CAJ | 학술논문

以β-环糊精改性脲醛树脂为壁材，以石蜡为芯材成功制备了球形SiO2/β-环糊精/脲醛树脂微胶囊相变材料。采用FT-IR、SEM、DSC、TGA和XPS等分析手段对该球形微胶囊相变材料进行了表征，详细地讨论了不同SiO2用量对微胶囊的微观形貌、热稳定性以及相变焓的影响。实验结果表明：SiO2/β-环糊精/脲醛树脂相变微胶囊表面Si元素的原子质量分数为19．53％，相变焓值高达144．8 J· g-1，初始质量损失温度提高了约90℃。
이β-배호정개성뇨철수지위벽재，이석사위심재성공제비료구형SiO2/β-배호정/뇨철수지미효낭상변재료。채용FT-IR、SEM、DSC、TGA화XPS등분석수단대해구형미효낭상변재료진행료표정，상세지토론료불동SiO2용량대미효낭적미관형모、열은정성이급상변함적영향。실험결과표명：SiO2/β-배호정/뇨철수지상변미효낭표면Si원소적원자질량분수위19．53％，상변함치고체144．8 J· g-1，초시질량손실온도제고료약90℃。
Microcapsulated phase change materials (microPCMs) were prepared successfully with SiO2 modifiedβ-cyclodextrin/urea-formaldehyde resin as wall material and paraffin as the core material.FTIR, SEM, DSC, TGA and XPS were used to characterize spherical SiO2 modified microPCMs.The effects of SiO2 on surface morphology, thermal stability and the phase change enthalpy of the microPCMs were discussed in details.There is a Si atomic percentage of 19.53%on the sur-face of SiO2/microPCMs with a phase change enthalpy of 144 .8 J/g, and the initial weight loss temperature ( T0 ) increases by about 90℃.