Avaliação da densidade de espumas de poliuretanos de PET e PC com mistura de diisocianatos
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2023 |
| Outros Autores: | , , , , , |
| Tipo de documento: | Artigo |
| Idioma: | por eng spa |
| Título da fonte: | Brazilian Journal of Production Engineering |
| Texto Completo: | https://periodicos.ufes.br/bjpe/article/view/43276 |
Resumo: | The mechanical properties of polyurethanes (PU) depend on the density of these materials. Mixing diisocyanates in the formulation of PU's is one of the strategies when the stoichiometric ratio of polyol to diisocyanate is less than one. Polyester polyols obtained from the partial depolymerization of polyethylene terephthalate (PET) and polycarbonate (PC) through the glycerolysis process form PUs with 4,4'-diphenylmethane diisocyanate (MDI) and 1,6-hexamethylene diisocyanate (HDI). Comparatively, PUs were synthesized with MDI only and also with a mixture of 10% HDI and 90% MDI, for each type of polyol. It was observed that the density of the PU obtained with the mixture increased by 16% for the PU made from depolymerized PET (PET-OL) and by 50% for the PU made from depolymerized PC (PC-OL). A reduction in water absorption was observed for both polyurethanes obtained with the mixture of diisocyanates. |
| id |
UFES-11_6d8f786968fbb2578ae86df1bf94880a |
|---|---|
| oai_identifier_str |
oai:periodicos.ufes.br:article/43276 |
| network_acronym_str |
UFES-11 |
| network_name_str |
Brazilian Journal of Production Engineering |
| repository_id_str |
|
| spelling |
Avaliação da densidade de espumas de poliuretanos de PET e PC com mistura de diisocianatosEvaluation of the density of PET and PC polyurethane foams with a mixture of diisocyanatesEvaluación de la densidad de espumas de poliuretano PET y PC con una mezcla de diisocianatos PoliuretanoDensidadeHDI/MDIPolyurethaneDensityHDI/MDIPoliuretanoDensidadIDH/IDMThe mechanical properties of polyurethanes (PU) depend on the density of these materials. Mixing diisocyanates in the formulation of PU's is one of the strategies when the stoichiometric ratio of polyol to diisocyanate is less than one. Polyester polyols obtained from the partial depolymerization of polyethylene terephthalate (PET) and polycarbonate (PC) through the glycerolysis process form PUs with 4,4'-diphenylmethane diisocyanate (MDI) and 1,6-hexamethylene diisocyanate (HDI). Comparatively, PUs were synthesized with MDI only and also with a mixture of 10% HDI and 90% MDI, for each type of polyol. It was observed that the density of the PU obtained with the mixture increased by 16% for the PU made from depolymerized PET (PET-OL) and by 50% for the PU made from depolymerized PC (PC-OL). A reduction in water absorption was observed for both polyurethanes obtained with the mixture of diisocyanates.As propriedades mecânicas dos poliuretanos (PU) são dependentes da densidade destes materiais. A mistura de diisocianatos na formulação dos PU’s é uma das estratégias quando se tem razão estequiométrica poliol e diisocianato menor do que um. Os polióis poliésteres obtidos pelo processo de despolimerização parcial do politereftalato de etileno (PET) e do policarbonato (PC) pelo processo de glicerólise formam PU’s com os diisocianato 4,4’-difenilmetano diisocianato (MDI) e com o 1,6- hexametileno diisocianato (HDI). De modo comparativo foram sintetizados PU’s apenas com MDI e também com uma mistura de 10% de HDI e 90% de MDI, para cada tipo de poliol. Observou-se que o PU obtido com a mistura teve sua densidade aumentada em 16% para o PU a partir de PET despolimeriado (PET-OL) e de 50% para o PU obtido a partir do PC despolimerizado (PC-OL). Observou-se a redução da absorção de água para ambos os poliuretanos obtidos com a mistura de diisocianatos.Las propiedades mecánicas de los poliuretanos (PU) dependen de la densidad de estos materiales. La mezcla de diisocianatos en las formulaciones de PU es una de las estrategias cuando la relación estequiométrica entre poliol y diisocianato es inferior a uno. Los polioles de poliéster obtenidos a partir de la despolimerización parcial de tereftalato de polietileno (PET) y policarbonato (PC) mediante el proceso de glicerólisis forman PUs con diisocianato de 4,4'-difenilmetano (MDI) y diisocianato de 1,6-hexametileno (HDI). Comparativamente, se sintetizaron PUs con MDI solo y también con una mezcla de 10% de HDI y 90% de MDI, para cada tipo de poliol. Se observó que la densidad del PU obtenido con la mezcla aumentaba un 16% para el PU fabricado con PET despolimerizado (PET-OL) y un 50% para el PU fabricado con PC despolimerizado (PC-OL). Se observó una reducción de la absorción de agua en ambos poliuretanos obtenidos con la mezcla de diisocianatos.Universidade Federal do Espírito Santo - UFES2023-12-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfimage/jpegimage/jpegimage/jpegapplication/pdfhttps://periodicos.ufes.br/bjpe/article/view/43276Brazilian Journal of Production Engineering; Vol. 9 No. 6 (2023): Special Edition "Chemistry Week of the North of Espírito Santo (SEQUINES)"; 40-44Brazilian Journal of Production Engineering; Vol. 9 Núm. 6 (2023): Edición Especial "Semana de la Química del Norte de Espírito Santo (SEQUINES)"; 40-44Brazilian Journal of Production Engineering; v. 9 n. 6 (2023): Edição Especial "Semana de Química do Norte do Espírito Santo (SEQUINES)"; 40-442447-5580reponame:Brazilian Journal of Production Engineeringinstname:Universidade Federal do Espírito Santo (UFES)instacron:UFESporengspahttps://periodicos.ufes.br/bjpe/article/view/43276/29134https://periodicos.ufes.br/bjpe/article/view/43276/29130https://periodicos.ufes.br/bjpe/article/view/43276/29131https://periodicos.ufes.br/bjpe/article/view/43276/29132https://periodicos.ufes.br/bjpe/article/view/43276/29133Copyright (c) 2023 Brazilian Journal of Production Engineeringhttps://creativecommons.org/licenses/by-nc-sa/4.0info:eu-repo/semantics/openAccessSouza, Kamilly S.Bigles, Luiz H.Lima, Luiz H. deSilva, Paulo daSilvero , Samuel L.Passinhas, David Manuel CostaMelo, Breno Nonato2024-03-29T13:31:26Zoai:periodicos.ufes.br:article/43276Revistahttps://periodicos.ufes.br/bjpePUBhttps://periodicos.ufes.br/bjpe/oairodrigo.r.freitas@ufes.br2447-55802447-5580opendoar:2024-03-29T13:31:26Brazilian Journal of Production Engineering - Universidade Federal do Espírito Santo (UFES)false |
| dc.title.none.fl_str_mv |
Avaliação da densidade de espumas de poliuretanos de PET e PC com mistura de diisocianatos Evaluation of the density of PET and PC polyurethane foams with a mixture of diisocyanates Evaluación de la densidad de espumas de poliuretano PET y PC con una mezcla de diisocianatos |
| title |
Avaliação da densidade de espumas de poliuretanos de PET e PC com mistura de diisocianatos |
| spellingShingle |
Avaliação da densidade de espumas de poliuretanos de PET e PC com mistura de diisocianatos Souza, Kamilly S. Poliuretano Densidade HDI/MDI Polyurethane Density HDI/MDI Poliuretano Densidad IDH/IDM |
| title_short |
Avaliação da densidade de espumas de poliuretanos de PET e PC com mistura de diisocianatos |
| title_full |
Avaliação da densidade de espumas de poliuretanos de PET e PC com mistura de diisocianatos |
| title_fullStr |
Avaliação da densidade de espumas de poliuretanos de PET e PC com mistura de diisocianatos |
| title_full_unstemmed |
Avaliação da densidade de espumas de poliuretanos de PET e PC com mistura de diisocianatos |
| title_sort |
Avaliação da densidade de espumas de poliuretanos de PET e PC com mistura de diisocianatos |
| author |
Souza, Kamilly S. |
| author_facet |
Souza, Kamilly S. Bigles, Luiz H. Lima, Luiz H. de Silva, Paulo da Silvero , Samuel L. Passinhas, David Manuel Costa Melo, Breno Nonato |
| author_role |
author |
| author2 |
Bigles, Luiz H. Lima, Luiz H. de Silva, Paulo da Silvero , Samuel L. Passinhas, David Manuel Costa Melo, Breno Nonato |
| author2_role |
author author author author author author |
| dc.contributor.author.fl_str_mv |
Souza, Kamilly S. Bigles, Luiz H. Lima, Luiz H. de Silva, Paulo da Silvero , Samuel L. Passinhas, David Manuel Costa Melo, Breno Nonato |
| dc.subject.por.fl_str_mv |
Poliuretano Densidade HDI/MDI Polyurethane Density HDI/MDI Poliuretano Densidad IDH/IDM |
| topic |
Poliuretano Densidade HDI/MDI Polyurethane Density HDI/MDI Poliuretano Densidad IDH/IDM |
| description |
The mechanical properties of polyurethanes (PU) depend on the density of these materials. Mixing diisocyanates in the formulation of PU's is one of the strategies when the stoichiometric ratio of polyol to diisocyanate is less than one. Polyester polyols obtained from the partial depolymerization of polyethylene terephthalate (PET) and polycarbonate (PC) through the glycerolysis process form PUs with 4,4'-diphenylmethane diisocyanate (MDI) and 1,6-hexamethylene diisocyanate (HDI). Comparatively, PUs were synthesized with MDI only and also with a mixture of 10% HDI and 90% MDI, for each type of polyol. It was observed that the density of the PU obtained with the mixture increased by 16% for the PU made from depolymerized PET (PET-OL) and by 50% for the PU made from depolymerized PC (PC-OL). A reduction in water absorption was observed for both polyurethanes obtained with the mixture of diisocyanates. |
| publishDate |
2023 |
| dc.date.none.fl_str_mv |
2023-12-15 |
| dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.uri.fl_str_mv |
https://periodicos.ufes.br/bjpe/article/view/43276 |
| url |
https://periodicos.ufes.br/bjpe/article/view/43276 |
| dc.language.iso.fl_str_mv |
por eng spa |
| language |
por eng spa |
| dc.relation.none.fl_str_mv |
https://periodicos.ufes.br/bjpe/article/view/43276/29134 https://periodicos.ufes.br/bjpe/article/view/43276/29130 https://periodicos.ufes.br/bjpe/article/view/43276/29131 https://periodicos.ufes.br/bjpe/article/view/43276/29132 https://periodicos.ufes.br/bjpe/article/view/43276/29133 |
| dc.rights.driver.fl_str_mv |
Copyright (c) 2023 Brazilian Journal of Production Engineering https://creativecommons.org/licenses/by-nc-sa/4.0 info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
Copyright (c) 2023 Brazilian Journal of Production Engineering https://creativecommons.org/licenses/by-nc-sa/4.0 |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf image/jpeg image/jpeg image/jpeg application/pdf |
| dc.publisher.none.fl_str_mv |
Universidade Federal do Espírito Santo - UFES |
| publisher.none.fl_str_mv |
Universidade Federal do Espírito Santo - UFES |
| dc.source.none.fl_str_mv |
Brazilian Journal of Production Engineering; Vol. 9 No. 6 (2023): Special Edition "Chemistry Week of the North of Espírito Santo (SEQUINES)"; 40-44 Brazilian Journal of Production Engineering; Vol. 9 Núm. 6 (2023): Edición Especial "Semana de la Química del Norte de Espírito Santo (SEQUINES)"; 40-44 Brazilian Journal of Production Engineering; v. 9 n. 6 (2023): Edição Especial "Semana de Química do Norte do Espírito Santo (SEQUINES)"; 40-44 2447-5580 reponame:Brazilian Journal of Production Engineering instname:Universidade Federal do Espírito Santo (UFES) instacron:UFES |
| instname_str |
Universidade Federal do Espírito Santo (UFES) |
| instacron_str |
UFES |
| institution |
UFES |
| reponame_str |
Brazilian Journal of Production Engineering |
| collection |
Brazilian Journal of Production Engineering |
| repository.name.fl_str_mv |
Brazilian Journal of Production Engineering - Universidade Federal do Espírito Santo (UFES) |
| repository.mail.fl_str_mv |
rodrigo.r.freitas@ufes.br |
| _version_ |
1797047318617260032 |