Now showing items 2-11 of 11

  • Foaming behavior, cellular structure and physical properties of polybenzoxazine foams 

    Ardanuy Raso, Mònica; Rodríguez-Pérez, Miguel Ángel; Saja, José Antonio de; Velasco Perero, José Ignacio (2012-04-10)
    Article
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    In this paper, polymer foams based on a benzoxazine resin have been successfully prepared using azodicarbonamide (ADC) as a chemical blowing agent and have been characterized regarding their foaming behavior, cellular ...
  • Foaming of polypropylene by using both chemical and physical blowing agents. A comparative study of the structure and physical properties 

    Saiz-Arroyo, Cristina; Rodríguez-Pérez, Miguel Ángel; Sousa Pais Antunes, Marcelo de; Velasco Perero, José Ignacio; Saja, José Antonio de (2010)
    Conference report
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    Microcellular foams have focused attention of researches due to improvement in some properties when compared to conventional foams. Several production routes for these materials have been developed although most of them ...
  • Heat transfer in polypropylene-based foams produced using different foaming processes 

    Sousa Pais Antunes, Marcelo de; Velasco Perero, José Ignacio; Redondo Realinho, Vera Cristina de; Martínez Velasco, Antonio Benito; Rodríguez-Pérez, Miguel Ángel; Saja, José Antonio de (2009-10)
    Article
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    This paper presents the characterization of the cellular structure and thermal conduction behaviour of polypropylene foams produced using different foaming processes, with the aim of selecting the best possible PP foam ...
  • Influence of foaming process on the structure-properties relationship of foamed LDPE/silica nanocomposites 

    Saiz Arroyo, Cristina; Rodríguez Pérez, Miguel Ángel; Velasco Perero, José Ignacio; Saja, José Antonio de (Elsevier, 2013-05)
    Article
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    In this paper LDPE/silica nanocomposites are foamed by two different processes. First one is the pressure quench method which is based on the use of a physical blowing agent and second one is the improved compression ...
  • Moulded polypropylene foams produced using chemical or physical blowing agents: structure–properties relationship 

    Saiz-Arroyo, Cristina; Saja, José Antonio de; Velasco Perero, José Ignacio; Rodríguez-Pérez, Miguel Ángel (2012)
    Article
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    Polypropylene (PP) foams have become essential items due to their excellent properties. Nevertheless, obtaining net-shaped PP foams with medium relative densities is a complicated issue. In this article, two processes ...
  • Optical expandometry: a technique to analyze the expansion kinetics of chemically blown thermoplastic foams 

    Solórzano Quijano, Eusebio; Sousa Pais Antunes, Marcelo de; Saiz-Arroyo, Cristina; Rodríguez-Pérez, Miguel Ángel; Velasco Perero, José Ignacio; Saja, José Antonio de (2012-07)
    Article
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    A novel technique to determine in situ the free expansion kinetics of chemically foamed thermoplastic foams, so-called optical expandometry, is presented in this work. This technique is based on the camera monitoring ...
  • Polypropylene/Clay Nanocomposites: Combined effects of clay treatment and compatibilizer polymers on the structure and properties 

    Velasco Perero, José Ignacio; Ardanuy Raso, Mònica; Redondo Realinho, Vera Cristina de; Sousa Pais Antunes, Marcelo de; Fernández Renna, Ana Inés; González-Peña, J.I.; Rodríguez-Pérez, Miguel Ángel; Saja, José Antonio de (2006)
    Article
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    Combined effects of clay treatment and compatibilizer polymers on the structure and properties of polypropylene/clay nanocomposites were studied. Dynamic mechanical analysis was used to analyze comparatively the dynamic ...
  • The effect of anionic clay particles on the structure and thermomechanical behavior of sodium partially-neutralized EMAA ionomer 

    Ardanuy Raso, Mònica; Velasco Perero, José Ignacio; Rodríguez-Pérez, Miguel Ángel; Saja, José Antonio de (2010-06-20)
    Article
    Open Access
    Nanocomposites based on a sodium partially-neutralized ionomer of poly (ethylene-comethacrylic acid) (EMAA) and MgAl layered double hydroxide (LDH) particles with and without organic modification were prepared from a melt ...
  • Thermal conductivity anisotropy in polypropylene foams prepared by supercritical CO2 dissolution 

    Sousa Pais Antunes, Marcelo de; Redondo Realinho, Vera Cristina de; Velasco Perero, José Ignacio; Solórzano Quijano, Eusebio; Rodríguez-Pérez, Miguel Ángel; Saja, José Antonio de (2012-09)
    Article
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    Different relative density polypropylene foams were prepared by means of two foaming processes: chemical foaming by compression moulding and physical foaming by high pressure CO2 dissolution. By controlling the foaming ...
  • Thermal Conductivity of Carbon Nanofibre-Polypropylene Composite Foams 

    Sousa Pais Antunes, Marcelo de; Redondo Realinho, Vera Cristina de; Solórzano Quijano, Eusebio; Rodríguez-Pérez, Miguel Ángel; Saja, José Antonio de; Velasco Perero, José Ignacio (2010)
    Article
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    Carbon nanofibre-reinforced polypropylene nanocomposites containing from 5 to 20 wt.% of carbon nanofibres and a chemical blowing agent were melt-compounded and later foamed using compression-moulding. Alongside their ...