1.1 这些测试方法描述了毛细管流变仪如何用于测量橡胶（生橡胶或复合橡胶）的流变特性。介绍了两种方法:方法A使用活塞式毛细管流变仪，方法B使用螺杆挤出式毛细管流变仪。这两种方法有重要的区别，如 7 – 10 和 11 – 14 分别地 1.2 这些试验方法包括使用毛细管流变仪测量热塑性弹性体、未硫化橡胶和橡胶化合物的流动特性。 这些材料特性与工厂加工有关。 1.3 由于活塞式毛细管流变仪仅向样品施加少量的剪切能，因此这些测量结果与取样时化合物的状态直接相关。活塞式毛细管流变仪的测量通常与螺杆挤出式流变仪的测量不同，螺杆挤出式粘度计在流变学测量之前提供剪切能。 1.4 试验方法中描述了塑料的毛细管流变仪测量 第835页 . 1.5 以国际单位制表示的值应视为标准值。括号中给出的值仅供参考。 1.6 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。 1.7 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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 4.1 这些试验方法可用于表征未硫化橡胶或未硫化橡胶的粘度或流动阻力。 4.2 这些测试方法产生的数据被发现对质量控制测试和化合物开发都有用。然而，并不意味着与工厂条件直接相关。 4.3 由于流动参数对分子量和分子量分布敏感，流动性能数据允许对进入的原橡胶进行质量控制。 因此，这些测试方法可以区分批次之间的差异。 4.4 未硫化状态下的混合橡胶批料的剪切粘度或流动粘度不仅对原始聚合物分子性质敏感，而且还受填料类型和用量、增塑剂或软化剂水平、共聚物共混物的数量和类型以及其他混合材料的影响。这些测试方法可以作为质量控制工具，用于来料定制混合化合物或生产混合的内部质量保证检查。 通过测量新聚合物、树脂、柔软剂等对橡胶混合物的流变效应，这些测试方法可用于新产品的研究和开发。

1.1 These test methods describe how capillary rheometry may be used to measure the rheological characteristics of rubber (raw or compounded). Two methods are addressed: Method A—using a piston type capillary rheometer, and Method B—using a screw extrusion type capillary rheometer. The two methods have important differences, as outlined in 7 – 10 and 11 – 14 , respectively. 1.2 These test methods cover the use of a capillary rheometer for the measurement of the flow properties of thermoplastic elastomers, unvulcanized rubber, and rubber compounds. These material properties are related to factory processing. 1.3 Since piston type capillary rheometers impart only a small amount of shearing energy to the sample, these measurements directly relate to the state of the compound at the time of sampling. Piston type capillary rheometer measurements will usually differ from measurements with a screw extrusion type rheometer, which imparts shearing energy just before the rheological measurement. 1.4 Capillary rheometer measurements for plastics are described in Test Method D3835 . 1.5 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.6 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. 1.7 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 These test methods are useful for characterization of raw, or compounded, unvulcanized rubber in terms of viscosity, or resistance to flow. 4.2 The data produced by these test methods have been found useful for both quality control tests and compound development. However, direct correlation with factory conditions is not implied. 4.3 Flow performance data permits quality control of incoming raw rubbers because the flow parameters are sensitive to molecular weight and to molecular weight distribution. Therefore, these test methods may distinguish differences between lots. 4.4 The shear viscosity or flow viscosity of compounded rubber batches in the raw (unvulcanized) state will not only be sensitive to the raw polymer molecular properties, but will also be affected by type and amount of filler, plasticizer or softener levels, amount and type of copolymer blend, and other compounding materials. These test methods can serve as a quality control tool for either incoming custom mixed compounds or for in-house quality assurance checks on production mixing. These test methods are useful for research and development of new products by measuring the rheological effect on a rubber compound of new polymers, resins, softeners, etc.