ISO 2285:2007 硫化橡胶或热塑性橡胶 恒定伸张度下永久变形及恒定拉伸负荷下永久变形、伸张度和蠕变的测定

标准编号：ISO 2285:2007

中文名称：硫化橡胶或热塑性橡胶 恒定伸张度下永久变形及恒定拉伸负荷下永久变形、伸张度和蠕变的测定

英文名称：Rubber, vulcanized or thermoplastic — Determination of tension set under constant elongation, and of tension set, elongation and creep under constant tensile load

发布日期：2007-07

标准范围

ISO 2285:2007规定了在恒定伸长率或恒定载荷下，在相对较短的拉伸载荷期间和之后，测定硫化橡胶或热塑性橡胶试样尺寸变化的多种方法。恒定伸长率试验旨在测量橡胶在标准实验室温度下拉伸至规定应变后保持其弹性性能的能力，该应变在相同或更高温度下保持规定时间，然后在试验温度或标准实验室温度下释放。恒载试验规定了在标准实验室温度下承受恒载的橡胶的伸长率、蠕变和拉伸永久变形的测定方法。本试验方法旨在测量硬度范围为20 IRHD至94 IRHD的橡胶的弹性性能。蠕变测量不建议用于产品设计或低蠕变材料的评估。对于这些，应参考ISO 8013。注:恒载试验主要用于测量固化状态和薄壁产品的质量控制。固化状态或交联度的增加通常反映在凝结、蠕变或交联的减少上。

ISO 2285:2007 specifies a number of methods of determining the dimensional changes in test pieces of vulcanized or thermoplastic rubber during and after tensile loading for relatively short periods under constant elongation or constant loading.The constant-elongation test is intended to measure the ability of rubbers to retain their elastic properties after extension, at a standard laboratory temperature, to a specified strain which is maintained for a specified time at the same or at a specified higher temperature and then released at the test temperature or at the standard laboratory temperature.The constant-load test specifies a method for the determination of elongation, creep and tension set of rubbers subjected to a constant load at standard laboratory temperature.The test methods are intended to measure the elastic properties of rubber in the hardness range 20 IRHD to 94 IRHD.The creep measurement is not recommended for product design or the evaluation of low-creep materials. For these, reference should be made to ISO 8013.NOTE The constant-load test is primarily intended for the measurement of state of cure and the quality control of thin-walled products. An increase in the state of cure or degree of crosslinking is usually reflected in a decrease in set, creep or crosslinking.

标准预览图