摘要
根据傅立叶变换红外光谱图,对用真空浸渗法制备的多孔介质基复合相变储能材料的相变循环稳定性进行了研究。对其中的有机相变材料月桂酸的结构进行了分析,并与未经相变循环的纯月桂酸及月桂酸盐的红外谱图进行了对比。结果表明,月桂酸相变材料的各个基团和化学键的振动吸收峰仍然存在,与基体材料的化学相容性非常好。
In this paper, the long term stability of porous media based phase-changing composites is investigated by means of fourier transformation infrared spectrum analysis (FTIR). The infrared spectra of lauric acid contained in the phase-changing composites that underwent more than one year of phase-changing cycles were tested and analyzed in comparison with those of sodium laurate and pure lauric acid which did not undergo any phase-changing cycle. The results show that all absorption peaks of the functional groups and chemical bonds of lauric acid still exist, which suggests that the chemical structure of lauric acid did not change after such a long time of phase-changing process in porous media. So it is concluded that the lauric acid, as organic phase-changing material, is chemically compatible with the porous media, and the phase-changing composites have long term chemical stability.
出处
《材料开发与应用》
CAS
2005年第2期13-15,32,共4页
Development and Application of Materials
基金
国家自然科学基金(50208015)
上海市纳米科技专项(0352nm033)
上海市青年科技启明星计划资助(03QF14050)。
关键词
相变材料
多孔介质
红外光谱(FTIR)
化学稳定性
Phase change materials
Porous medium
Fourier transformation infrared spectrum analysis (FTIR)
Chemical stability
