1.1 本试验方法包括测定Mettler软化点（SP）范围约为95的煤焦油和石油基沥青的表观剪切粘度 °C至120 °C（见试验方法 D3104 )。 1.2 本试验方法仅适用于旋转粘度计。 1.3 由于这种测试方法是基于理论基础的，因此必须严格遵守程序的细节，以符合理论要求。 1.4 以国际单位制表示的数值应视为标准。 1.4.1 例外-- 以传统单位（厘泊）表示的数值仅作为粘度测量的标准。国际单位制单位为帕秒（Pa·s）和一毫帕秒（mPa·s） = 一厘泊（cP）；厘泊的单位是cgs。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 具体危害说明见第节 8. 。 1.6 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》中确立的国际公认的标准化原则制定的。 ===意义和用途====== 5.1 该测试方法可作为确定装运一致性的一个要素。 5.2 粘度对于粘结剂沥青的流变特性也很有价值。粘结剂沥青赋予碳质混合物稠度，并影响其抗变形性。粘结剂沥青粘度对于评估混合物稠度和评估混合物挤出或成型为人工制品的容易程度很重要。

1.1 This test method covers the determination of the apparent shear viscosity of coal-tar and petroleum-based pitches having a Mettler softening point (SP) range of approximately 95 °C to 120 °C (see Test Method D3104 ). 1.2 This test method is applicable only for rotational viscometers. 1.3 Since this test method is based on theoretical grounds, strict adherence to details of the procedure is necessary to comply with the theoretical requirements. 1.4 The values stated in SI units are to be regarded as standard. 1.4.1 Exception— The values stated in conventional units (centipoise) are to be regarded as the standard for viscosity measurement only. The SI unit is the pascal second (Pa·s) and one millipascal second (mPa·s) = one centipoise (cP); centipoise is in cgs units. 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. Specific hazard statements are given in Section 8 . 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 ====== 5.1 This test method is useful as one element in establishing the uniformity of shipments. 5.2 Viscosity is also valuable for rheological characterization of binder pitches. Binder pitch imparts consistency to carbonaceous mixes and affects their resistance to deformation. Binder pitch viscosity is important for assessing mix consistency and for evaluating the ease of mix extrusion or molding into artifacts.