压敏胶180°剥离强度测试中不确定度评定

Evaluation of Uncertainty in 180 ° Peeling Strength Test of Pressure- Senstive Adhesive

测量不确定度是测量技术中的重要概念,用于表征合理赋予被测量的值的分散性。只要涉及到测量数据的场合,都不避免的涉及到测量不确定度。测量不确定度常由很多分量组成。有些分量可由一系列测量结果的统计分布进行估计,并用试验标准偏差表示。另外一些分量可基于经验或其他信息的概率分布加以估计,也可用标准偏差表述,测量不确定度从词义上理解,意味着对测量结果可信性、有效性的怀疑程度或不肯定程度,是定量说明测量结果的质量的一个参数。实际上由于测量不完善和人们的认识不足,所得的被测量值具有分散性,即每次测得的结果不是同一值,而是以一定的概率分散在某个区域内的许多个值。虽然客观存在的系统误差是一个不变值,但由于我们不能完全认知或掌握,只能认为它是以某种概率分布存在于某个区域内,而这种概率分布本身也具有分散性。测量不确定度就是说明被测量之值分散性的参数,它不说明测量结果是否接近真值。为了表征这种分散性,测量不确定度用标准〔偏〕差表示。在实际使用中,往往希望知道测量结果的置信区间,本文介绍了压敏胶180°剥离强度测量不确定度的评定方法,为其在膜材料领域的使用提供参考。

The measurement uncertainty is an important concept in measurement, used for the characterization of the dispersion of the measured value which are unavoidable as long as data measurement are referred to Measurement uncertainty is often composed of many components. Some components can be estimated through statistical distribution of a series of measurement resuhs, and indicated with test standard deviation. Other cornponents can be estimated based on probability distribution of experience or other information, also can be indicated by standard deviation. Just as the name implies, measurement uncertainty means the doubt or uncertainty degree of the validity or the credibility of the measurement results, a quantitative description of the quality of the measurement results. In practical, a measurement might be imperfect for certain factors, which lead to the measured value with dispersion, i.e. each measured result is not the same value, but with a certain probability dispersion in an range with different values. Although the objective systematic error is a constant value, but because it＇s not fully cognitive or controllable, we can only think that it is with some probability distribution existed in a region, and this probability distribution itself is with dispersion. Measurement uncertainty is a dispersion parameter of the measured values and it does＇ t matter with the closeness to the true value In order to characterize this dispersion, measurement uncertainty was expressed with standard deviation （ partial ）. In actual, the measurement results of the confidence interval are often wanted. Method of measuring uncertainty of 180 degrees peel strength evaluation of the pressure-sensitive adhesive was introduced, which are helpful for its use in the film material