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In-situ swelling behaviour of polymer materials in sub- and supercritical carbon dioxide.

Number: 0023

Author(s) : GERMANUS J., JUNK M.

Summary

Polymers play an important role as sealing materials in refrigeration circuits. Knowledge of the interaction of these materials with refrigerants and refrigerant-oil mixtures is therefore of interest. The swelling behaviour of polymeric materials, especially elastomers is an important parameter for characterizing these materials for use in different applications of refrigeration.
With a new experimental setup it is shown that under the conditions of a CO2-operated refrigeration system, the swelling behaviour of elastomeric materials can be monitored in-situ in different fluids (gases, liquids, and supercritical fluids). The behaviour of different elastomers in CO2 is shown for the temperature range between 25 °C and 80 °C and pressures of up to 90 bar. In addition, experimental results of rapid gas decompression are presented.

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Pages: 8

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Details

  • Original title: In-situ swelling behaviour of polymer materials in sub- and supercritical carbon dioxide.
  • Record ID : 30030982
  • Languages: English
  • Subject: Technology
  • Source: 10th IIR Conference on Ammonia and CO2 Refrigeration Technologies.
  • Publication date: 2023/04/27
  • DOI: http://dx.doi.org/10.18462/iir.nh3-co2.2023.0023

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