1.1 本标准提供了测定不饱和聚酯和乙烯基酯树脂的凝胶和放热曲线的标准试验方法。该方法为“标准180°F（82.2°C）放热曲线”的测量提供了指导，并提供了一些特殊树脂测量潜在差异的信息。本试验方法提供了不饱和聚酯和乙烯基酯树脂在与引发剂混合后进行聚合时的反应性信息。 注1: 虽然ISO 584类似，但没有已知的ISO等效于本标准。 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。每个系统中规定的值不一定相等；因此，每个系统应相互独立使用。将两个系统的值结合起来可能会导致不符合标准。 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。 1.4 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 本试验方法用于测量不同批次的不饱和聚酯和乙烯基酯树脂的反应性。本试验提供的信息通常用于评估树脂在高温下的预测性能，作为将树脂转化为成品的过程的一部分。 5.2 该方法用于树脂制造公司的研发，以及将这些聚合物用作生产原料的来料质量控制公司。该方法基于之前在 增强塑料手册 ，“使用块体试验法绘制放热曲线的程序”，由塑料工业协会出版。

1.1 This standard provides a standardized test method for determining the gelation and exotherm curve of unsaturated polyester and vinyl ester resins. This method provides guidance for measurement of the “Standard 180°F (82.2°C) Exotherm Curve” along with information on potential variances of the measurement for some special resins. This test method provides information concerning the reactivity of unsaturated polyester and vinyl ester resins as they go through polymerization after mixing with the initiator. Note 1: There is no known ISO equivalent to this standard, although ISO 584 is similar. 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 equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems has the potential to result in nonconformance with the standard. 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. 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 ====== 5.1 This test method is used to measure the reactivity of different lots of unsaturated polyester and vinyl ester resins. The information provided by this test is often used for assessing the predicted performance of a resin when used in elevated temperature as part of the process used to convert the resin into a finished product. 5.2 The method is used in research and development by companies that manufacture resins and for incoming quality control companies using these polymers as raw materials for production. The method is based on the methods which were previously outlined in the Handbook of Reinforced Plastics , “Procedure for Running Exotherm Curves Using the Block Test Method” published by the Society of the Plastics Industry.