摘要
综述了相变材料的分类及特点、相变材料的定形与封装技术、相变混凝土的配合比设计与性能等3个方面的研究成果,对固-液相变材料的热物理参数、应用现状及多元复合相变体系进行了研究,归纳整理了相变材料的定形与封装技术,重点讨论了多孔基体吸附法,对比分析了相变混凝土的设计原理、力学性能与热物特性变化规律,并对相变混凝土研究方向进行了展望.结果表明:石蜡、脂酸和醇类等3种相变材料更适合于工程建筑环境的应用;相变材料不宜与混凝土集料直接混合;通常采用多孔基体材料吸附液体相变材料来制备相变骨料;相变混凝土的导热系数受相变骨料掺量影响明显,比热容会随掺量增加而提高,强度往往大幅降低.
The classification and characteristics of phase change materials(PCMs),the shape setting and packaging technology of PCMs,and the mix proportion design and performance of phase change concrete were reviewed.The thermophysical parameters,application status and multi-component composite phase change system of solid-liquid PCMs were studied.The shape setting and packaging technology of PCMs was summarized,and the porous matrix adsorption method was mainly discussed.The design principle,mechanical properties and thermal properties of phase change concrete were compared and analyzed,and the research direction of phase change concrete was prospected.The results show that paraffin wax,fatty acid and alcohol are more suitable for the application of engineering construction environment.PCMs are not suitable for direct mixing with concrete aggregates,and porous matrix materials are usually used to absorb liquid PCMs to prepare phase change aggregates.The thermal conductivity of phase change concrete is evidently affected by the amount of phase change aggregate.With the increasing of phase change aggregate content,the specific heat capacity of phase change concrete is often increased,while the strength of phase change concrete is decreased.
作者
周建庭
聂志新
郭增伟
杨娟
郑忠
ZHOU Jianting;NIE Zhixin;GUO Zengwei;YANG Juan;ZHENG Zhong(State Key Laboratory of Mountain Bridge and Tunnel Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Chongqing Municipal Research Institute of Design,Chongqing 400020,China;Sichuan Yakang Highway Limited Liability Company,Yaan,Sichuan 625000,China)
出处
《江苏大学学报（自然科学版）》
EI
CAS
北大核心
2020年第5期588-595,共8页
Journal of Jiangsu University：Natural Science Edition
基金
国家重点研发计划(2017YFC0806007)
国家杰出青年科学基金资助项目(51425801)
云南省科技计划项目(2017IB025)。
关键词
相变混凝土
多孔基体
定形
封装
热物理参数
phase change concrete
porous matrix
setting
encapsulation
thermophysical parameter
