1.1 本试验方法规定了在基于氯丁橡胶（CR）的标准试验配方中根据氧化锌样品的比表面积对氧化锌样品进行分级的标准材料、混合程序和试验方法。 1.2 排名基于标准CR配方的固化时间。 1.3 准确的表面积不能通过该测试方法确定，因为除了表面积之外的因素可能在某种程度上影响固化时间（例如酸度、痕量重金属等）。 1.4 以SI单位表示的值应被视为标准。括号中给出的值仅供参考。 1.5 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。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法规限制的适用性。1.6 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》中确立的国际公认的标准化原则制定的。 ======意义和用途====== 4.1 橡胶中氧化锌的表面积可以显著影响固化活化和硫化胶性能。 4.2 氧化锌的比表面积通常通过氮吸收来测量，这需要使用橡胶实验室中通常没有的设备。该测试方法允许根据氧化锌样品相对于已知标准的表面积使用简化程序对氧化锌样品进行排序，所述简化程序涉及混合橡胶化合物并用振荡盘或无转子固化仪测量固化时间。4.3 该测试方法可用于质量控制、研究和开发工作以及不同氧化锌样品的比较。

1.1 This test method specifies the standard materials, mixing procedure, and test method for ranking zinc-oxide samples according to their specific surface area in a standard test formula based on chloroprene rubber (CR). 1.2 The ranking is based on the cure time of the standard CR formulation. 1.3 The accurate surface area cannot be determined by this test method, since factors other than surface area may influence the cure times to some extent (for example acidity, heavy metal traces, etc.). 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.5 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. 1.6 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 ====== 4.1 The surface area of zinc-oxide in rubber can significantly affect cure activation and vulcanizate properties. 4.2 The specific surface area of zinc-oxide is usually measured by nitrogen absorption which requires the use of equipment not normally found in rubber laboratories. This test method allows a ranking of zinc-oxide samples according to their surface areas with respect to a known standard using a simplified procedure involving mixing of rubber compounds and measuring cure times with oscillating disk or rotorless cure meters. 4.3 This test method may be used for quality control, research and development work, and comparison of different zinc-oxide samples.