用二甲基亚砜取代法制备了硬脂酸/埃洛石插层复合相变材料.借助于X射线衍射、综合热分析、红外光谱和扫描电子显微镜等方法分析了复合相变材料的插层效果、插层机理及热性能.结果表明:硬脂酸/埃洛石插层复合物中,埃洛石的层间距由0.74 nm增大到3.92 nm,插层率达到了95.4％,埃洛石的内表面羟基与硬脂酸的羰基形成了氢键,其外层硅氧面上的氧与硬脂酸的羟基形成了氢键,复合相变材料的相变温度为50.3℃,相变焓为103.9 J/g,经过200次冷热循环后仍具有较好的兼容性、热稳定性及化学稳定性.
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