化工进展2024，Vol.43Issue(6)：3256-3267,12.DOI:10.16085/j.issn.1000-6613.2023-0893
月桂酸基二元低共融储能材料的制备及热性能
Preparation and thermal properties of lauric acid-based binary low compatible energy storage materials
摘要
Abstract
The latent heat energy storage technology of phase change materials is utilized in the field of energy saving in buildings.Based on lauric acid(LA),paraffin wax(PW)and capric acid(CA)were introduced to investigate the thermal properties,stability and reliability of lauric acid-based binary phase change materials.The phase transition temperatures of LA-PW and LA-CA were obtained from theoretical predictions to be 35.75℃and 18.11℃,respectively.The optimal ratio of LA-PW was obtained experimentally as 76∶24 and the optimal ratio of LA-CA as 30∶70.The phase transition temperatures of LA-PW and LA-CA were 37.45℃and 17.82℃,respectively,which differed from the theoretical values by 1.70℃and 0.29℃,and the latent heats of phase transition were 186.9J/g and 129.16J/g,respectively.The FTIR and XRD showed that LA-PW and LA-CA did not produce any new material and were purely physically bonded withgood thermal storage performance during the heat storage and exothermic experiments.Thermogravimetric analysis showed that no pyrolysis occurred in LA-PW and LA-CA within 100℃,showing good thermal reliability of them.The maximum variation rates of phase change temperature of LA-PW and LA-CA during 500 cold and hot cycles were 9.5%and 2.15%respectively,and the maximum variation rates of latent heat of phase change were 3.8%and 3.27%respectively,demonstrating LA-PW and LA-CA hadgood stability and heat storage performance,and were suitable for energy-saving research applications in the building industry.关键词
脂肪酸/复合相变材料/潜热储能/热可靠性/建筑节能Key words
fatty acids/composite phase change materials/latent heat energy storage/thermal reliability/building energy efficiency分类
能源科技引用本文复制引用
梁西妹,费华,李元林,雍帆,郭梦倩,周嘉宏..月桂酸基二元低共融储能材料的制备及热性能[J].化工进展,2024,43(6):3256-3267,12.基金项目
国家自然科学基金(51966004) （51966004）
江西省自然科学基金(20212BAB204029) （20212BAB204029）
江西省教育基金(GJJ2200841,GJJ190447) （GJJ2200841,GJJ190447）
江西理工大学清江青年优秀人才项目(JXUSTQJYX2017003). （JXUSTQJYX2017003）
