采用石蜡和十二醇配比制备相变温度区较大的二元相变材料,采用步冷实验法测得不同配比的二元共晶体的相变温度区间。以5∶5配比的石蜡与十二醇为研究对象,研究二元相变材料性能。结果表明:二元相变材料在19.67℃时开始熔化,42.42℃时完全熔化结束,熔化潜热为215.4J/g;经红外光谱测试发现没有新物质产生;二元相变材料经过50次和100次循环测试后具有良好的热稳定性。因此,该二元材料在低温相变储能领域有广泛的应用价值。
Binary phase change materials (PCMs) with a larger phase transition temperature range was prepared with the different ratio of paraffin and dodecanol,and the phase transition temperature range of the binary eutectic with different ratios was measured by the step-cooling experiment method.Then,the 5∶5 ratio of paraffin and dodecanol was used to study the performance of the PCMs.It was found that the PCMs began to melt at 19.67℃and completely melted at 42.42℃.The latent heat of melting was 215.4J/g.It was found that no new substances were produced by infrared spectroscopy.The PCMs had good thermal stability after 50 and 100 cycles of testing.Therefore,the PCMs had broad application value in the field of low-temperature phase change energy storage.
[1] Soytas U,Sari R.Energy consumption,economic growth,and carbon emissions:challenges faced by an Eu candidate member[J].Ecological Economics,2009,68(6):1667-1675.
[2] 尹坤,姜蕤.煤炭燃烧的大气污染及相关解决途径分析[J].科技展望,2016,26(3):257.
[3] Waqas A,Din Z U.Phase change material (Pcm) storage for free cooling of buildings-a review[J].Renewable & Sustainable Energy Reviews,2013,18:607-625.
[4] Giro-Paloma J,Martinez M,Cabeza L F,et al.Types,methods,techniques,and applications for microencapsulated phase change materials (Mpcm):a review[J].Renewable & Sustainable Energy Reviews,2016,53:1059-1075.
[5] Nazir H,Batool M,Osorio F J B,et al.Recent developments in phase change materials for energy storage applications:a review[J].International Journal of Heat and Mass Transfer,2019,129:491-523.
[6] 于文艳,王慧娟,田瑞.石蜡-硬脂酸/石墨复合相变材料的储热性能研究[J].功能材料,2019,50(4):4104-4107.
[7] 顾庆军,费华,王林雅,等,赵运超.癸酸-十六醇作为相变储能材料的相变特性[J].化工进展,2019,38(11):5033-5039.
[8] 李玉洋,章学来,徐笑锋.正辛酸-肉豆蔻酸低温相变材料的制备和循环性能[J].化工进展,2018,37(2):689-693.
[9] 蒋达华,廖绍璠,张鑫林,等.十八酸-十四酸二元相变材料的热性能研究[J].化工新型材料,2020,48(9):141-144.
[10] 郭静,相恒学,徐德增,等.硬脂酸-月桂酸二元复合相变材料[J].大连工业大学学报,2012,31(1):60-63.
基金资助
国家自然科学基金(51476149);河南省科技攻关项目(202102210311和212102210231)
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