Microencapsulated phase change materials (MicroPCMs) can be incorporated into a traditional thermal insulation material, such as a foam, to form a new temperature-adaptable material. Polyurea/polyurethane (PU) as the encapsulating shell makes the MicroPCMs more compatible with the polyurethane foam matrix. This study focuses on increasing the thermal storage abilities and reliabilities of the PU-based MicroPCMs as well as improving the temperature-regulating properties of PU foams treated with these materials by incorporating lauryl methacrylate (LMA) and polyols into the MicroPCM particles. Paraffin was successfully microencapsulated by a PU/PLMA hybrid shell via staged polymerization of jointly using interfacial and suspension-like polymerization. PU foams integrating the as-prepared MicroPCMs were produced. The thermal storage abilities as well as working reliabilities of the MicroPCMs were improved when PLMA was introduced in the shells and were further enhanced when they were modified by polyols. The PU foams containing MicroPCMs with polyol-modified hybrid shells have better mechanical properties and temperature-regulating properties than do the foams containing MicroPCMs with unmodified shells. In conclusion, MicroPCMs with polyol-modified PU/PLMA hybrid shells possess promising application prospects for energy efficient buildings and advanced cold-chain logistics systems.

中文翻译：

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微囊化石蜡作为相变材料，具有聚脲/聚氨酯/聚甲基丙烯酸月桂酯混合壳，用于热能存储应用

可以将微囊化的相变材料（MicroPCM）结合到传统的隔热材料（例如泡沫）中，以形成新的温度适应性材料。聚脲/聚氨酯（PU）作为封装壳，使MicroPCM与聚氨酯泡沫基体更加兼容。这项研究的重点是通过将甲基丙烯酸月桂酯（LMA）和多元醇掺入MicroPCM颗粒中来提高基于PU的MicroPCM的储热能力和可靠性，以及改善用这些材料处理过的PU泡沫的温度调节性能。石蜡被PU / PLMA杂化壳通过界面聚合和类悬浮聚合共同进行的阶段聚合成功地微囊化。生产了集成了所制备的MicroPCM的PU泡沫。当将PLMA引入壳中时，MicroPCM的储热能力和工作可靠性得到了改善，而当它们被多元醇改性时，其进一步提高了储藏能力。含有带有多元醇改性杂化壳的MicroPCM的PU泡沫比含有带有未改性壳的MicroPCM的泡沫具有更好的机械性能和温度调节性能。总之，具有多元醇改性的PU / PLMA混合壳的MicroPCMs在节能建筑和先进的冷链物流系统中具有广阔的应用前景。含有带有多元醇改性杂化壳的MicroPCM的PU泡沫比含有带有未改性壳的MicroPCM的泡沫具有更好的机械性能和温度调节性能。总之，具有多元醇改性的PU / PLMA混合壳的MicroPCMs在节能建筑和先进的冷链物流系统中具有广阔的应用前景。含有带有多元醇改性杂化壳的MicroPCM的PU泡沫比含有带有未改性壳的MicroPCM的泡沫具有更好的机械性能和温度调节性能。总之，具有多元醇改性的PU / PLMA混合壳的MicroPCMs在节能建筑和先进的冷链物流系统中具有广阔的应用前景。