinco |
| topic |
Isobutileno-isopreno Dissulfeto de tetrametil-tiuram Dissulfeto de tetrabenzil-tiuram Dibenzil-ditiocarbamato de zinco Isobutylene-isoprene Tetramethyl-thiuram disulfide Tetrabenzyl-thiuram disulfide zinc dibenzyl dithiocarbamate Engenharia Qu?mica |
| dc.subject.eng.fl_str_mv |
Isobutylene-isoprene Tetramethyl-thiuram disulfide Tetrabenzyl-thiuram disulfide zinc dibenzyl dithiocarbamate |
| dc.subject.cnpq.fl_str_mv |
Engenharia Qu?mica |
| description |
Nitrosamines are considered carcinogenic by a large number of international organizations and regulatory authorities. During the vulcanization process, the formation of nitrosamines occurs, mainly N-nitroso-dimethylamine, N-nitroso-diethylamine, N-nitroso-morpholine. Accelerators are the main cause of the emergence of nitrosamines, such as tetramethyl-thiuram disulphide (TMTD), which contains in its molecular structure secondary amine groups. Some accelerators exhibit kinetic behavior similar to TMTD such as tetrabenzylthiuram disulphide (TBzTD) and zinc dibenzyl dithiocarbamate (ZBEC) and, according to the literature, do not release noxious nitrosamines into the environment. The objective of the present work was the comparison of compounds presenting the isobutylene-isoprene (IIR) elastomer by means of a standard formulation used for confection of air chambers, and the production of compounds using the TBzTD and ZBEC accelerators and the standard compound using TMTD. For this, an experimental design was proposed for the production of these compounds in a laboratory banbury. Through the rheological characterization, it was noticed that the TBzTD and ZBEC accelerators do not present the same kinetic behavior, especially when the maximum torque (MH) values were analyzed during vulcanization in the IIR elastomer. The MH experimental data obtained were correlated through the least square method (RNL-MMQ) and the interpolation technique (TPSIM), allowing the evaluation of the effect of TBzTD and ZBEC accelerators on the compounds produced. In addition, through the physical-mechanical and thermo-dynamic measurements, a decrease in mechanical properties was observed for the TBzTD and ZBEC accelerator compounds compared to the standard compound. Such observation is linked to the difference in formation of crosslinks during the vulcanization step between the accelerators studied. The results of FTIR and swelling indexes corroborated to the observed trend that the TMTD accelerator, unlike the TBzTD and ZBEC accelerators, promotes a greater formation of crosslinks than the accelerators compared |
| publishDate |
2019 |
| dc.date.issued.fl_str_mv |
2019-07-01 |
| dc.date.accessioned.fl_str_mv |
2021-10-26T14:35:03Z |
| dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
| dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
| format |
masterThesis |
| status_str |
publishedVersion |
| dc.identifier.citation.fl_str_mv |
GOBBI, Vinicius Guedes. Estudo comparativo entre os aceleradores TMTD, TBzTD e ZBEC na vulcaniza??o do elast?mero isobutileno-isopreno.2019. 95f.. Disserta??o (Mestrado em Engenharia Qu?mica ) - Instituto de Tecnologia, Universidade Federal Rural do Rio de Janeiro, Serop?dica, RJ, 2019. |
| dc.identifier.uri.fl_str_mv |
https://tede.ufrrj.br/jspui/handle/jspui/5172 |
| identifier_str_mv |
GOBBI, Vinicius Guedes. Estudo comparativo entre os aceleradores TMTD, TBzTD e ZBEC na vulcaniza??o do elast?mero isobutileno-isopreno.2019. 95f.. Disserta??o (Mestrado em Engenharia Qu?mica ) - Instituto de Tecnologia, Universidade Federal Rural do Rio de Janeiro, Serop?dica, RJ, 2019. |
| url |
https://tede.ufrrj.br/jspui/handle/jspui/5172 |
| dc.language.iso.fl_str_mv |
por |
| language |
por |
| dc.relation.references.por.fl_str_mv |
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