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使用差示扫描量热法从吸热温度范围及吸热量大小两个方面研究了单体正构烷烃及其混合物的热性能 ,实验结果表明 ,单体正构烷烃与正构烷烃混合物的热性能明显不同 ,正构烷烃中碳原子数的数目及其分布 ,对相变材料用石蜡的吸热温度范围及吸热量大小影响很大 ,石蜡中正构烷烃种类越少 ,正构烷烃含量越高 ,其热性能越好
The thermal properties of n-alkanes and their mixtures were studied by differential scanning calorimetry (DSC) from the endothermic temperature range and the endothermic amount. The experimental results show that the thermal properties of the mixture of n-alkanes and n-alkanes The performance is obviously different. The number and distribution of carbon atoms in n-paraffins have a great influence on the endothermic temperature range and endothermic amount of paraffin waxes used in phase-change materials. The n-paraffin content in paraffin is less, High, the better the thermal performance