提高相变材料热导率的研究进展  

Research progress on improving the thermal conductivity of phase change materials

作　　者：陈贡 Chen Gong(Maoming Petrochemical Branch Company,SINOPEC,Maoming 523000)

机构地区：[1]中国石油化工股份有限公司茂名分公司,茂名523000

出　　处：《化工新型材料》2024年第S02期11-15,共5页New Chemical Materials

摘　　要：相变材料具有非常强的储热能力,能够在相变过程中保持恒定的温度,这使其在储能系统、加热和冷却系统中具有广泛的应用。但在实际应用过程中,相变材料本身热导率较低,使传热、热储存和释放变缓,影响了其应用前景。因此,如何提高相变储能材料的热导率是目前研究的热点。对提高相变储能材料热导率的各类方法和进展进行了综述,介绍了引入纳米颗粒法、引入金属泡沫法、引入膨胀石墨和对相变材料进行封装法,阐述了各种方法的实用性及存在的问题,并对未来相变储能材料的改性法发展趋势进行了展望。Phase change materials have strong thermal storage capabilities and can maintain a constant temperature during the phase change process,which makes them widely used in energy storage systems,heating and cooling systems.However,in practical applications,the low thermal conductivity of phase change materials results in slow heat transfer and low heat storage and release rate,which affects their practical application.Therefore,how to improve the thermal conductivity of phase change materials causes widespread attention.The various methods and progress of improving the thermal conductivity of phase change materials were reviewed.The introductions of nanoparticles,metal foam and expanded graphite as well as the encapsulation of phase change materials were introduced.It also elaborated the practicality and existing problems of various methods,and looked forward to the development trend of modification methods for phase change materials in the future.

关 键 词：相变材料 热导率 储能 潜热 

分 类 号：TB34[一般工业技术—材料科学与工程]