Nanocellular polymer foams as promising high performance thermal insulation materials

Liu, Shanqiu; Duvigneau, Joost; Vancso, Gyula J.

doi:10.1016/j.eurpolymj.2015.01.039

Cited by 134 publications

(100 citation statements)

References 76 publications

(102 reference statements)

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“…Much effort have been made in recent years to demonstrate this expected improvement in nanoporous polymers as well. However, although there are patents [113,114] and articles [20,62,115] in which it is proposed to take advantage of this expected reduction in the thermal conductivity, to date there is only one experimental validation of this effect because of the technical difficulties associated with the production of nanoporous polymers.…”

Section: Pe [14]mentioning

confidence: 99%

Nanoporous polymeric materials: A new class of materials with enhanced properties

Notario

Pinto

Rodríguez‐Pérez

2016

Progress in Materials Science

179

125

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a b s t r a c tNanoporous polymeric materials are porous materials with pore sizes in the nanometer range (i.e., below 200 nm), processed as bulk or film materials, and from a wide set of polymers. Over the last several years, research and development on these novel materials have progressed significantly, because it is believed that the reduction of the pore size to the nanometer range could strongly influence some of the properties of porous polymers, providing unexpected and improved properties compared to conventional porous and microporous polymers and non-porous solids.In this review, the key properties of these nanoporous polymeric materials (mechanical, thermal, dielectric, optical, filtration, sensing, etc.) are analyzed. The experimental and theoretical results obtained up to date related to the structure-property relations are presented. In several sections, in order to present a more compressive approach, the trends obtained for nanoporous polymers are compared to those for metallic and ceramic nanoporous systems. Moreover, some specific characteristics of these materials, such as the consequences of the confinement of both gas and solid phases, are described. Likewise, the main production methods are briefly described. Finally, some of the potential applications of these materials are also discussed in this paper.

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Section: Pe [14]mentioning

confidence: 99%

Nanoporous polymeric materials: A new class of materials with enhanced properties

Notario

Pinto

Rodríguez‐Pérez

2016

Progress in Materials Science

179

125

View full text Add to dashboard Cite

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“…A close cell structure is a good candidate to be a life jacket material, while an open cell structure would be waterlogged. The open cell foams are for bedding, acoustical insulation car seating, and furniture, while the closed cell foams are suitable for thermal insulation, and they are generally rigid, which makes them a preferable lightweight material for automotive and aerospace [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Thermoplastic Foams: Processing, Manufacturing, and Characterization

Altan¹

2018

Recent Research in Polymerization

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Polymer foams have wide application area due to their light weight, resistance to impact, high thermal insulation, and damping properties. Automotive, packing industry, electronic, aerospace, building construction, bedding, and medical applications are some of the ields that polymer foams have been used. However, depending on their cell structure-open or closed cell-polymer foams have diferent properties and diferent application areas. In this work, the most used thermoplastic foams with closed cells such as polypropylene, polyethylene, and polystyrene or polylactic acid have been focused. Their melt strength, degree of crystallinity for semi-crystalline ones, and viscosity have great importance on cell morphology. Cells in small diameter with high dense in polymer matrix are preferable. However, obtaining ine cells is not easy in each case, and it is still under investigation for some polymers. There are several ways to improve cell morphology, and one of them is addition of nanoparticle to the polymer. During foaming process, nanoparticles behave like nucleating agent that cells nucleate at the boundary between polymer and the nanoparticle. Besides, foaming agents contribute the homogenous dispersion of the nanoparticles in the polymer matrix, and this improves the properties of the polymer foams and generates multifunctional material as polymer nanocomposite foams.

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“…For this reason, the study of the thermal conductivity, heat transfer mechanisms (HTM) and the theoretical modeling associated has gain great importance in the last years. Different authors, such as Solórzano et al ., Reglero Ruiz et al ., Antunes et al ., or Liu et al . have analyzed the different contribution of the HTM (convection, radiation, and conduction) for different cellular materials and polymer foams, depending on the relative density and thermal properties of the solid phase.…”

Section: Introductionmentioning

confidence: 99%

Microcellular polymeric foams based on 1‐vinyl‐2‐pyrrolidone and butyl‐acrylate with tuned thermal conductivity

Ruiz

Vallejos

Sanjuán

et al. 2017

J of Applied Polymer Sci

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Microcellular polymers have been produced by ScCO2 foaming, based on 1‐vinyl‐2‐pyrrolidone (VP) and butyl‐acrylate (BA). Three different copolymers were prepared, varying the compositions of VP and BA, following a simple radical polymerization process using an UV initiator. The samples a good foaming behavior and also excellent flexibility and handle ability, with expansion ratios between 1.53 and 1.72, and cell sizes in the microcellular range (below 5 µm). However, it was observed that the gas distribution and, consequently, the cellular structure inside the polymer foams was highly dependent on the VP and BA proportions, leading to very different thermal conductivity values, even for similar volume gas fraction values. These results were related to the copolymer nanostructuration, which seems to have an influence in the final pore structure, thus opening the possibility of designing microcellular foams with similar macroscopic characteristics but different thermal conductivity values. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45872.

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Nanocellular polymer foams as promising high performance thermal insulation materials

Cited by 134 publications

References 76 publications

Nanoporous polymeric materials: A new class of materials with enhanced properties

Nanoporous polymeric materials: A new class of materials with enhanced properties

Thermoplastic Foams: Processing, Manufacturing, and Characterization

Microcellular polymeric foams based on 1‐vinyl‐2‐pyrrolidone and butyl‐acrylate with tuned thermal conductivity

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