相变材料的复合及其热性能研究

针对相变材料应用领域中对相变温度和相变焓的具体要求,采用复合的方法重点对相变材料的相变温度进行调节,复合出具有特定相变温度和较高相变焓的相变材料.论述了相变材料的复合原理,研究了4种相变材料的复合及其热性能,通过理论计算与实际测试相比较,筛选出复合物的最佳配比.研究表明:通过相变材料的复合可以调节材料的相变温度至所需要的范围,并具有较高的相变焓,可保持良好吸收或释放能量的能力.

Synthesis of phase change materials and its thermal properties

Aiming at the requirement of phase-transition temperature and enthalpy of phase change for the application of phase change material(PCM),the method of synthesis was employed to adjust the phase-transition temperature,and the phase change materials with special phase-transition temperature and high enthalpy of phase change were prepared.Based on the Schroder theory,four PCMs were selected and synthesized each other,then the thermal properties of the composites were investigated respectively.By contrast with theoretical calculation,the optimal proportion of PCMs in the composite was picked out.It was indicated that after synthesis,the phase-transition temperature and the enthalpy of phase change could be adjusted to the range needed,as a result,the better ability and effect of absorbing and releasing heat energy were obtained.