کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1550731 | 998106 | 2012 | 11 صفحه PDF | دانلود رایگان |
A series of phase change temperature adjustable microencapsulated phase change materials (micro-PCMs) were prepared by in situ polymerization method. The micro-PCMs possessed butyl stearate and paraffin as binary core materials, and poly(methyl methacrylate-co-divinylbenzene) (P(MMA-co-DVB)) copolymer as shell material. More importantly, compared with the conventional micro-PCMs, the binary core materials rendered the micro-PCMs a phase change temperature adjustable property by regulating the weight ratio of butyl stearate to paraffin. Scanning electron microscopy (SEM) photographs showed that micro-PCMs had relatively spherical profiles and compact surfaces with diameter ranging from 5–10 μm. Differential scanning calorimetry (DSC) results indicated that the binary core content in micro-PCMs was in a high range of 50–85%. Besides, these as-prepared micro-PCMs showed excellent thermal stability and they decomposed in two steps at considerably high temperatures above 200 °C.
► Novel micro-PCMs with phase change temperature adjustable binary core materials.
► Thermal properties of P(MMA-co-DVB) microcapsules containing butyl stearate and paraffin (BPn).
► Micro-PCMs possessed BPn content in a high range of 50–85%.
► Preparing and optimizing micro-PCMs by regulating the composition of the core and shell materials.
► Micro-PCMs have great potential applications as thermal energy storage materials.
Journal: Solar Energy - Volume 86, Issue 7, July 2012, Pages 2056–2066