ISO 177:2016 塑料 增塑剂扩散的测定

标准编号：ISO 177:2016

中文名称：塑料 增塑剂扩散的测定

英文名称：Plastics — Determination of migration of plasticizers

发布日期：2016-12

标准范围

ISO 177:2016规定了一种测定增塑剂从塑料中迁移的趋势的方法，当增塑剂与其他材料或其他塑料紧密接触时，塑料中含有增塑剂。注1:可以进行迁移的表面也可以由有机表面涂层组成，如油漆。这个测试是合适的a） 用于评估塑料（尤其是薄膜和片材）在接触与增塑剂有亲和力的材料时失去某些液体成分的趋势，以及b） 用于研究一种或多种浓度的树脂或一系列树脂中所含增塑剂的迁移趋势。在情况b）中，标准化合物是在具有良好特性的树脂的基础上制备的，该树脂具有明确定义的增塑剂与树脂的比率。注2:当吸收性薄片本身含有能够迁移的物质时，可同时从试样迁移到吸收性薄片中，反之亦然。结果还可能受到塑料材料的其他成分（例如低聚物）的迁移或塑料材料或吸收层中除增塑剂以外的任何挥发性成分的损失的影响。

ISO 177:2016 specifies a method for the determination of the tendency of plasticizers to migrate from plastics in which they are contained into other materials or other plastics when they are brought into close contact.NOTE 1 The surfaces into which the migration can proceed can also consist of organic surface coatings, such as lacquers.This test is suitablea) for evaluating the tendency displayed by plastics, particularly in the form of films and sheets, to lose certain of their liquid constituents when they are brought into contact with materials that have an affinity for plasticizers, andb) for studying the tendency to migrate of plasticizers contained in a resin or a series of resins, in one or more concentrations.In case b), standard compounds are prepared on the basis of a well-characterized resin with well-defined ratios of plasticizer to resin.NOTE 2 When the absorbent sheets themselves contain a substance capable of migrating, simultaneous migrations can occur from the test specimens into the absorbent sheets and vice versa.The results may also be affected by the migration of other constituents of the plastic material (for example, oligomers) or by the loss of any volatile constituents other than plasticizers from the plastic material or the absorbent layer.

标准预览图