1.1 本试验方法包括测定与添加剂复合且表观粘度高达200的热熔胶和涂层材料的表观粘度 000毫帕秒（mPa·s）( 附注3 )温度高达175 °C（347 °F）。 注1: 虽然尚未研究精度，但该程序可能适用于高于当前200的粘度 000 mPa·s极限和高于175的温度 °C（347 °F）。本试验方法中描述的设备允许对粘度高达16的材料进行试验 × 10 6. 兆帕·秒，温度高达260℃ °C（500 °F）。 注2: 表观粘度低于15 mPa·s的石油蜡及其混合物的试验方法 D445 尤其适用。 注3: 一帕斯卡秒（Pa·s） = 1000厘泊（cP）；1毫帕秒 = 一厘泊。 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、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 本试验方法区分了具有不同表观粘度的热熔体。据信，由该程序确定的表观粘度与在低剪切速率条件下运行的应用机械的流动性能有关。通过本试验方法确定的表观粘度可能与遇到高剪切速率的最终用途不太相关。 5.2 本程序中所述类型的材料可能是非常非牛顿的，因此，表观粘度将是试验条件下剪切速率的函数。尽管本试验方法中所述的粘度计通常在相对较低的剪切速率条件下工作，但剪切效应可能存在差异，这取决于为试验程序选择的主轴和转速条件。 因此，实验室之间的最大相关性取决于等效剪切条件下的测试。

1.1 This test method covers the determination of the apparent viscosity of hot melt adhesives and coating materials compounded with additives and having apparent viscosities up to 200 000 millipascal second (mPa·s) ( Note 3 ) at temperatures up to 175 °C (347 °F). Note 1: Although precision has not been studied, this procedure may be adaptable to viscosities higher than the present 200 000 mPa·s limit and temperatures above 175 °C (347 °F). Equipment described in this test method permits testing of materials having viscosities as high as 16 × 10 6 mPa·s and provides temperatures up to 260 °C (500 °F). Note 2: For petroleum waxes and their blends having apparent viscosities below 15 mPa·s, Test Method D445 is especially applicable. Note 3: One pascal second (Pa·s) = 1000 centipoise (cP); one millipascal-second = one centipoise. 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, 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 This test method distinguishes between hot melts having different apparent viscosities. It is believed that apparent viscosity determined by this procedure is related to flow performance in application machinery operating under conditions of low shear rate. Apparent viscosity as determined by this test method may not correlate well with end-use applications where high shear rates are encountered. 5.2 Materials of the type described in this procedure may be quite non-Newtonian and as such, the apparent viscosity will be a function of shear rate under the conditions of test. Although the viscometer described in this test method generally operates under conditions of relatively low shear rate, differences in shear effect can exist depending upon the spindle and rotational speed conditions selected for the test program. Maximum correlation between laboratories, therefore, depends upon testing under conditions of equivalent shear.