海泡石相变材料的制备及热湿性能的试验研究  

Prepared of Sepiolite Phase Change Material and Study on Their Thermal and Moisture Performance

作　　者：尚建丽[1] 倪勃 

机构地区：[1]西安建筑科技大学材料科学与矿资学院,陕西西安710055

出　　处：《非金属矿》2014年第3期5-7,11,共4页Non-Metallic Mines

基　　金：国家自然科学基金项目(51172116);陕西省重点科技创新团队(2012KTC-11)

摘　　要：以改性海泡石为基体,分别选择水合盐、石蜡、十二醇为相变材料,采用真空注入法,利用正交设计,对不同真空度、不同浸渗时间、不同注入量条件下制备的复合多孔相变材料进行了试验研究。采用差示扫描法(DSC)对海泡石/水合盐,海泡石/石蜡,海泡石/十二醇3种多孔相变材料的相变点和相变焓进行测试;通过饱和盐溶液方法对所制备的复合多孔相变材料的吸放湿能力进行了实验;采用扫描电镜(SEM)对复合多孔相变材料的形貌进行了分析。结果表明:海泡石对3种相变材料的最佳吸附量分别为25.46%,61.66%,65.83%,其中海泡石/石蜡形成的多孔相变材料的热湿综合性能最好,可作为"调节剂"在建筑材料中应用。The composite porous phase change material is prepared with salt hydrate, paraffin and lauryl alcohol as phase change materials under the conditions of different vacuum degree, different infiltration time, different injection volume by Vacuum impregnation method and orthogonal method. The performance of phase transition point and phase enthalpy point of sepiolite/Salt hydrate, sepiolite/paraffin and sepiolite/lauryl alcohol have been tested using differential scanning calorimeter（DSC）; The moisture adsorption and relegation ability of composite porous phase change material have been experimented by the method of Saturated salt solution method; The morphology have been analysed using scanning electron microscope（SEM）. The result is that the best Adsorption capacity of sepiolite and the three materials is 25.46%, 61.66% and 65.83% respectively, sepiolite/paraffin forming porous heat comprehensive performance of phase change materials is best, The sepiolite/paraffin forming of phase change materials can be used as a ＂regulator＂ applied in building materials.

关 键 词：海泡石 真空注入 复合多孔相变材料 调湿调温 

分 类 号：TQ423.2[化学工程] TD985[矿业工程—选矿]