1.1 该试验方法确定复合预浸料坯（预浸料）材料的平面内渗透性，作为浸渍水平的衡量标准。允许的预浸材料包括用碳、玻璃、芳族聚酰胺、热塑性塑料和其他用热固性或热塑性基体树脂浸渍的纤维增强的材料，从而形成单层片材。加强件可以是单向织物或编织织物。 1.2 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值不一定是完全相等的；因此，为了确保符合标准，每个系统应独立使用，并且两个系统的值不得组合。 1.2.1 在文本中，英寸- 括号中显示了磅单位。 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 众所周知，预浸料浸渍水平影响处理特性、粘性和悬垂性以及最终零件质量。 树脂浸渍水平是在加工过程中从叠层中去除空气和挥发物的能力的主要因素。部分浸渍的预浸料坯材料在一些应用中可以提供更高质量、更低空隙率的复合材料部件，并且由于希望使用仅真空袋工艺从高压釜中固化，因此变得越来越普遍。该测试可以识别材料浸渍水平的微小变化，这有助于确定生产过程或运输和处理程序。渗透性值可用于指定预浸材料的验收要求范围，从而使预浸材料制造商和用户对生产可重复和高质量零件的能力更有信心。该试验直接确定了在试验过程中未施加任何压实压力的情况下试验材料的实际气流倾向。 5.2 应报告影响测试预浸材料渗透性的因素，包括:预浸材料、方向、辊上位置、宽度、长度、厚度和实际大气压力。

1.1 This test method determines the in-plane permeability of composite prepreg (pre-impregnated) materials as a measure of level of impregnation. Permissible prepreg materials include those reinforced with carbon, glass, aramid, thermoplastic and other fibers impregnated with a thermoset or thermoplastic matrix resin, creating a single ply sheet material. The reinforcements may be unidirectional or woven fabrics. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.2.1 Within the text, the inch-pound units are shown in brackets. 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 It is well known that the prepreg impregnation level affects handling characteristics, tack and drape, and final part quality. Resin impregnation level is the dominant factor in the ability of removing air and volatiles from the layup during processing. Partially impregnated prepreg materials can in some applications provide higher quality, lower void content composite parts, and are becoming increasingly more common due to the desire to cure out-of-autoclave, using vacuum bag-only processes. This test can identify small changes in the material impregnation level which can assist in definition of production processes or shipping and handling procedures. The value of permeability can be used for specifying ranges as acceptance requirements for prepreg materials, thus enabling the prepreg manufacturer and user greater confidence in the ability to produce repeatable and high quality parts. This test directly determines the actual air flow propensity of the material tested without any applied compaction pressure during testing. 5.2 Factors that influence the permeability of the tested prepreg material shall be reported including: prepreg material, orientation, location on roll, width, length, thickness, and actual atmospheric pressure.