![]() It is found that, the plasterboard containing polymer coated CaCl2♶H2O/EG not only exhibits superior thermal performance for delaying temperature rise over the one with CaCl2♶H2O/EG but also possesses much better thermal reliability. ![]() The applicability of the uncoated and polymer coated CaCl2♶H2O/EG composite PCMs was investigated by directly mixing them with gypsum powder and water, followed by forming into plasterboards. After experiencing 500 heating-cooling cycles, polymer-coated CaCl2♶H2O/EG exhibits the decreases only by 1.68% and 0.52% in the enthalpies of melting and freezing, much less than 25.54% and 30.55% for CaCl2♶H2O/EG, respectively, revealing much enhanced thermal reliability. And the melting and freezing enthalpy values of the obtained polymer-coated CaCl2♶H2O/EG composite PCM are as high as 113.2 and 114.1 J g⁻¹, respectively, and its melting point is quite close to that of CaCl2♶H2O. It is shown that the surfaces of the composite particles have been sealed by the polymer. A novel polymer-coated composite PCM was prepared by mixing the CaCl2♶H2O/EG composite particles with a photo-curing polymer, followed by irradiating the mixture under UV light to make the polymer cured.
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