研究不同冷却温度下结晶水合盐Na2SO4·10H2O的过冷行为.建立了过冷行为的测试装置,测试并绘制了不同冷却温度下Na2SO4·10H2O添加成核剂前后的步冷曲线,以研究其过冷行为.结果表明,冷却温度在5℃～25℃时过冷度随冷却温度的减小而增大;冷却温度为25℃时Na2SO4·10H2O不发生完全结晶甚至不结晶;最小过冷度发生在冷却温度为20℃时,为5.3℃;最大过冷度发生在冷却温度为5℃时而非0℃,为15.9℃.添加成核剂可降低Na2SO4·10H2O的过冷度,但放热温度变小,且随着冷却温度的减小而降低.
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