1.1 这些试验方法包括测定挥发性有机溶剂中树脂溶液的不挥发物含量。 1.2 包括以下两种试验方法: 1.2.1 试验方法A- 适用于非热反应性树脂溶液。这些溶液包含在试验条件下保持稳定并释放溶剂的树脂。例如酯胶和醇酸。 1.2.2 试验方法B- 对于两种类型的解决方案: 1.2.2.1 热反应性树脂溶液。这些溶液包含在热影响下发生冷凝或其他反应的树脂。 例如尿素、三聚氰胺和苯酚的甲醛反应产物。 1.2.2.2 缓慢释放溶剂的溶液。示例包括环氧树脂溶液。 1.3 试验方法A和B主要在干燥时间和使用的烘箱类型上有所不同。 1.4 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 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。 1.6 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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 3.1 树脂溶液的不挥发物含量对于涂料生产商和用户测定可用于成膜的总固体和估计挥发性有机物含量非常有用。

1.1 These test methods cover the determination of nonvolatile content of solutions of resins in volatile organic solvents. 1.2 Two test methods are included as follows: 1.2.1 Test Method A— For solutions of non-heat-reactive resins. These solutions contain resins that remain stable and release the solvent under conditions of the test. Examples are ester gums and alkyds. 1.2.2 Test Method B— For two types of solutions: 1.2.2.1 Solutions of heat-reactive resins. These solutions contain resins that undergo condensation or other reactions under the influence of heat. Examples include the formaldehyde reaction products of urea, melamine, and phenols. 1.2.2.2 Solutions that release solvent slowly. Examples include epoxy resin solutions. 1.3 Test Methods A and B differ primarily in the drying times and types of oven used. 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 ====== 3.1 The nonvolatile content of resin solutions is useful to coatings producers and users for the determination of the total solids available for film formation and for the estimation of the volatile organic content.