1.1 本试验方法涵盖了评估生胶或未硫化橡胶化合物（指定为生胶强度）特性的方法。未固化橡胶的这种特殊强度特性是橡胶制品制造中的一个重要加工性能属性。 1.2 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）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（无论是在化合物中还是在生橡胶状态下）的应力应变特性对于橡胶行业的某些加工操作都很重要。这些未硫化橡胶特性通常被称为“绿色强度” 5.2 生坯强度主要由聚合物的物理和化学特性决定，如分子量、结晶倾向、支化度等。它还与化合物配方有关，特别是填料和增塑剂的含量，以及胶溶剂的存在。绿色强度可以很好地指示加工行为。这是所有以伸长为主的加工操作的一个特别重要的特征。 5.3 生坯强度取决于试样制备、延伸率和试验温度。因此，单个- 点法不能期望在整个加工条件范围内给出生坯强度和加工行为之间的相关性。

1.1 This test method covers methods to evaluate a characteristic of raw rubber or unvulcanized rubber compounds that is designated as green strength. This special strength property for uncured rubbers is an important processing performance attribute in rubber product manufacturing. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 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. 1.4 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 stress-strain properties of unvulcanized rubber (either in a compound or in the raw state) are important to certain processing operations in the rubber industry. These unvulcanized rubber properties are frequently referred to as “green strength.” 5.2 Green strength is determined primarily by the physical and chemical characteristics of polymers, such as molecular weight, tendency to crystallize, degree of branching, and so forth. It is also related to the compound formulation, particularly filler and plasticizer content, and the presence of peptizers. Green strength can be a good indication of processing behavior. It is a particularly important characteristic for all processing operations in which elongation predominates. 5.3 Green strength is dependent on the test piece preparation, rate of extension, and test temperature. Therefore, a single-point method cannot be expected to give correlation between green strength and processing behavior over the whole range of processing conditions.