塔里木大学学报2024，Vol.36Issue(2)：40-46,7.DOI:10.3969/j.issn.1009-0568.2024.02.005
石蜡/枣碳复合相变材料的制备及性能研究
Preparation and properties of paraffin/jujube carbon composite phase change materials
摘要
Abstract
In this study,the freeze-dried powder(FDJ)of waste jujube was used as a carrier for phase change materials.The vacuum impregnation method was used to adsorb paraffin from phase change core materials,and the thermal storage capacity and thermal re-sponse efficiency of the materials were studied.Polyvinyl alcohol aqueous solution was used to reduce the leakage value of the materi-als.The results showed that the phase transition enthalpy of polyvinyl alcohol/jujube carbon paraffin carbon composite phase change material(PVA/CFDJ)was 126.41 J/g,and the thermal conductivity was 0.216 3 W/m·k,which is 60.5%higher than that of pure paraffin.In the storage-discharge heat cycle test,the enthalpy value of the PVA/CFDJ material was only reduced by about 4%after 100 cycles,and the leakage rate was reduced to 3.2%.The PVA/CFDJ composite has the characteristics of high phase transition enthalpy,high thermal conductivity and low leakage rate,which not only improve the added value of biomass materials with regional characteris-tics,but also provide new ideas for novel building energy storage materials.关键词
冻干枣粉/石蜡/相变材料Key words
freeze-dried jujube powder/paraffin/phase change material分类
化学工程引用本文复制引用
时春辉,陆淑芬,胡立兵,陈浩东,吕喜风..石蜡/枣碳复合相变材料的制备及性能研究[J].塔里木大学学报,2024,36(2):40-46,7.基金项目
塔里木大学校长基金硕士项目(TDZKSS202126) （TDZKSS202126）
有机无机复合材料国家重点实验室开放课题项目(202001011) （202001011）
