1.1 本试验方法描述了准确测量乙烯基地板因与粘合剂接触而可能出现的染色程度的程序和仪器。接触粘合剂和不接触粘合剂的乙烯基地板样品之间的测量色差用CIELAB色标系统表示。 1.2 本试验方法提供了乙烯基地板接触粘合剂时可能出现的染色的视觉评估。 1.3 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.4 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。 1.5 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 粘合剂中的某些物质可能会导致乙烯基地板变色。本试验方法提供了一种测量乙烯基因与这些粘合剂接触而可能发生变色的方法。接触或不接触粘合剂的乙烯基地板样本暴露在高温和UVA光下，以加速变色。通过色度计或分光光度计，准确测量暴露样本之间的色差。 因此，使用仪器评估而非个人主观评估来确定粘合剂可能在乙烯基地板中产生的变色量。本试验方法不试图模拟或复制在使用时可能影响乙烯基地板覆盖物的热量和阳光条件。

1.1 This test method describes procedures and instrumentation for accurately measuring the degree of staining that may occur in vinyl flooring as a result of its contact with adhesives. Measured color differences between vinyl flooring specimens contacting the adhesive and not contacting the adhesive are expressed in the CIELAB Color-Scale System. 1.2 This test method provides for visual evaluation of staining which may occur when vinyl flooring contacts adhesives. 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 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. 1.5 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 Certain substances in adhesives may cause discoloration of vinyl flooring. This test method provides a means of measuring the discolorations that may occur in the vinyl as a result of contact with these adhesives. Vinyl flooring specimens, either contacting or not contacting the adhesive, are exposed to heat and UVA light to accelerate discoloration. By means of colorimeter or spectrophotometer, color differences between exposed specimens are accurately measured. Therefore, instrumental evaluation rather than personal subjective evaluation is used to determine the amount of discoloration an adhesive may produce in vinyl flooring. This test method does not attempt to simulate or duplicate the heat and sunlight conditions that may impact vinyl floor coverings while in service.