芳纶纸撕裂度测量不确定度分析方法的研究

Study on Uncertainty Analysis Method in Tearing Resistance Measurement of Aramid Paper

关键词:  芳纶纸  撕裂度测量  误差分析  不确定度

Key Words:aramid paper  measurement of tearing resistance  error analysis  uncertainty

摘要:本研究根据纸张撕裂度测量的基本要求，对3 mil（厚度0.088 mm）间位芳纶纸进行横向撕裂度测量，对不确定度分量进行分析量化，给出评定方法与步骤，并对芳纶纸横向撕裂度测量不确定度离散区间进行定量评估。结果表明，按置信区间为95%，同一批次5组杜邦T412-3 mil间位芳纶纸撕裂度分别为（3084±24）、（3161±102）、（3092±92）、（3064±134）和（3145±162）mN，覆盖因子k=2，离散区间位于24~162 mN间。按照标准进行符合规范的测量前提下，纸样均匀性引入的不确定度是芳纶纸撕裂度测量不确定度的主要来源；其次是撕裂度仪的校准引入的不确定度；切口长度误差、裁切误差引入的不确定度影响较小；温湿度、试样层数等因素对测量不确定度影响可以忽略。

Abstract:The transversal tearing resistance for meta-aramid paper of 3 mil （thick ness of 0.088 mm） was tested according to the requirements of the paper tearing resistance test， the uncertainty components were analysed and qualified， the evaluation method and steps were established， and quantitative evaluation of the uncertainty interval for the measurement of transversal tearing resistance of aramid paper. The results showed that for the same batch of Dupont T412-3 mil meta-aramid paper， the 5 sets of data of tearing resistance were （3084±24）， （3161±102）， （3092±92）， （3064±134） and （3145±162） mN， respectively， the coverage factor k=2 with confidence level of approximately 95%， the data dispersion region was 24~162 mN. When measured in accordance with the specification according to the standard， the main influencing factor of uncertainty for tearing resistance measurement of aramid paper was the uniformity of paper samples， the second influencing factor was the calibration error of tearing resistance test machine， the influencing factors of notch length and cutting error were small， the influencing factors of temperature， humidity， layer number， etc. could be neglected.