本文件列出了制造商和实验室用于量化泡沫材料性能的术语和常用测试方法。它还向这些产品的用户或购买者提供信息，以便对提供给他们的各种产品之间的物理特性的相关性进行有教育意义的评估。 本文件总结/提供了以下测试的相关信息: -？聚氨酯泡沫塑料——通常为聚醚（聚醚聚氨酯泡沫塑料）或聚酯基（聚酯聚氨酯泡沫塑料）——由板条（板条泡沫塑料）或模制泡沫塑料工艺生产，以及 -？通过Dunlop工艺或Talalay工艺生产的乳胶泡沫。 本文件中涉及的物理性质如下: a） 韧性， b） 滞后， c） 支撑/下垂系数， d） 密度， e） 硬度， f） 压缩永久变形， g） 抗拉强度， h） 撕裂强度， i） 空气流量/透气性， j） 抗疲劳，以及 k） 微生物抗性。 注？本文件中的试验方法不一定模拟实际使用条件。因此，结果数据的使用仅限于不同泡沫产品之间的广泛比较评估。 本文件仅涉及APTIs中使用的泡沫材料的特性和性能。它不涉及与产品最终临床效率相关的设计、施工方法或其他因素。 本文件未涉及表征任何覆盖物物理性能或任何覆盖物对泡沫物理性能影响的试验方法。

This document lists the terminology and common test methods used by manufacturers and laboratories to quantify the performance of a foam material. It also and gives information to users or buyers of these products to make an educated assessment of the relevance of the physical characteristics between various products offered to them. This document summarizes/gives information about the tests for —？polyurethane foams – typically polyether (polyether polyurethane foam) or polyester based (polyester polyurethane foam) – produced by either slabstock (slabstock foam) or moulded foam process, and —？latex foams produced by either the Dunlop process or Talalay process. The physical properties addressed in this document are a) resilience, b) hysteresis, c) support/SAG factor, d) density, e) hardness, f) compression set, g) tensile strength, h) tear strength, i) air flow/permeability, j) resistance to fatigue, and k) microbial resistance. NOTE？The test methods presented in this document do not necessarily simulate conditions of use in practice. The use of resulting data is therefore restricted to a broad comparative assessment between different foam products. This document addresses only the characterization and performance of foam materials used in APTIs. It does not address the design, construction method or other factors relating to the final clinical efficiency of the product. Test methods for characterizing the physical properties of any coverings, or the effects of any coverings on the physical properties of the foams, are not addressed in this document.