1.1 本试验方法包括通过浸入无水丙酮的反应来测定挤出硬质聚氯乙烯（PVC）管和模塑配件的熔融充分性。 1.2 以英寸-磅单位表示的数值应视为标准，除非仪器以国际单位制校准。 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。 具体危害说明见 附件A1 。 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====== 3.1 本试验方法仅适用于区分未充分熔融和充分熔融的PVC。热降解和充分熔融的PVC之间的差异无法通过该测试方法检测到。丙酮浸渍试验不能代替PVC管道或配件的爆裂、冲击或其他物理或化学试验，因此，丙酮浸渍试验不应作为购买PVC管道和配件的唯一试验规范。 该测试方法仅检测未充分熔合，而不能确定PVC管道或配件的整体质量。 3.2 该试验方法可用于确定在其他物理或化学试验中或在使用中，未充分熔合是否导致PVC管或管件失效。 3.3 该试验方法可用于评估在工艺或材料试验中获得的PVC融合的充分性。 3.4 该试验方法确定了单个相对较小的试样上融合的充分性。该测试方法需要使用危险试剂，必须正确处理和处置。因此，这种测试方法可能不需要成本- 有效地用作常规质量控制测试。

1.1 This test method covers the determination of the adequacy of fusion of extruded rigid poly(vinyl chloride) (PVC) pipe and molded fittings as indicated by reaction to immersion in anhydrous acetone. 1.2 The values stated in inch-pound units are to be regarded as the standard except where instruments are calibrated in SI units. 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. Specific hazards statements are given in Annex A1 . 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 ====== 3.1 This test method is applicable only for distinguishing between inadequately fused and adequately fused PVC. The difference between thermally degraded and adequately fused PVC cannot be detected by this test method. Acetone immersion testing is not a substitute for burst, impact, or other physical or chemical tests on PVC pipe or fittings and it, therefore, shall not be used as the only test specification for purchasing of PVC pipe and fittings. This test method only detects inadequate fusion and does not determine the over-all quality of the PVC pipe or fittings. 3.2 This test method is useful in determining whether inadequate fusion contributed to failure of PVC pipe or fittings in other physical or chemical tests, or in service. 3.3 This test method is useful in evaluating the adequacy of PVC fusion obtained in process or materials trials. 3.4 This test method determines adequacy of fusion on a single, relatively small specimen. This test method requires the use of a hazardous reagent which must be properly handled and disposed. Therefore, this test method may not be cost-effective to employ as a routine quality control test.