ISO 3146:2022 塑料 用毛细管和偏光显微镜法测定半结晶聚合物的熔融行为（熔融温度或熔融范围）

标准编号：ISO 3146:2022

中文名称：塑料 用毛细管和偏光显微镜法测定半结晶聚合物的熔融行为（熔融温度或熔融范围）

英文名称：Plastics — Determination of melting behaviour (melting temperature or melting range) of semi-crystalline polymers by capillary tube and polarizing-microscope methods

发布日期：2022-03

标准范围

本文件规定了两种评估半结晶聚合物熔融行为的方法。a） 方法a:毛细管这种方法基于聚合物形状的变化。它适用于所有半结晶聚合物及其化合物。注？1？方法A也可用于评估非结晶固体的软化。b） 方法b:偏光显微镜该方法基于聚合物光学性质的变化。它适用于含有双折射晶相的聚合物。它可能不适用于含有颜料和/或其他添加剂的塑料化合物，这些颜料和/或添加剂可能会干扰聚合物结晶区的双折射。注2:ISO 11357-3中描述了另一种适用于半结晶聚合物的方法。

This document specifies two methods for evaluating the melting behaviour of semi-crystalline polymers.a) Method A: Capillary tubeThis method is based on the changes in shape of the polymer. It is applicable to all semi-crystalline polymers and their compounds.NOTE 1   Method A can also be useful for the evaluation of the softening of non-crystalline solids.b) Method B: Polarizing microscopeThis method is based on changes in the optical properties of the polymer. It is applicable to polymers containing a birefringent crystalline phase. It might not be suitable for plastics compounds containing pigments and/or other additives which can interfere with the birefringence of the polymeric crystalline zone.NOTE 2   Another method applicable to semi-crystalline polymers is described in ISO 11357？3.

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