Browsing by Author "Velasco Perero, José Ignacio"Més informacióMés informació

Now showing items 1-20 of 91

  • Aplicación de la Mecánica de la Fractura Post-Cedencia a Polímeros 

    Maspoch Rulduà, Mª Lluïsa; Franco Urquiza, Edgar Adrian; Gamez Pérez, José; Sánchez Soto, Miguel; Velasco Perero, José Ignacio; Santana Pérez, Orlando Onofre; Martínez Benasat, Antonio (2010-07-30)
    Article
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    La técnica del trabajo esencial de fractura (EWF) se ha utilizado en la caracterización a fractura de materiales que desarrollan una amplia ductilidad y donde ocurre una completa cedencia antes del inicio de la propagación ...

  • Application of layered nanoparticles in the micromechanical reinforcement and flame retardancy of polymer foams 

    Redondo Realinho, Vera Cristina de; Antunes, Marcelo de Sousa Pais; Velasco Perero, José Ignacio (Studium Press LLC, 2013)
    Part of book or chapter of book
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    A great deal of attention has been given in the last years to the study of the influence of incorporating nanosized particles and particularly nanoparticles with a flat-like morphology such as nanoclays or layered double ...

  • Assessment of the conditions of the thermoplastic extrusion process in the bioactive and mechanical properties of flexible films based on starch and Brazilian pepper 

    Matta Fakhouri, Farayde; Freitas de Lima, F.; Cardoso, Claudia; Martelli, Silvia; Antunes, Marcelo de Sousa Pais; Mei, Lucia Helena Innocentini; Yamashita, Fábio; Velasco Perero, José Ignacio (2018)
    Conference lecture
    Open Access
    The objective of this work was to produce, through the thermoplastic extrusion process followed by blowing, manioc starch-based flexible films added with Brazilian pepper oil as an antioxidant and plasticizer agent, and ...

  • Broad-band electrical conductivity of carbon nanofibre-reinforced polypropylene foams 

    Antunes, Marcelo de Sousa Pais; Mudarra López, Miguel; Velasco Perero, José Ignacio (2011)
    Article
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    The influence of foaming a semi-crystalline polymer reinforced with different concentrations of carbon nanofibres (0–20 wt.%) on the formation of an electrically conductive network was studied at room temperature using an ...

  • Caracterización mecánica de espumas rígidas multifuncionales de poliuretano 

    Antunes, Marcelo de Sousa Pais; Cano, Álvaro; Redondo Realinho, Vera Cristina de; Arencón Osuna, David; Velasco Perero, José Ignacio (2011)
    Conference report
    Open Access
    En el presente trabajo se prepararon y caracterizaron espumas de poliuretano con refuerzo multi-escalar combinando concentraciones variables de arcilla organofílica (montmorillonita) y de lana de esparto, con el propósito ...

  • Caracterización mecánica, térmica y a fuego de aerogeles arcilla/polímero modificados con partículas 

    Sánchez Soto, Miguel; Wang, Liang; Martínez Benasat, Antonio; Velasco Perero, José Ignacio; Santana Pérez, Orlando Onofre; Maspoch Rulduà, Mª Lluïsa (2013)
    Conference report
    Open Access
    Los aerogeles son una clase de materiales que se caracteriza por su extrema ligereza y alto contenido de aire. En este trabajo se han preparado diferentes aerogeles polímero/arcilla (PVOH/Na+-MMT) mediante un proceso simple ...

  • Characterization of flame retardant polypropylene-magnesium hydroxide composite foams 

    Antunes, Marcelo de Sousa Pais; Haurie Ibarra, Laia; Velasco Perero, José Ignacio (2009)
    Conference lecture
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    Magnesium hydroxide filled polypropylene foams have been prepared in order to analyze the foaming effects on the microstructure, flame and thermo-mechanical beaviour of the polypropylene composites. Several load percentages ...

  • Characterization of highly filled magnesium hydroxide-polypropylene composite foams 

    Antunes, Marcelo de Sousa Pais; Velasco Perero, José Ignacio; Haurie Ibarra, Laia (2011)
    Article
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    Magnesium hydroxide—filled polypropylene foams were prepared by a compression-molding chemical foaming process and studied considering the effects of foaming and the presence of the particles on the microstructure (cellular ...

  • Characterization of polycarbonate foam structures prepared by one-step SC-CO2 dissolution process 

    Gedler, Gabriel; Antunes, Marcelo de Sousa Pais; Redondo Realinho, Vera Cristina de; Velasco Perero, José Ignacio (2012)
    Conference lecture
    Open Access
    In this communication polycarbonate foams were prepared by a supercritical CO2 dissolution one-step batch foaming process. Firstly, CO2 diffusion behavior in polycarbonate was studied by means of desorption experiments. ...

  • Characterization of poly(ethylene-co-vinyl acetate) (EVA) filled with low grade magnesium hydroxide 

    Fernández Renna, Ana Inés; Haurie Ibarra, Laia; Formosa Mitjans, Joan; Chimenos Ribera, Josep Maria; Antunes, Marcelo de Sousa Pais; Velasco Perero, José Ignacio (2008)
    Article
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    Low-grade magnesium hydroxide (LG-MH) is a solid by-product that undergoes an endothermic decomposition in the temperature range of 300–750 C. Due to its thermal behaviour and its lower cost relative to pure Mg(OH)2, ...

  • Characterization of rigid polypropylene-based microcellular foams produced by batch foaming processes 

    Velasco Perero, José Ignacio; Antunes, Marcelo de Sousa Pais; Redondo Realinho, Vera Cristina de; Ardanuy Raso, Mònica (2011)
    Article
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    The properties of polypropylene (PP) foams can be extended by controlling the cellular structure and adding functional fillers. PP-based microcellular foams having an interesting combination of mechanical and transport ...

  • Comportamiento a fractura de dos grados comerciales PLA: influencia de la estructura cristalina 

    Gamez Pérez, José; Velázquez Infante, Julio Cesar; Franco Urquiza, Edgar Adrian; Velasco Perero, José Ignacio; Maspoch Rulduà, Mª Lluïsa (2010)
    Conference report
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    En este trabajo se ha estudiado el efecto de un tratamiento de rejuvenecimiento aplicado a láminas obtenidas por extrusión-calandra a partir de dos grados comerciales de PLA, con diferentes purezas ópticas. Se han evaluado ...

  • COMPORTAMIENTO A FRACTURA DE FILMS DE NANOCOMPUESTOS DE UN COPOLÍMERO EVOH 

    Maspoch Rulduà, Mª Lluïsa; Franco Urquiza, Edgar Adrian; Boggio, M; Boitel, H; Velasco Perero, José Ignacio; Santana Pérez, Orlando Onofre (2006)
    Conference report
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    Se analizó el comportamiento a fractura de films de nanocompuestos de un copolímero EVOH con diferentes porcentajes en peso de dos tipos de arcillas montmorillonitas. Los nanocompuestos fueron obtenidos a través de ...

  • Comportamiento a fractura de láminas de espuma de polipropileno producidas mediante dos métodos diferentes de espumación 

    Arencón Osuna, David; Antunes, Marcelo de Sousa Pais; Martínez Benasat, Antonio; Velasco Perero, José Ignacio (2012)
    Conference report
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    Dos tipos de espumas flexibles de baja densidad . basadas en polipropileno y producidas por dos métodos diferentes de espumación (espumación física y espumación química) .se han caracterizado utilizando el concepto del ...

  • Comportamiento mecánico dinámico de espumas de policarbonato 

    Gedler, Gabriel; Antunes, Marcelo de Sousa Pais; Redondo Realinho, Vera Cristina de; Velasco Perero, José Ignacio (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2014)
    Conference report
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    Se caracterizan por DMTA espumas de policarbonato (PC) y de policarbonato con nanopartículas de grafeno, producidas mediante dos procesos diferentes de disolución de CO2 supercrítico con posterior expansión en una o en dos ...

  • Composite and biocomposite foams based on polypropylene with reinforcements and functional fillers prepared by supercritical CO2 dissolution 

    Antunes, Marcelo de Sousa Pais; Redondo Realinho, Vera Cristina de; Ardanuy Raso, Mònica; Maspoch Rulduà, Mª Lluïsa; Velasco Perero, José Ignacio (2011)
    Conference report
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    One of the actual trends in polymer foams consists in the development of new materials by combining density reduction through foaming with the incorporation of functional fillers. This would enable to obtain materials with ...

  • Compression properties and cellular structure of polyurethane composite foams combining nanoclay and different reinforcements 

    Antunes, Marcelo de Sousa Pais; Cano, Álvaro; Redondo Realinho, Vera Cristina de; Arencón Osuna, David; Velasco Perero, José Ignacio (2014-11)
    Article
    Open Access
    In the present work we prepared and characterized several polyurethane (PU) composite foams by combining variable concentrations of nanoclay (montmorillonite, MMT) with metal wires or low cost cellulosic-based reinforcements, ...

  • Corn starch and gelatin-based films added with guabiroba pulp for application in food packaging 

    Malherbi, Naiane Miriam; Schmitz, Ana Camila; Grando, Remili Cristiani; Bilck, Ana Paula; Velasco Perero, José Ignacio (Elsevier Ltd, 2019-03-01)
    Article
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    The guabiroba pulp (GP) has natural antioxidant compounds, such as phenolic compounds and ascorbic acid. The aim of this work was to produce an active biodegradable film based on blends of gelatin (GEL) and corn starch ...

  • Diseño y caracterización de mezclas EVA/plastómero para su empleo en compuestos de aislamiento acústico 

    Niubó Eslava, Maria; Fernández Renna, Ana Inés; Haurie Ibarra, Laia; Redondo Realinho, Vera Cristina de; Velasco Perero, José Ignacio (2010-06-23)
    Conference lecture
    Restricted access - publisher's policy
    En el desarrollo de materiales aislantes acústicos para sectores como la automoción, se utilizan habitualmente compuestos poliméricos con un contenido en cargas inorgánicas superior al 70% en peso. Este hecho obliga a ...

  • Effect of an ionomer on the mechanical performance of flame retardant ABS formulations 

    Yurdakul, Zeynep; Redondo Realinho, Vera Cristina de; Antunes, Marcelo de Sousa Pais; Aydin, Süheyla; Velasco Perero, José Ignacio (2018)
    Conference report
    Open Access
    Acrylonitrile butadiene styrene (ABS) is a widely used thermoplastic copolymer due to its desirable properties such as good mechanical performance (toughness, impact resistance, among others), ease of processability, ...