Giant barocaloric effect in commercial polyurethane
| Autor: | Andressa Pintos dos Santos, A.M.G. Carvalho, Christian Caglioni, Jean Rodrigo Bocca, Eduardo Radovanovic, Silvia Luciana Fávaro, C.S. Alves, Wagner André dos Santos Conceição, Jader R. Barbosa, F.C. Colman |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Solid-state cooling
Polyurethane Materials science Polymers and Plastics Hydrostatic pressure 02 engineering and technology 010402 general chemistry 01 natural sciences Refrigerant chemistry.chemical_compound Differential scanning calorimetry Natural rubber Refrigeration Thermal Barocaloric Polymers and polymer manufacture Composite material Adiabatic process chemistry.chemical_classification Organic Chemistry Mechanocaloric Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences TP1080-1185 chemistry visual_art visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | Polymer Testing, Vol 100, Iss, Pp 107251-(2021) |
| ISSN: | 0142-9418 |
| Popis: | Barocaloric effect in polymers is barely recognized and limited to a few reports in the literature. This effect consists of a thermal response of the material when a hydrostatic pressure is applied, allowing its application in the field of solid-state cooling. In this study, the barocaloric effect was investigated for a commercial polyurethane rubber (PU) subjected to three heat treatment temperatures (60, 100, and 115 °C) for 16 h to assess the limiting condition for this application. PU presents giant barocaloric effect, reaching adiabatic temperature change between 13 and 15 °C at a maximum pressure variation of 218 MPa, obtained under direct measurement, reaching a normalized refrigerant capacity of 11.07 kJ kg−1 GPa−1 (ΔTh-c = 25 °C, Δp = 174 MPa). Using the obtained data, it was possible to propose a quadratic model to predict the value of the adiabatic temperature variation as a function of the temperature and pressure applied in the PU. The PU characterization included differential scanning calorimetry and mechanical properties. The results obtained indicate a promising research field for the barocaloric effect in rubber polyurethanes. |
| Databáze: | OpenAIRE |
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