1.1 本试验方法旨在作为测量液态水的一种方法，该液态水穿过润湿的漆膜，随后被下面的木材或木质基材吸收和保留。描述了使用“Cobb Ring”装置的替代技术。 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 本标准并不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。 1.4 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 该试验方法提供了涂层木材或木质产品吸水率的简单定量测量方法。 5.2 该试验方法已证明适用于厚度约为6 mm至25 毫米( 1. / 4. 英寸到1 在里面 5.3 基材的处理、涂层样品的制备、应用方法、干膜厚度、固化条件和重复样品的数量应由涂层材料的买方和供应商商定。 5.4 这种测量被用作涂层木材或基于木材的产品在外部暴露期间的预期性能的指标或预测因素。它们可用于涂层、基材或两者的开发评估。 它们还可用于涂层木材和木质产品生产的质量控制或监测。

1.1 This test method is intended to serve as a means for measurement of liquid water that passes through a wetted paint film, and which is subsequently absorbed and retained by the underlying wood or wood-based substrate. Alternative techniques for the use of the “Cobb Ring” apparatus are described. 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 ====== 5.1 This test method provides a simple quantitative measure of water absorption by coated wood or wood based products. 5.2 This test method has demonstrated utility for wood or wood based products ranging in thickness from approximately 6 mm to 25 mm ( 1 / 4 in. to 1 in.). 5.3 Conditioning of substrate, coated sample preparation, application method, dry film thickness, cure conditions, and number of replicate specimens should be agreed upon between the purchaser and the supplier of the coating material. 5.4 Such measurements are used as indicators or predictors of the anticipated performance of coated wood or wood based products during exterior exposure. They may be used for developmental evaluation of coatings, substrates, or both. They may also be useful for quality control or monitoring of the production of coated wood and wood based products.