Powered by OpenAIRE graph
Found an issue? Give us feedback
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Recolector de Cienci...arrow_drop_down
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
versions View all 1 versions
addClaim

Análisis y caracterización de la estructura y dinámica molecular de redes de poliuretano mediante RMN de bajo campo

Authors: Diñeiro García, Laura; Salamanca, F. M.; Navarro Crespo, Rodrigo; Marcos-Fernández, Ángel;

Análisis y caracterización de la estructura y dinámica molecular de redes de poliuretano mediante RMN de bajo campo

Abstract

En la actualidad, uno de los grandes problemas presentes en el sector de la construcción es el del pinchazo de neumáticos de vehículos de obra civil, puesto que supone pérdidas económicas considerables. Como solución a este inconveniente, en el marco del presente trabajo, se ofrece un tipo particular de poliuretanos elastoméricos, y más específicamente los ultrablandos. Las propiedades de estos rellenos de neumáticos se modularon a partir de cambios en la composición de los poliuretanos flexibles: catalizador, distribución de plastificante y exceso de isocianato. La caracterización de los nuevos materiales sintetizados se realizó mediante técnicas avanzadas de RMN de bajo campo en el dominio del tiempo, ensayos de compresión y medidas de dureza. De forma adicional, se introdujeron residuos procedentes de reciclado físico y químico de otras industrias en las matrices de los poliuretanos, con el objetivo de alinear este trabajo con un modelo de Economía Circular y obtener un producto de alto valor añadido.

Nowadays, one of the major problems in the construction sector is the puncture of tires of civil engineering vehicles since it entails con- siderable economic losses. As a solution to this inconvenience, a particular type of elas- tomeric polyurethanes, and more specifically ultra-soft ones, is offered in the framework of the present work. The properties of the- se tire fillers were modulated from changes in the composition of flexible polyurethanes: catalyst, plasticizer distribution and excess isocyanate. The characterization of the new synthesized materials was carried out by means of ad- vanced low-field NMR techniques in the time domain, compression tests and hardness measurements. Additionally, residues from physical and chemical recycling from other industries were introduced into the polyu- rethane matrices, with the aim of aligning this work with a Circular Economy model and obtaining a high added value product.

Keywords

Reciclado químico, RMN de bajo campo, plastificantes, Poliuretanos flexibles, Macizado de neumáticos.

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    0
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
    OpenAIRE UsageCounts
    Usage byUsageCounts
    visibility views 53
    download downloads 85
  • 53
    views
    85
    downloads
    Powered byOpenAIRE UsageCounts
Powered by OpenAIRE graph
Found an issue? Give us feedback
visibility
download
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
OpenAIRE UsageCountsViews provided by UsageCounts
downloads
OpenAIRE UsageCountsDownloads provided by UsageCounts
0
Average
Average
Average
53
85
Green