ISO 3384-1:2019 硫化橡胶或热塑性橡胶 压缩应力松弛的测定 第1部分：恒温下的测试

标准编号：ISO 3384-1:2019

中文名称：硫化橡胶或热塑性橡胶 压缩应力松弛的测定 第1部分：恒温下的测试

英文名称：Rubber, vulcanized or thermoplastic — Determination of stress relaxation in compression — Part 1: Testing at constant temperature

发布日期：2019-08

标准范围

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。反作用力可通过连续测量系统或不连续测量系统确定。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。这些方法已用于低温测试，但在这些条件下的可靠性尚未得到证明。

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.

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