丁二烯橡胶门尼黏度标准物质的定值

Setting mooney viscosity value of certified reference material of butadiene rubber

对经过筛选、通过均匀性、稳定性检验后符合标准物质定值的丁二烯橡胶样品,采用多家实验室联合定值。并对各家实验室定值的结果按照标准物质定值数据处理程序,进行了异常数据判断、数据正态分布检验、等精度检验、不确定度评估。丁二烯橡胶门尼黏度标准物质定值各实验室的数据在a=0.05的显著水平时,数据无可疑值、处于正态分布、等精度,定值标准物质的标称值为ML(1+4)100℃(45.6±0.5)。

For the butadiene rubber samples which pass the homogeneity and stability test,several laboratories set the mooney viscosity value together.Via the data processing procedure for the reference materials,the authors conducted abnormal data judgment,normal distribution test,equal precision inspection and uncertainty evaluation.While a equal to 0.05 significant level,the data followed normal distribution,met equal precision requirement and there were no suspicious value.The nominal setting value of the certified reference material was（45.6＋0.5）ML（1＋4） 100℃.