1.1 本试验方法包括在给定的温度和压力条件下，测定碳纤维环氧预浸料（织物、胶带或片材）的树脂流动量。 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，并且不得将两个系统的值组合使用。 1.2.1 在文本中，英寸磅单位显示在括号中。 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 本国际标准是根据先进复合材料供应商协会（SACMA）推荐的测定预浸渍“B”级材料树脂流量的方法制定的。 1.5 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 本试验方法用于获得碳纤维环氧预浸胶带、织物或片材的树脂流动性。它适用于比较具有相同特性的材料批次，也适用于对不同供应商使用不同树脂纤维组合生产的材料进行比较评估。 5.2 复合材料部件由预浸材料在各种压力和温度下层压而成。生产工艺设计将要求在接近实际加工条件的温度和压力下进行流量测试。测量树脂流量的所有方法都取决于试样的尺寸和几何形状。 该试验方法使用的材料量最小，可得出可重复的结果。 5.2.1 在温度和压力下，单纤维和树脂体系的树脂流量百分比随挥发性含量、环氧树脂的前进程度以及预浸带、织物或片材的树脂含量而变化。 5.2.2 由于挥发性含量和树脂固化（推进）程度随时间变化，该测试方法可用于比较预浸胶带、织物和片材的寿命。 5.3 方法II已被引入以匹配SACMA SRM 22R-94的测试设置和程序:确定预浸渍“B”级材料的树脂流量。这种方法只应用于以与旧SACMA方法一致的方式进行测试。否则，建议使用方法I。

1.1 This test method covers the determination of the amount of resin flow that will take place from carbon fiber-epoxy prepreg material (fabric, tape or sheet) under given conditions of temperature and pressure. 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, 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 the Suppliers of Advanced Composite Materials Association (SACMA) recommended method for Determining the Resin Flow of Preimpregnated “B” Staged Materials. 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 This test method is used to obtain the resin flow of carbon fiber-epoxy prepreg tape, fabric or sheet material. It is suitable for comparing batches of material of supposedly the same characteristics and also for comparative evaluation of materials produced by different vendors using different resin-fiber combinations. 5.2 Composite parts are laminated from prepreg material at various pressures and temperatures. Production process design will require a flow test be run at a temperature and a pressure close to that of the actual processing conditions. All methods of measuring resin flow are dependent on the size and geometry of the specimen. This test method uses the smallest quantity of material that will give reproducible results. 5.2.1 The percent resin flow of a single fiber and resin system at a temperature and pressure varies with the volatile content, degree of advancement of epoxy resin, and with the resin content of the prepreg tape, fabric or sheet. 5.2.2 As volatile content and degree of resin cure (advancement) change with time, this test method is useful in comparing the life of prepreg tape, fabric and sheet. 5.3 Method II has been introduced to match the test setup and procedure of SACMA SRM 22R-94: Determining the Resin Flow of Preimpregnated "B" Staged Material. This method should only be needed to conduct testing in a manner that aligns with the old SACMA method. Otherwise it is recommended to use Method I.