ISO 1133-1:2022 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

标准编号：ISO 1133-1:2022

中文名称：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

英文名称：Plastics — Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics — Part 1: Standard method

发布日期：2022-06

标准范围

本文件规定了在规定温度和负荷条件下测定热塑性材料熔体质量流率（MFR）和熔体体积流率（MVR）的两个程序。程序A是一种质量测量方法。程序B是一种位移测量方法。通常，测量熔体流动速率的试验条件在参考本文件的材料标准中规定。通常用于热塑性塑料的试验条件列于附录A.当比较不同填料含量的材料以及比较填充的未填充热塑性塑料时，MVR特别有用。如果测试温度下的熔体密度已知，则可以通过MVR测量确定MFR，反之亦然。本文件也可能适用于热塑性塑料，其流变行为在测量过程中受到水解（断链）、冷凝和交联等现象的影响，但前提是影响程度有限，且重复性和再现性在可接受范围内。对于在试验过程中显示出显著影响流变行为的材料，本文件不适用。在这种情况下，ISO1133-2适用。注意这些方法中的剪切速率比正常加工条件下使用的剪切速率小得多，因此，通过这些方法获得的各种热塑性塑料的数据可能并不总是与其在加工过程中的行为相关。这两种方法主要用于质量控制。

This document specifies two procedures for the determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastic materials under specified conditions of temperature and load. Procedure A is a mass-measurement method. Procedure B is a displacement-measurement method. Normally, the test conditions for measurement of melt flow rate are specified in the material standard with a reference to this document. The test conditions normally used for thermoplastics are listed in Annex A.The MVR is particularly useful when comparing materials of different filler content and when comparing filled with unfilled thermoplastics. The MFR can be determined from MVR measurements, or vice versa, provided the melt density at the test temperature is known.This document is also possibly applicable to thermoplastics for which the rheological behaviour is affected during the measurement by phenomena such as hydrolysis (chain scission), condensation and cross-linking, but only if the effect is limited in extent and only if the repeatability and reproducibility are within an acceptable range. For materials which show significantly affected rheological behaviour during testing, this document is not appropriate. In such cases, ISO 1133-2 applies.NOTE      The rates of shear in these methods are much smaller than those used under normal conditions of processing, and therefore it is possible that data obtained by these methods for various thermoplastics will not always correlate with their behaviour during processing. Both methods are used primarily in quality control.

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