树枝状结晶氯化钠的研究

实验主要是在氯化钠重结晶过程中加入某种添加剂,以改变氯化钠的晶形,变成树枝状.我们通过改变添加剂种类、添加剂质量、蒸发温度水平、饱和溶液温度水平四个条件来进行实验,重点讨论了使氯化钠结晶呈树枝状的添加剂种类及质量范围.通过实验得到使氯化钠结晶呈树枝状的添加剂种类及质量范围.通过实验得到使氯化钠结晶呈树枝状的添加剂有葡萄糖和163BR两种,且得到了一定的蒸发温度条件下这两种添加剂的质量范围,讨论了所形成的树枝状盐的部分性质,如吸湿情况、小晶体比率等.

The Study on Sodium Chloride Dendrite

We take some additive into sodium chloride for being dendrite.We experiment through changing four terms,including the kind and quality of additive,the level of evaporation temperature,the temperature of saturated solution.The kind and quality range of additive which can make the salt come into being dendrite was emphatically discussed.We found that glucose and 163BR can make the salt come into dendrite.Furthermore,we found the quality range of two additives in the condition of determinate evaporation temperature.Some properties of the dendrite were also discussed.For example,the circumstance of moisture absorption and the percentage of small crystals,e.g.