乙醇-正丙醇物系的折光率-温度-组成的关系模型建立

Modelling the Refractive Index- temperature- composition Relationship of Ethanol- propylene Glycol Mixture

通过测定乙醇-正丙醇物系的折光率,探讨建立乙醇-正丙醇物系的乙醇折光率-组成-温度模型,用以快速、准确确定双组分溶液中组分含量。该方法通过测定不同温度、不同组分组成的折光率,用最小二乘法拟合折光率-温度,折光率-组成以及折光率-组成-温度三者间的关系。并且用实验实测折光率值和利用建立的模型计算的理论值对比,经验证表明,结果可靠,模型有效合理,便于在不同温度下准确计算出溶液的组成。

Model of refractive index- composition- temperature relationship of the solution was discussed through the refractive index of Ethanol- propylene glycol mixtures,in order to determine the content in two- component solution quickly and accurately. The method used the least square to fit the relationships between refractive index- temperature,refractive index- composition and refractive index- composition- temperature by measure of different temperatures and refractive index of different components. The results were validated,the model was reasonable effective.