摘要
为了研究影响气体体积置换法骨架密度测量的相关因素,提出确保高精度测量方法的解决方案,探讨仪器校准、测量程序设置、取样量、样品干燥度、微孔结构样品前处理方式等对测量结果的影响。结果表明:气体体积置换法测量骨架密度标准物质,方法的重复性为0.05%,误差为0.01%,测量精度为0.01%;气体体积置换法骨架密度的测量以惰性气体取代浸润液来测定固体样品所排出的体积,具有更高测量精度。
In order to study the relevant factors that affect the skeleton density measurement of the gas volume displacement method,solutions to ensure high-precision measurement methods were proposed by discussing the influence of instrument calibration,measurement program settings,sampling volume,sample dryness,and microporous structure sample pretreatment methods on the measurement results.The results show that the repeatability of the above method for measuring skeleton density standard materials is 0.05%,the error is 0.01%,and the measurement accuracy is 0.01%.The skeleton density measurement scheme of the gas volume displacement method is characterized by the inert gas replacing the infiltration liquid to determine the discharged volume of the solid sample,which has higher measurement accuracy.
作者
吴立敏
薛民杰
WU Limin;XUE Minjie(Department of Material Science&Quality Inspection,Shanghai Institute of Measurement and Testing Technology,Shanghai 201203,China)
出处
《中国粉体技术》
CAS
CSCD
2021年第5期70-76,共7页
China Powder Science and Technology
基金
国家标准制修订计划项目,编号:20181021-T-469
上海市质量技术监督局科技计划项目,编号:2018-04。
关键词
骨架密度
真密度
气体体积置换法
浸液法
skeleton density
true density
gas volume displacement method
immersion method
作者简介
第一作者:吴立敏(1971-),女,教授级高工,研究方向为材料物性表征及标准化技术。E-mail:wulm@simt.com.cn;通信作者:薛民杰(1980-),男,高级工程师,研究方向为危险化学品分类鉴定技术。E-mail:xuemj@simt.com.cn。
