陶瓷基硝酸盐相变储能复合材料的制备

摘要随着科学技术的发展与生活水平的提高，生活中能源的消耗日益增大，人们对储能材料的依赖也日益地加剧。
本文主要研究了以共晶和非共晶硝酸盐及支撑材料制备微结构复合相变储热材料，并对其性能的检测。本实验首先使用混合烧结法进行了储热材料的制备，对材料进行了XRD表征，检测结果表明烧结前后材料内没有发生化学变化。对材料烧结后的失重比进行了研究，确定了在成型条件下盐材料与支撑材料的配比关系可以达到70%。同时对三种支撑材料制备的储热材料进行了对比，实验表明，在三种支撑材料中，轻质氧化镁的性能较好，优于蛭石和硅藻土，硅藻土性能较差。采用稳态导热系数法测定了材料的导热系数，表明材料中加入10%石墨后，材料导热系数提高了3-4倍左右，在同时不添加导热增强材料时，轻质氧化镁的导热性能最好。DSC测定表明，在非共晶盐样品中，硅藻土作为支撑材料所制备的蓄热材料相变潜热值最大。28961
关键词蓄热材料硝酸盐陶瓷基
毕业论文设计说明书外文摘要
Title The preparation of ceramic matrix nitrate phase change energy storage composite materials
Abstract
With the development of science and technology and the improvement of living standards, energy consumption increasing, the dependence on energy storage material is increasingly intensified.
This paper mainly studied the eutectic and the eutectic nitrate and support material preparation microstructure of composite phase change heat storage material, and its performance testing. This experiment first using mixed sintering process for the preparation of the heat storage material, material for the XRD characterization, before and after the test results show that the sintering materials in chemical changes did not happen. Studied the material after sintering weightlessness than, identified under the condition of forming salt materials and support materials proportioning relations can reach 70%; To three at the same time supporting material preparation compares the heat storage material, through the experimental results show that in the three kinds of support materials, light magnesium oxide with good performance better than that of vermiculite and diatomite, even poor performance of diatomite. Steady state heat conduction coefficient method is used to determine the coefficient of thermal conductivity of materials, suggests that adding 10% graphite material, material coefficient of thermal conductivity by around 3-4 times, at the same time don't add the reinforced material of thermal conductivity. Heat conduction performance of light magnesium oxide is the best.
Keywords Heat storage material nitrate Ceramic base
目   录
1 引言    1
1.1 蓄热材料的分类    1
1.2无机盐/陶瓷基复合相变蓄热材料    3
1.3 相变储热材料的应用    4
1.4 熔融盐/陶瓷相变储热材料显热-潜热储热原理    5
1.5 本课题的研究目的、意义和主要内容    6
2 实验原料及实验方法    7
2.1 实验原料    7
2.2 实验方法    9
3 材料表征    13
3.1 材料物理性质表征    13
3.2 XRD分析    18
3.3 复合相变蓄热材料的导热系数    21
3.4 DSC测定    24
结论    27
致谢    28
参考文献29
1 引言
随着社会工业的高速发展，能源的问题和环境的问题逐渐成为制约社会发展的关键性因素,因而，人们开始关注和利用可再生的能源，相变蓄热材料是解决能源分布不均匀这一问题的重要途径，它的问世间接提高了能源的利用效率，减少了能源的浪费[1]。这几年以来，蓄热材料这一先进课题已经成为国际和国内能源消耗以及材料科学学科所研究的重点和难点所在，。一些发达国家对储能材料的应用已经趋于成熟，这种技术上的成熟主要是基于用于投资储能材料的经费日益提高，才能使其使用性能和技术性能不断提高。陶瓷基硝酸盐相变储能复合材料的制备:http://www.751com.cn/huaxue/lunwen_24019.html