【摘要】 本文介绍了一种在室温下（～25℃）测定固体物料密度的实验装置。在真空中(～10^-5乇),用氦法测定固相密度（或真密度）,并在同一仪器中用汞充填法测定颗粒密度（或表观密度）。如果固体物料是多孔性的,则可算得孔隙体积或孔隙率。测定结果表明真密度与某些报道的数值一致。所有数据相对平均偏差≤±0.5％。更多还原

【Abstract】 An apparatus is described, which enables the densities of solids to be determined at ambient temperature(25℃). The solid phase density (or true density)is measured by the helium method, dsing a high vacuum system (10-~5torr). The particle density(or apparent density) is determined by mercury displacement with the same instrument. For porous materials, the porosity can be calculated from the experimentally determined values of pore volume. Results of the experiments on some solid materials indicate that the solid phase densities are in agreement with reported values, For all data the relative average deviation is not greater than±0.5%.更多还原