热塑性塑料熔体流动速率试验方法国家标准精密度研究

摘要

熔体流动速率是大多数热塑性塑料的特征性能和产品出厂检验项目之一,准确测定材料熔体流动速率值具有极其重要的意义.2011年国际标准化组织发布了修订的ISO 1133-1:2011《塑料热塑性塑料熔体质量流动速率(MFR)和熔体体积流动速率(MVR)的测定第1部分:标准方法,新标准与我国现行国家标准GB/T 3682-2000《塑料热塑性塑料熔体质量流动速率和熔体体积流动速率的测定》在技术上存在较大差异,尽快采用新的ISO标准修订我国标准具有非常重要的意义.基于采用ISO 1133-1:2011修订GB/T 3682-2000时进行的试验方法精密度研究,经过统计计算提出了新国标方法精密度数据建议.%Melt flow rate was one of important designatory properties and QC items for most thermoplastic materials.It was of great significance for determinating the value of melt flow rate accurately.There were many technical differences between newly released ISO 1133-1:2011 Plastics-Determination of melt massflow rate and melt volume-flow rate of thermoplastics-Part 1:Standard method and current GB/T 3682-2000 Determination of the melt mass-flow rate and the melt volume-flow rate of thermoplastics.So it was very important to revise GB/T 3682-2000 according to ISO 1133-1:2011 as soon as possible.Based on precision research on test method during revising,the article gave the results of precision on the basis of statistical calculation and suggests for GB revising.