AccuPyc 1330型气体真密度仪测定塑料密度的研究  

STUDY DENSITY OF PLASTICS BY ACCUPYC 1330 PYCNOMETER

作　　者：陈宗宏[1] 孙明星[1] 蒋海宁[1] 

机构地区：[1]上海出入境检验检疫局,上海200135

出　　处：《检验检疫科学》2005年第5期21-22,共2页Inspection and Quarantine Science

摘　　要：〔目的〕为日常检验中塑料粒子及经过热处理后的塑料样条的密度测定提供快速、准确的方法。〔方法〕运用气体在密闭容器中质量守恒定律的原理,用标准体积球的校准来测量样品舱及扩展舱的体积进而测定塑料样品的密度,并与ISO 1183-1987、ASTMD 792-2000测定方法进行比较。〔结果〕本方法与ISO 1183-1987、ASTMD 792-2000方法测定的密度平均值之间的绝对差都小于标准偏差的2倍,说明差异不显著。〔结论〕本方法精确,完全能满足塑料密度测定的一般性要求,且操作简便。A rapid and accurate method was developed to detect the density of plastics particles and heat - treated sheets. In accordance with the conservation of mass of gas in a sealed container, the sample cabin and developing cabin were measured by the calibration of standard ods described in ISO 1183-1987 and ASTM volume ball to determine the density of plastics samples compared with meth- D792 - 2000. The absolute differences between the： average densities by the above methods are 2 times less than the standard deviation. It shows that the differentia is inconspicuous. The method is accurate to satisfy the general requirements of plastics density determining and it is also easy to operate.

关 键 词：塑料 真密度 密度测定 密度仪 塑料 330型 气体 质量守恒定律 标准体积 过热处理 密闭容器 

分 类 号：TQ320.52[化学工程—合成树脂塑料工业] TH715.2[机械工程—测试计量技术及仪器]