This article proposes a method for determining the acidity coefficient of rock wool based on differential scanning calorimetry.By measuring and calculating the integrated heat flux values of sodium hydroxide gradient concentration standard sam-ples,sodium hydroxide blank samples,and differential thermal gravimetric spectra,the concentration integrated heat flux difference standard working curve is drawn.Mix the sample to be tested,sodium hydroxide,and standard substance to prepare an internal standard sample.Measure the differential thermal gravimetric spectrum of the internal standard sample,calculate the integral heat flux difference between the sample to be tested and the internal standard sample,and calculate the acidity coefficient of the sam-ple to be tested.Compared with the traditional volumetric analysis method,differential scanning calorimetry has the advantages of small error,low cost and high detection efficiency.
关键词
岩棉/酸度系数/差示扫描量热法
Key words
rock wool/acidity coefficient/differential scanning calorimetry
维普
万方数据