ISO 7231:2023 高聚物多孔弹性材料 恒定压力降时气流值的测定

标准编号：ISO 7231:2023

中文名称：高聚物多孔弹性材料 恒定压力降时气流值的测定

英文名称：Polymeric materials, cellular, flexible — Determination of air flow value at constant pressure-drop

发布日期：2023-08

标准范围

本文件规定了两种确定柔性多孔聚合物材料气流值的方法:—？方法？A，用于常规类型的柔性多孔聚合物材料；—？方法？B，适用于所有类型的柔性多孔聚合物材料，但尤其适用于具有低透气性的材料。对于方法B，本文档中规定了两种方法:—？方法B1:人工测量；—？方法B2:具有自动测量。笔记？1？空气流量值可用于给出制剂和生产变量对蜂窝结构的影响的指示。笔记？2？在该文献中，表述“常规类型的柔性多孔聚合物材料”是指不适合于密封目的的类型。

This document specifies two methods for determining the air flow value of flexible cellular polymeric materials:

—     method A, for conventional types of flexible cellular polymeric material;

—     method B, for all types of flexible cellular polymeric material, but especially for materials with a low permeability to air.

For method B, two methods are specified in this document:

—     method B1: with manual measurement;

—     method B2: with automatic measurement.

NOTE 1       Air flow values can be used to give an indication of the effects of formulation and production variables on the cellular structure.

NOTE 2       In this document, the expression “conventional type of flexible cellular polymeric material” means types which are unsuitable for sealing purposes.

标准预览图