1.1 该试验方法是对德国标准DIN 53514的改编，是对前“Defo试验”的进一步发展（参见 附录X1 ). 1.2 本试验方法能够测量和表征未硫化原橡胶和橡胶化合物的流变行为（粘度和弹性），与橡胶聚合物的宏观结构（平均分子量、分子量分布、长链支化以及微观和宏观凝胶）有关。 1.3 未硫化橡胶和橡胶化合物的粘度和弹性是通过对圆柱形试件进行压缩/恢复循环来确定的。评估了恒定剪切应力下剪切速率的相关性，并在重复循环试验中确定了材料的疲劳行为。 1.4 还可以评估橡胶和橡胶化合物的非牛顿粘性和弹性行为。 1.5 测试数据的统计评估提供了数据变化的指示，可以用作测试材料均匀性的估计。 1.6 以国际单位表示的数值应视为标准。括号中的值仅供参考。 1.7 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.8 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 未硫化橡胶和橡胶化合物的粘性和弹性行为在橡胶制造中至关重要，因为它影响加工，如混合、压延、挤出和成型。 这些特性的均匀性同样重要，因为波动会导致制造过程的混乱。 5.2 因此，非常需要一种能够测量未硫化橡胶和橡胶化合物的粘度和弹性的测试，包括其均匀性和加工行为的预测（参见实践 第6048页 更多信息）。 5.3 与许多其他流变试验相比，该试验方法在低剪切条件下测量粘度和弹性相关参数，具有很高的识别能力。它可以检测微小的流变差异。实践中对应力松弛试验背后的原理进行了全面讨论 第6048页 . 5.4 该测试方法的测试结果可能有助于预测可加工性，但必须在每种情况下建立与实际制造工艺的相关性，因为条件变化太大。 5.5 该测试方法适用于规范符合性测试、质量控制、裁判目的以及研发工作。

1.1 This test method is an adaptation of the German Standard DIN 53514, a further development of the former “Defo Test” (see Appendix X1 ). 1.2 This test method is capable of measuring and characterizing the rheological behavior (viscosity and elasticity) of unvulcanized raw rubbers and rubber compounds, relating to the macro structure of rubber polymers (average molecular weight, molecular weight distribution, long chain branching, and micro- and macro-gel). 1.3 The viscosity and elasticity of unvulcanized rubbers and rubber compounds are determined by subjecting cylindrical test pieces to a compression/recovery cycle. The dependency on shear rate at constant shear stress is evaluated and the material fatigue behavior is determined in repeat cycle testing. 1.4 The non-Newtonian viscous and elastic behavior of rubbers and rubber compounds can also be evaluated. 1.5 Statistical evaluation of the test data provides an indication of data variation, which may be employed as an estimate of the homogeneity of the material tested. 1.6 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only. 1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 The viscous and elastic behavior of unvulcanized rubbers and rubber compounds is of paramount importance in rubber manufacturing, since it affects processing, such as mixing, calendering, extrusion, and molding. The uniformity of these properties is equally important, as fluctuations will cause upsets in manufacturing processes. 5.2 A test capable of measuring viscosity and elasticity of unvulcanized rubbers and rubber compounds, including their uniformity and prediction of processing behavior, is therefore highly desirable (see Practice D6048 for further information). 5.3 Compared to many other rheological tests, this test method measures viscosity and elasticity related parameters under conditions of low shear and has a high discriminating power. It can detect small rheological differences. A full discussion of the principles behind stress relaxation testing is given in Practice D6048 . 5.4 Test results of this test method may be useful in predicting processability, but correlation with actual manufacturing processes must be established in each individual case, since conditions vary too widely. 5.5 This test method is suitable for specification compliance testing, quality control, referee purposes, and research and development work.