1.1 本试验方法包括使用压制薄膜（程序A）或模塑板（程序B）测定EVA共聚物中乙酸乙烯酯含量的红外程序以及样品厚度的内部校正。 1.2 本试验方法适用于含0.5至55的EVA共聚物的分析 % 乙酸乙烯酯，除非另有规定 1.3 . 1.3 滑石干扰1020厘米 −1 乙酸乙烯酯带。含<5的树脂 % 乙酸乙烯酯和滑石不在本试验方法的范围内。 1.4 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。 1.5 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。 具体的预防说明见第节 8. . 注1: 目前还没有与该标准等效的ISO。 1.6 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 EVA共聚物的性能受共聚物中加入的乙酸乙烯酯的量的影响: 该试验方法提供了一种测定共聚物样品中乙酸乙烯酯含量的方法。 5.2 在进行此测试方法之前，应参考被测试材料的规范。材料规范中涵盖的任何试样制备、处理、尺寸或试验参数，或其组合，应优先于本试验方法中提及的试样。如果没有材料规范，则应用默认条件。

1.1 This test method covers infrared procedures for determining the vinyl acetate content of EVA copolymers using pressed films (Procedure A) or molded plaques (Procedure B) and internal corrections for sample thickness. 1.2 This test method is applicable to the analysis of EVA copolymers containing 0.5 to 55 % vinyl acetate except as specified in 1.3 . 1.3 Talc interferes with the 1020 cm −1 vinyl acetate band. Resins containing <5 % vinyl acetate and talc are excluded from the scope of this test method. 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information purposes only. 1.5 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. Specific precautionary statements are given in Section 8 . Note 1: There is no known ISO equivalent to this standard. 1.6 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 Properties of EVA copolymers are affected by the amount of vinyl acetate incorporated in the copolymer: This test method provides a means to determine the vinyl acetate level in copolymer samples. 5.2 Before proceeding with this test method, reference should be made to the specification of the material being tested. Any test specimen preparation, conditioning, dimensions, or testing parameters, or a combination thereof, covered in the materials specification shall take precedence over those mentioned in this test method. If there are no material specifications, then the default conditions apply.