以癸酸、硬脂酸、肉豆蔻酸和棕榈酸有机相变材料两两混合制成脂肪酸二元混合物为研究对象,选取理论计算公式,对不同配合比的脂肪酸二元混合物的相变温度和相变潜热进行理论预测,并对脂肪酸二元混合物的相变温度和相变潜热进行测试分析研究,将实验值与理论值进行对比,旨在证明所选取的理论计算公式应用于脂肪酸二元混合物的相变温度和相变潜热的预测是可行的。研究结果表明,脂肪酸二元混合物相变温度的实验值与理论值偏差较小,总体偏差均小于4.64℃,实验值与理论值吻合良好;相变潜实验值与理论值对比,除了硬脂酸/棕榈酸混合物个别条件下实验值与理论值偏差稍大为39.28J/g,其他混合物基本偏差不超过11.54J/g;理论计算公式用于脂肪酸二元混合物的相变温度和相变潜热的理论预测是可行的。

The binary mixture of fatty acid was prepared by mixing two kinds of organic acid phase change materials of citric acid,stearic acid,myristic acid and palmitic acid.The theoretical calculation formula was used to select the phase transition temperature of the binary mixture of fatty acids with different mixing ratios.The phase change latent heat was predicted theoretically,and the phase transition temperature and latent heat of phase change of the fatty acid binary mixture were tested and analyzed.The experimental values were compared with the theoretical values to prove that the selected theoretical calculation formula was applied to the fatty acid binary mixture.The prediction of phase transition temperature and latent heat of phase change was feasible.The results shown that the experimental values of the phase transition temperature of the fatty acid binary mixture were less than the theoretical value,and the overall deviation was less than 4.64℃.The experimental value agrees well with the theoretical value.The phase change potential experimental value is compared with the theoretical value except stearic acid.The experimental value of the palmitic acid mixture was slightly different from the theoretical value by 39.28J/g under individual conditions,and the basic deviation of other mixtures was not more than 11.54J/g.The theoretical calculation formula was used theoretical predictions for the phase transition temperature and latent heat of phase change of the fatty acid binary mixture were feasible.