摘要
为了解决有机储能材料中液相流动问题,利用液相插层法制备有机/无机复合储能材料.皂土经过十六烷基三甲基溴化铵(CTAB)改性后,用离子交换法将新戊二醇(NPG)嵌入改性皂土层间,采用小角X射线衍射、红外测试和差热分析表征皂土改性前后层间距、层间结构的变化和制备的复合储能材料的储热性能.实验结果表明:改性皂土的层间距随CTAB量的增加而变宽,新戊二醇/皂土复合储能材料相变温度为56.4℃,相变焓为66.18 J/g.
In order to solve the shortcoming of fluidity of liquid phase in organic energy storage materials, liquid inserting method was used to prepare organic/inorganic phase-changing energy storage composite materials. The bentonite was modified with the cetyl trimethyl ammonium bromide （CTAB） by the intercalation method in liquid phase. Then, the neopentyl glycol （NPG） was inserted into the layers of the modified bentonite by ion-exchanged reaction. The interlayer distance and structure of bentonite and modified bentonite was characterized by SAXRD and FrIR. The heat fusion of the energy storage materials was tested by DSC. Resuits showed that with the increasing of the dosage of CTAB, the interlayer distance widened. The phase change was 66. temperature of the NPG/bentonite composite energy storage material was 56. 4℃, and the heat fusion 18 J/g.
出处
《材料科学与工艺》
EI
CAS
CSCD
北大核心
2007年第3期350-353,共4页
Materials Science and Technology
关键词
皂土
十六烷基三甲基溴化铵
新戊二醇
相变
储能
bentonite
cetyl trimethyl ammonium bromide
neopentyl glycol
phase change
heat storage
