Using Supercritical Carbon Dioxide for Physical Foaming of Advanced Polymer Materials

Wolff F, Zirkel L, Sarah B, Jakob M, Verena M, Nachtrab F, Ceron Nicolat B, Fey T, Münstädt H (2011)


Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2011

Journal

Publisher: Carl Hanser Verlag

Book Volume: 26

Pages Range: 437-443

DOI: 10.3139/217.2469

Abstract

Foams from high performance polymers find more and more interest. The processes to generate them can be difficult, however. It is shown how physical foaming with CO2 can be used as a first step to assess the potentials of such materials. For investigations of such kind an autoclave on a laboratory scale which allows pressure variations up to 300 bars and temperatures up to 300 degrees C was set up. The samples are saturated with supercritical carbon dioxide (s.c. CO2) which acts as a foaming agent. Depending on the process and material parameters different foam characteristics and cell morphologies were obtained and characterised. The potential of this method is demonstrated for two different classes of advanced polymer materials, thermoplastic fluoropolymers (PEP), and a silicone resin. In the case of the fluoropolymer, previously prepared films were foamed and the effects of various process parameters on the foam characteristics were investigated. Besides the general potential of foams from fluoropolymers, they are candidates for polymeric piezoelectric materials with a relatively high temperature stability. Silicone polymers possess some properties superior to common organic polymers. First results on the foaming behaviour of a silicone resin are presented.

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APA:

Wolff, F., Zirkel, L., Sarah, B., Jakob, M., Verena, M., Nachtrab, F.,... Münstädt, H. (2011). Using Supercritical Carbon Dioxide for Physical Foaming of Advanced Polymer Materials. International Polymer Processing, 26, 437-443. https://doi.org/10.3139/217.2469

MLA:

Wolff, Friederich, et al. "Using Supercritical Carbon Dioxide for Physical Foaming of Advanced Polymer Materials." International Polymer Processing 26 (2011): 437-443.

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