1.1本试验方法包括测量卷曲或未卷曲的单根短纤维在暴露于热空气或接近水沸点时的收缩率。 注1-关于束测试的纤维收缩率，请参阅测试方法D 2102。 1.1.1本试验方法也适用于从丝束或纱线中去除的短纤维和长丝。 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值。两种系统中所述的值都不是精确的等价物；因此，每个系统必须相互独立使用。 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和健康实践，并确定监管限制的适用性。 ====意义和用途====== 本试验方法可用于纺织纤维商业装运的验收试验，但建议谨慎，因为有关- 实验室精度不完整。按照中的指示进行比较测试 5.1.1 可能是可取的。参见第节 13 用于单个实验室信息。 5.1.1如果两个实验室（或更多实验室）的报告测试结果之间存在实际意义的差异，则应进行比较测试，以确定它们之间是否存在统计偏差，并使用适当的统计协助。作为最低要求，使用尽可能同质的样品进行比较试验，从与初始试验期间产生不同结果的样品相同批次的材料中提取，并随机等份分配给每个实验室。应使用未配对数据的统计测试对相关实验室的测试结果进行比较，这是在测试系列之前选择的概率水平。如果发现偏差，必须找到并纠正其原因，或者考虑到已知偏差，必须调整该材料的未来测试结果。 本试验方法适用于所有单纤维。由于单个纤维收缩的可变性，建议对相同材料的大量纤维进行测试，以减少估计收缩的误差。 通过本试验方法获得的结果可用于以下目的: 5.3.1作为预测织物湿加工尺寸稳定性的辅助工具， 5.3.2有助于预测织物在高温加工过程中的尺寸稳定性，以及 5.3.3作为某些类型纤维制造中的控制措施。

1.1 This test method covers the measurement of the shrinkage of crimped or uncrimped single staple fibers when exposed to hot air or to near the boiling point of water. Note 1—For shrinkage of fibers by the bundle test, refer to Test Method D 2102. 1.1.1 This test method is also used on staple fibers and filaments removed from tow or yarn. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in either system are not exact equivalents; therefore, each system must be used independently of the other. 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== This test method may be used for acceptance testing of commercial shipments of textile fibers, however caution is advised because information about between-laboratory precision is incomplete. Comparative tests as directed in 5.1.1 may be advisable. See Section 13 for single-laboratory information. 5.1.1 If there are differences of practical significance between reported test results for two laboratories (or more), comparative test should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, use the samples for such a comparative tests that are as homogeneous as possible, drawn from the same lot of material as the samples that resulted in disparate results during initial testing and randomly assigned in equal numbers to each laboratory. The test results from the laboratories involved should be compared using a statistical test for unpaired data, a probability level chosen prior to the testing series. If a bias is found, either its cause must be found and corrected, or future test results for that material must be adjusted in consideration of the known bias. This test method is applicable to all single fibers. Due to variability of individual fiber shrinkage, it is recommended that a large number of fibers of the same material be tested to reduce errors in estimating shrinkage. Results obtained by this test method can be used for the following purposes: 5.3.1 As an aid in predicting the dimensional stability of fabrics to wet processing, 5.3.2 As an aid in predicting the dimensional stability of fabrics during processing at elevated temperatures, and 5.3.3 As a control measure in the manufacture of some types of fibers.