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选择了几种脂肪酸,依据二元低共熔原理,制备出适合建筑材料使用的二元有机相变储能材料。通过DSC分析了复合储能材料的相变温度、相变焓等热性能,结果表明:当CA∶LA;CA∶MA;CA∶PA的质量比分别为53.45∶46.55∶60.2∶39.8∶61.6∶38.4时,其相变焓和相变温度分别为CA-LA:120.7J/g;20.82℃,CA-MA:120.3J/g;19.15℃,CA-PA:142.9J/g;22.05℃,适合于民用建筑对相变材料的要求。通过SEM分析检测了珍珠岩吸附相变材料后的表面微观变化,结果表明:有机羧酸均匀吸附在多孔基体中,此种材料可以应用于夹心节能建筑围护结构中。
Several kinds of fatty acids were selected. Based on the binary eutectic principle, a binary organic phase change energy storage material suitable for building materials was prepared. The phase transition temperature, phase transition enthalpy and other thermal properties of composite energy storage materials were analyzed by DSC. The results showed that when the mass ratio of CA: LA, CA: MA and CA: PA were 53.45:46.55:60.2:39.8:61.6: 38.4, the enthalpy of phase transition and the phase transition temperature are respectively CA-LA: 120.7J / g; 20.82 ℃; CA-MA: 120.3J / g; 19.15 ℃; CA-PA: 142.9J / g; Requirements for phase change materials in civil buildings. The microscopic changes of the surface of perlite adsorbed by phase change material were detected by SEM. The results showed that the organic carboxylic acid adsorbed uniformly on the porous matrix could be used in the sandwich structure of energy-saving building.