密度天平法测定聚乙烯树脂密度方法的探讨  

Investigation on Density Balance Method Testing the Density of Polyethylene Resin

作　　者：房迎春[1] 仵春祺[1] 李守超[1] 程清[1] 刘新[1] 

机构地区：[1]中国石油独山子石化公司,新疆独山子833600

出　　处：《中国塑料》2013年第3期100-103,共4页China Plastics

摘　　要：通过实验考察了密度天平法测试聚乙烯树脂密度的重复性和准确性,同时对比了密度梯度法测定聚乙烯密度的结果,两种方法测试结果能满足现密度方法要求的准确度和精密度范围,重复测定两结果之差:高密度聚乙烯树脂≤0.0005g/cm3,低密度聚乙烯树脂≤0.0003g/cm3。两种方法可以互替,相互补充,并讨论了影响密度天平法测定因素。The repeatability and accuracy of density balance test of polyethylene resin density was investigated and compared with density gradient method. Both methods met the requirements in accuracy and precision of density determination. The difference between the two methods was ≤0. 0005 g/cma for high density polyethylene and ≤0. 0003 g/cm3 for low density polyethylene. As a result, the two methods could be used alternatively. The factors influencing the density balance method were also discussed.

关 键 词：聚乙烯树脂 密度 密度梯度法 密度天平法 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]