1.1这些试验方法涵盖天然橡胶（NR）中炭黑的评估和生产控制的标准材料、试验配方、混合程序和试验方法。 1.2以国际单位制表示的数值应视为标准。括号中的值仅供参考。 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和健康实践，并确定监管限制的适用性。 ====意义和用途====== 橡胶工业消耗的大部分炭黑用于改善橡胶产品的物理性能、预期寿命和效用。这些试验方法提供了天然橡胶配方和用于评估橡胶产品中使用的炭黑的说明。 这些试验方法可用于根据标准化合物的特定性质表征炭黑。这些测试方法对炭黑生产的质量保证很有用。它们还可用于制备参考化合物、确认橡胶行业中使用的测试操作的日常可靠性、评估实验化合物和生产化合物的质量控制。

1.1 These test methods cover the standard materials, test formulation, mixing procedure, and test methods for the evaluation and production control of carbon blacks in natural rubber (NR). 1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only. 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== The major portion of carbon black consumed by the rubber industry is used to improve the physical properties, life expectancy, and utility of rubber products. These test methods provide a natural rubber formulation and directions for evaluating carbon black intended for use in rubber products. These test methods may be used to characterize carbon black in terms of specific properties of the standard compound. These test methods are useful for the quality assurance of carbon black production. They may also be used for the preparation of reference compounds, to confirm the day-to-day reliability of testing operations used in the rubber industry, for the evaluation of experimental compounds, and quality control of production compounds.