Investigation of different materials for macroencapsulation of salt hydrate phase change materials for building purposes
| Autor: | Matthias Rädle, F.-J. Methner, F. Fasel, P. Schreiner, L. Erlbeck |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Flammable liquid
Materials science 020209 energy Varnish 02 engineering and technology Building and Construction Butyl rubber Ethylene propylene rubber 021001 nanoscience & nanotechnology Phase-change material chemistry.chemical_compound chemistry visual_art 0202 electrical engineering electronic engineering information engineering visual_art.visual_art_medium General Materials Science Graphite Composite material 0210 nano-technology Hydrate Polyvinylidene chloride Civil and Structural Engineering |
| Zdroj: | Construction and Building Materials. 180:512-518 |
| ISSN: | 0950-0618 |
| DOI: | 10.1016/j.conbuildmat.2018.05.204 |
| Popis: | Most of the installed phase change material in buildings is expensive microencapsulated paraffin, which is flammable. Salt hydrates are corrosive and hygroscopic but cheap. A suitable salt hydrate encapsulation material would be of great interest to the construction industry. Thus, macroencapsulation can be a possible and cheap opportunity. Therefore, different methods to macroencapsulate phase change material, consisting of 50 wt% MgCl2 × 6H2O and 50 wt% CaCl2 × 6H2O, were investigated. The investigation results show that the foils with a layer of aluminum or polyvinylidene chloride and liquid spar varnish with additives (mica, graphite, glass flakes) are suitable materials. Furthermore, liquid rubber (Noxyde®), liquid EPDM (ethylene propylene diene (M-class)) and liquid polyvinylidene chloride as well as butyl rubber as extruded tape, malleable modelling clay or injectable mass were tested. These materials are also usable, whereas liquid two-component polysulfide and other foils are not suitable. In conclusion, the supplier can decide to use foils or liquid materials based on the application, the construction material and the price. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect