1.1 本试验方法涵盖了人造纤维和天然纤维作为短纤维、丝束或长丝和纺纱的保水性的测量。其旨在测量仅通过离心力施加的机械方式无法从完全润湿的纤维中去除的水量（参见 3.2 ). 1.2 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。 有关具体的预防说明，请参阅第节 9 . 1.3 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====== 5.1 这种离心后纤维保水性测试的测试方法不推荐用于商业装运的验收测试，因为该测试更适合开发和研究。但是，如果测试用于验收测试，则应按照 5.1.1 建议。 5.1.1 如果因使用测试方法报告的测试结果的差异而产生争议 D2402 对于商业装运的验收测试，买方和供应商应进行比较测试，以确定其实验室之间是否存在统计偏差。作为最低要求，双方应尽可能均匀地从大量相关类型的材料中选取一组试样。 然后，应将试样以相同数量随机分配给每个实验室进行测试。两个实验室的平均结果应使用学生的 t -在设计测试程序时，以双方选择的可接受概率水平测试未配对数据。如果分析表明存在偏差，则必须找到并纠正其原因，或者买方和供应商必须同意在考虑已知偏差的情况下解释未来的测试数据。 5.2 纤维质量保留的水量随着纤维亲水倾向的增加而增加。因此，获得的数据可用于指示以下内容: 5.2.1 不同人群的保水性差异- 人造纤维和天然纤维， 5.2.2 纤维素纤维的交联度， 5.2.3 羊毛和丝绸纤维因碱性加工而受损，以及 5.2.4 防水处理的持久性。

1.1 This test method covers the measurement of water retention of man-made and natural fibers as staple, tow, or filament and spun yarns. It is intended to give a measure of the amount of water which cannot be removed from thoroughly wetted fiber solely by mechanical means as applied by centrifugal force (see 3.2 ). 1.2 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. For specific precautionary statements, see Section 9 . 1.3 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 for testing for water retention of fibers after centrifuging is not recommended for acceptance testing of commercial shipments because the test is more appropriate for development and research. However, if the test is to be used for acceptance testing, comparative tests as described in 5.1.1 are advised. 5.1.1 In the case of a dispute arising from differences in reported test results using Test Method D2402 for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative tests to determine if statistical biases exist between their laboratories. As a minimum, the two parties should take a group of test specimens that are as homogeneous as possible and that are from a lot of material of the type in question. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using the Student's t -test for unpaired data with an acceptable probability level chosen by the two parties while designing the test program. If the analysis shows a bias, its cause must be found and corrected, or the purchaser and supplier must agree to interpret future test data with consideration for the known bias. 5.2 The amount of water retained by a fiber mass increases with an increase in the hydrophilic tendency of the fiber. Thus the data obtained can be used to indicate the following: 5.2.1 Differences in water retention between the various man-made and natural fibers, 5.2.2 Degree of cross-linking in cellulosic fibers, 5.2.3 Damage incurred by wool and silk fibers due to alkaline processing, and 5.2.4 Persistence of water-repellent treatments.