警告1-使用本文件的人员应熟悉正常的实验室实践。本文件并非旨在解决与其使用相关的所有安全问题（如有）。用户有责任建立适当的安全和健康实践，并确定任何其他限制的适用性。 警告2——本文件中规定的某些程序可能涉及使用或产生可能构成当地环境危害的物质，或产生废物。使用后，应参考有关安全处理和处置的适当文件。本文件规定了两种程序，用于测定硫化橡胶或热塑性橡胶试件施加的反作用力的减少，该试件已压缩至恒定变形，并因此保持在预定的试验温度。 反作用力可以通过连续测量系统或不连续测量系统确定- 测量一。 规定了两种试验方法，方法A和方法B。方法A中的压缩和所有反力测量在试验温度下进行，方法B中的压缩和所有反力测量在标准实验室温度下进行。 方法A和方法B给出的结果不同，方法B中的结果包括材料从试验温度到标准实验室温度的收缩。 本文件规定了两种形式的试件:圆柱形试件和环形试件。只有在尺寸和形状相似的试件上进行比较时，结果才有效。 环形试件的使用尤其适用于液体环境中应力松弛的测定。 本文件仅涉及恒定环境或高温下的测试。未规定在低于标准实验室温度的温度下进行试验。这些方法已经被用于低成本？温度测试，但它们在这些条件下的可靠性尚未得到证明。 交叉引用:ISO 23529:2016ISO 37:2017ISO 18899:2013ISO 188:2011ISO 3601-1:2012ISO 1817ISO 11346ISO 4287ISO/TR 9272ISO 19983购买本文件时可用的所有当前修订版均包含在购买本文件中。

WARNING 1 — Persons using this document should be familiar with normal laboratory practice. This document does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to determine the applicability of any other restrictions. WARNING 2 — Certain procedures specified in this document might involve the use or generation of substances, or the generation of waste, that could constitute a local environmental hazard. Reference should be made to appropriate documentation on safe handling and disposal after use.This document specifies two procedures for determining the decrease in counterforce exerted by a test piece of vulcanized or thermoplastic rubber which has been compressed to a constant deformation and maintained thus at a predetermined test temperature. The counterforce can be determined either by means of a continuous-measurement system or by a discontinuous-measurement one. Two test methods are specified, method A and method B. In method A the compression and all measurements of counterforce are made at test temperature and in method B the compression and all measurements of counterforce are made at standard laboratory temperature. Method A and method B do not give the same results, as in method B the shrinkage of the material from the test temperature to standard laboratory temperature is included in the result. Two forms of test piece are specified in this document: cylindrical test pieces and rings. Comparison of results is valid only when made on test pieces of similar size and shape. The use of ring test pieces is particularly suitable for the determination of stress relaxation in liquid environments. This document deals only with testing at constant ambient or elevated temperature. Testing at temperatures below standard laboratory temperature is not specified. The methods have been used for low?temperature testing, but their reliability under these conditions is not proven.Cross References:ISO 23529:2016ISO 37:2017ISO 18899:2013ISO 188:2011ISO 3601-1:2012ISO 1817ISO 11346ISO 4287ISO/TR 9272ISO 19983All current amendments available at time of purchase are included with the purchase of this document.