1.1 本试验方法被认为适用于测定各种涂层中不挥发物的体积。建立本试验方法精度的实验室间研究包括一种水还原性外部乳胶漆和三种汽车涂料，其中包括溶剂还原性底漆表面剂、水还原性底漆表面剂、水还原性搪瓷面漆和丙烯酸分散漆面漆。早期的合作研究包括光泽搪瓷、平墙漆、光泽房屋搪瓷、工业烤漆、内部乳胶漆和外部乳胶漆。 该方法不适用于辐射固化材料或着色涂料。 1.2 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。 1.3 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====== 4.1 本试验方法旨在测量从给定体积的液体涂层中获得的干涂层体积。 该值有助于比较不同涂层产品可获得的覆盖率（单位体积指定干膜厚度下覆盖的表面平方英尺）。 4.2 由于各种原因，获得的值可能不等于从配方中原料重量和体积的简单相加中预测的值。一个原因是树脂溶液在溶剂中所占的体积可能等于、大于或小于单独成分的总体积: 树脂溶液中的这种收缩或膨胀受许多因素控制，其中之一是树脂和溶剂的溶解度参数之间扩散的程度和方向。 4.3 颜料颗粒的空间结构和颜料颗粒之间的空间填充粘合剂的程度也会影响干涂料配方的体积。在临界颜料体积浓度以上，由于颜料颗粒之间的未填充空隙增加，干膜的表观体积显著大于理论体积。 在这种情况下，应仔细考虑体积非挥发性物质值的使用，因为体积的增加在很大程度上是由于这些空隙中截留了空气。

1.1 This test method is believed to be applicable to the determination of the volume of nonvolatile matter of a variety of coatings. An interlaboratory study to establish the precision of this test method included a water-reducible exterior latex paint and three automotive coatings that included a solvent-reducible primer surfacer, water reducible primer surfacer, water reducible enamel topcoat, and acrylic dispersion lacquer topcoat. Earlier collaborative studies included a gloss enamel, a flat wall paint, a gloss house enamel, an industrial baking enamel, an interior latex paint, and an exterior latex paint. This method does not apply to radiation curable materials or pigmented coatings. 1.2 The values stated in SI units are to be regarded as the standard. The values given 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 ====== 4.1 This test method is intended to provide a measure of the volume of dry coating obtainable from a given volume of liquid coating. This value is useful for comparing the coverage (square feet of surface covered at a specified dry film thickness per unit volume) obtainable with different coating products. 4.2 For various reasons the value obtained may not be equal to that predicted from simple additivity of the weights and volumes of the raw materials in a formulation. One reason is that the volume occupied by a solution of resin in solvent may be the same, greater, or less than the total volume of the separate ingredients: such contraction or expansion in resin solutions is governed by a number of factors, one of which is the extent and direction of spread between solubility parameters of the resin and solvent. 4.3 The spatial configuration of the pigment particles and the degree to which the spaces between the pigment particles are filled with the binder also affect the volume of a dry coating formulation. Above the critical pigment volume concentration, the apparent volume of the dry film is significantly greater than theoretical due to the increase in unfilled voids between pigment particles. The use of volume nonvolatile matter values in such instances should be carefully considered as the increased volume is largely due to air trapped in these voids.