中文摘要：

采用类悬浮聚合法制备了聚苯乙烯/石蜡相变微胶囊,用傅里叶红外光谱仪（FT-IR）、扫描电镜（SEM）、差热扫描量热仪（DSC）及热重分析仪（TG）,对微胶囊的化学结构、表面形貌、潜热值及耐热性进行了分析。结果表明,微胶囊制备过程中壁材不与芯材发生反应,微胶囊的表面有大小不均的微孔;石蜡含量为20%~50%的微胶囊壁材对芯材保护效果较好;当石蜡含量提高到60%时,微胶囊的形貌变得不规则;微胶囊的相变潜热值达到92.4 J/g,具有较好的相变储能效果;TG测试表明微胶囊壁材对芯材有保护作用。

英文摘要：

In this paper,polystyrene/paraffin microcapsules were prepared by suspension-like polymerization. Chemical structure,morphology,latent heat and thermal stability of these microcapsules were investigated by Fourier transform infrared spectrometer （FT-IR）,scanning electron microscopy （SEM）,differential scanning calorimetry （DSC）and thermogrametric analysis （TG）.The results indicated that the shell materials were not reacted with core materials during preparation of microcapsules,and holes with different diameter were discov-ered on the surface of microcapsules.When the content of paraffin was less than 50wt%,microcapsules could be well covered by shell materials.Microcapsules were irregular when the mass ratio of paraffin was more than 60wt%.The highest latent heat of microcapsules investigated by DSC was 92.4 J/g,which was less than the counted value.The prepared polystyrene/paraffin microcapsules could be used as a kind of materials for energy storage.