Browsing by Subject "Materials escumosos"

Now showing items 1-20 of 21

    • Aligeramiento de peso de PP/GF: materiales compuestos espumados para aplicaciones de automoción 

      Gomez-Monterde, J.; Schulte, M.; Hain, J; Frigola Ferrer, Jaime Ignacio; Barriuso, Eduardo; Sánchez Soto, Miguel; Maspoch Rulduà, M. Lluïsa (2018)
      Article
      Open Access
      El aligeramiento de peso es una de las principales estrategias llevadas a cabo por los fabricantes de automóvile s para reducir consumo de combustible y emisiones de gases de efecto invernadero. Debido a la creciente demanda ...

    • Boron/nitrogen flame retardant additives cross-linked cellulose nanofibril/montmorillonite aerogels towards super low flammability and improved mechanical properties 

      Wang, Liang; Sánchez Soto, Miguel; Fang, Jie; Xia, Zhao-Peng; Liu, Yong (2019-04-07)
      Article
      Open Access
      Low-flammability freeze-dried cellulose nanofibril (CNF)/sodium montmorillonite (MMT) aerogels with improved mechanical properties were fabricated via a facile cross-linking of boric acid (BA) and melamine-formaldehyde ...

    • Caracterización de ABS microcelular obtenido mediante moldeo por inyección con espumación física 

      BERNABÉ MIGUEL, VICTOR (Universitat Politècnica de Catalunya, 2015-01)
      Master thesis (pre-Bologna period)
      Open Access
      El proyecto tiene como objetivo definir la ventana de proceso de inyección para microespumación MuCell® de probetas de ABS en dos niveles de reducción de peso (10% y 17%), determinar una metodología de análisis de ...

    • Caracterización de mezclas REX-PLA/ABS microespumadas mediante moldeo por inyección MuCell® 

      Gavorskis Cardenas, Andrea Guadalupe (Universitat Politècnica de Catalunya, 2016-10-03)
      Master thesis
      Open Access
      Este proyecto tiene como objetivo la preparación y caracterización de probetas microespumadas mediante moldeo por inyección MuCell® de una mezcla de PLA con ABS, usando ABS injertado con anhídrido maleico como agente ...

    • Caracterización microestructural de un modelo sintético de hueso 

      Lucain, Aurélie (Universitat Politècnica de Catalunya, 2011-02)
      Master thesis (pre-Bologna period)
      Open Access
      En este PFC se ha caracterizado la microestructura de un modelo sintético de hueso trabecular. Se trata de unas espumas comerciales rígidas de poliuretano que ofrecen propiedades más uniformes que las de un hueso natural ...

    • Effect of microcellular foaming on the fracture behavior of ABS polymer 

      Gómez Monterde, Javier; Schulte, M.; Ilijevic, Stefan; Hain, J; Sánchez Soto, Miguel; Santana Pérez, Orlando Onofre; Maspoch Rulduà, M. Lluïsa (2016)
      Article
      Open Access
      In this work, the properties of microcellular ABS were studied. Foamed samples exhibited a solid skin/foamed core struc- ture, with some elongated cells in the flow direction, while spherical cells were mostly observed in ...

    • Effects of carbon nanotubes/graphene nanoplatelets hybrid systems on the structure and properties of polyetherimide-based foams 

      Abbasi, Hooman; Antunes, Marcelo de Sousa Pais; Velasco Perero, José Ignacio (2018-03-21)
      Article
      Open Access
      Foams based on polyetherimide (PEI) with carbon nanotubes (CNT) and PEI with graphene nanoplatelets (GnP) combined with CNT were prepared by water vapor induced phase separation. Prior to foaming, variable amounts of only ...

    • Espumas de cementos de fosfato de calcio como sistemas de liberación controlada de principios activos: optimización y propiedades de liberación 

      Douhaizenet, Marien (Universitat Politècnica de Catalunya, 2011-02)
      Master thesis (pre-Bologna period)
      Open Access
      Recientes trabajos del laboratorio BIBITE estudiaron la posibilidad de preparar cementos macroporosos, así como la utilización de cementos de fosfato de calcio (CPC) como sistemas de liberación de antibióticos. En este ...

    • Evaluation of the mechanical properties of Poly(Lactic) Acid/ABS Bio-Blend foams 

      Sánchez Soto, Miguel; Kamrani Moghadam, Mohammad Reza; Maspoch Rulduà, M. Lluïsa; Santana Pérez, Orlando Onofre; Cailloux, Jonathan (Springer, 2020-05-30)
      Part of book or chapter of book
      Restricted access - publisher's policy
      Foaming is a powerful method that allows lightening of products and reducing the amount of material used. Poly(lactic) acid (PLA) is considered a promising thermoplastic for the replacement of traditional non-biodegradable ...

    • Frozen delivery of Calcium Phosphate Foams 

      Marcinkowska, Malgorzata (Universitat Politècnica de Catalunya, 2013-07)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      The objective of this project si to freeze and unfreeze Calcium Phosphate Foams (CPFs) following different protocols, characterize the resulting materials, the effect of each protocol and select the optimized one. Synthetic ...

    • Halogen-free flame retardant polyolefin foams 

      Redondo Realinho, Vera Cristina de; Antunes, Marcelo de Sousa Pais; Santana Pérez, Orlando Onofre; Velasco Perero, José Ignacio (2012)
      Conference report
      Restricted access - publisher's policy
      The present work deals with the preparation and characterizacion of an improved fire-resistant ethylene-acrylate foamed material containing calcium carbonate and a silicon elastomer. This grade, usually employed on the ...

    • Microcellular PP/GF composites: morphological, mechanical and fracture characterization 

      Gomez Monterde, J.; Sánchez Soto, Miguel; Maspoch Rulduà, M. Lluïsa (2018-01-01)
      Article
      Open Access
      The aim of the present work is to analyze the morphology, mechanical properties and fracture behaviour of solid and foamed plates made of glass fiber-reinforced PP. The morphology exhibited a solid skin/foamed core structure, ...

    • Polyetherimide foams filled with low content of graphene nanoplatelets prepared by scCO2 dissolution 

      Abbasi, Hooman; Antunes, Marcelo de Sousa Pais; Velasco Perero, José Ignacio (Multidisciplinary Digital Publishing Institute (MDPI), 2019-02-13)
      Article
      Open Access
      Polyetherimide (PEI) foams with graphene nanoplatelets (GnP) were prepared by supercritical carbon dioxide (scCO2) dissolution. Foam precursors were prepared by melt-mixing PEI with variable amounts of ultrasonicated GnP ...

    • Polymeric Foams 

      Antunes, Marcelo de Sousa Pais; Velasco Perero, José Ignacio (Multidisciplinary Digital Publishing Institute (MDPI), 2019-07-12)
      Article
      Open Access

    • Polymeric Foams 

      Velasco Perero, José Ignacio; Antunes, Marcelo de Sousa Pais (MDPI, 2019-11)
      Book
      Open Access

    • Polyurethane foams from renewable and sustainable polyols 

      Finez Acero, Noemi (Universitat Politècnica de Catalunya / Universidade Técnica de Lisboa, 2013)
      Bachelor thesis
      Restricted access - author's decision
      Covenantee:   Universidade de Lisboa
      The aim of this thesis is the production of polyurethane foams with polyols from liquefied wood. The objective is to find the best combination of appropriate properties to polyurethane foams with maximum content of polyols ...

    • Preparación y caracterización de probetas microespumadas mediante moldeo por inyección MuCell® de polipropileno cargado con fibras de vidrio 

      Navarro Felip, Maria (Universitat Politècnica de Catalunya, 2015-06)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      Este proyecto de final de carrera se enmarca en un estudio más amplio que tiene por objetivo la reducción de peso de componentes de automoción para disminuir las emisiones de los vehículos. En este PFC se preparan y ...

    • Recent advances in carbon-based polymer nanocomposites for electromagnetic interference shielding 

      Abbasi, Hooman; Antunes, Marcelo de Sousa Pais; Velasco Perero, José Ignacio (2019-06)
      Article
      Open Access
      Carbon-based nanoparticles have recently generated a great attention, as they could create polymer nanocomposites with enhanced transport properties, overcoming some limitations of electrically-conductive polymers for high ...

    • Recent trends in polymeric foams and porous structures for electromagnetic interference shielding applications 

      Antunes, Marcelo de Sousa Pais (Multidisciplinary Digital Publishing Institute (MDPI), 2024-01-09)
      Article
      Open Access
      Polymer-based (nano)composite foams containing conductive (nano)fillers limit electromagnetic interference (EMI) pollution, and have been shown to act as good shielding materials in electronic devices. However, due to their ...

    • Temporal evolution of the domain structure in a Poisson-Voronoi transformation 

      Pineda Soler, Eloi; Crespo Artiaga, Daniel (Institute of Physics, 2007-06-07)
      Article
      Open Access
      The temporal evolution of the domain size and free boundary distributions is calculated for a Poisson–Voronoi transformation. In this kind of transformation a set of randomly distributed domain seeds start growing sim ...