ISO 2440:2019 柔性和刚性蜂窝状聚合材料 加速老化试验

标准编号：ISO 2440:2019

中文名称：柔性和刚性蜂窝状聚合材料 加速老化试验

英文名称：Flexible and rigid cellular polymeric materials — Accelerated ageing tests

发布日期：2019-10

标准范围

本文件规定，对于柔性和刚性多孔聚合物材料，实验室程序旨在模拟自然发生的反应的影响，如氧化或湿度水解。在应用指定处理前后测量相关物理性质。试验条件仅适用于开孔乳胶、开孔和闭孔聚氨酯泡沫以及闭孔聚烯烃泡沫。其他材料的条件将根据需要添加。可以检查老化程序对材料任何物理性能的影响，但通常测试的是伸长率和拉伸性能，或压缩或压痕硬度性能。这些测试不一定与服务行为或暴露在阳光下的老化相关。如果需要，本文件中包含的老化条件可适用于包含上述任何类型多孔材料的复合材料结构。这有助于研究细胞材料与其他基质之间可能的相互作用。复合结构可以是完整的成品，也可以是从成品上切下的具有代表性的小样本。

This document specifies, for flexible and rigid cellular polymeric materials, laboratory procedures which are intended to imitate the effects of naturally occurring reactions such as oxidation or hydrolysis by humidity. The physical properties of interest are measured before and after the application of the specified treatments.Test conditions are only given for open cellular latex, both open- and closed-cell polyurethane foams, and closed-cell polyolefin foams. Conditions for other materials will be added as required.The effect of the ageing procedures on any of the physical properties of the material can be examined, but those normally tested are either the elongation and tensile properties, or the compression or indentation hardness properties.These tests do not necessarily correlate either with service behaviour or with ageing by exposure to light.If desired, the ageing conditions contained in this document can be applied to composite structures containing any of the above types of cellular material. This can be helpful in the investigation of possible interactions between cellular materials and other substrates. Composite constructions can be in the form of complete finished products or representative small specimens cut there-from.

标准预览图