【摘要】 运用变颈法解决密度测量过程中的表面张力影响问题,并且在一次测量中同时获得密度和表面张力两个重要的物理化学参数。文中首先推导出变颈法的计算公式,然后通过对乙醇水溶液以及丙三醇两个体系的测量,验证了本方法的正确性。对较高熔体密度的测量也取得了满意的结果。更多还原

【Abstract】 By means of the differential neck method, not only the effect of surface tension on the measurement of density can be solved completely, but the surface tension and density of melt can be simultaneously obtained in one experiment. A formula of this method is given. It is proved to be very correct by applying this method to water-alcohol solution and glycerol. The satisfactory result of the density of melt at higher temperature has been obtained.更多还原