1.1本试验方法用于评估玻璃纤维增强热固性树脂的耐化学性，玻璃纤维增强热固性树脂暴露于特定环境中的一侧面板。它考虑了通过层压板壁的冷壁效应和传热的辐射损失。 1.2本试验方法是对实施规程C 581的补充，并不取代其。注1-没有已知的ISO等效于本标准。 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====== 通过本试验方法获得的结果可作为预测特定玻璃纤维增强热固性树脂层压板在单侧暴露于评估的特定环境中的可能性能的指南，但不是唯一依据。未尝试将可能影响玻璃纤维增强树脂结构在化学环境下使用性能的所有因素纳入试验方法。 本试验方法用于测定试验期间和之后试验板和试验介质的物理性能变化- 测试介质中的侧面暴露。变化的测定包括:巴氏硬度、面板外观、试验介质外观、弯曲性能和厚度。

1.1 This test method is intended for use in the evaluation of the chemical resistance of fiberglass-reinforced thermosetting resins that are subjected to one-side panel exposure to specific environments. It takes into consideration the coldwall effects and radiation losses of heat transfer through the laminate wall. 1.2 This test method is supplemental to Practice C 581 and does not supersede it. Note 1 - There is no known ISO equivalent to this standard. This standard does not purport to address all of the safety problems, 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 ====== The results obtained by this test method may serve as a guide in, but not as the sole basis for, predicting the possible performance of the particular glass-fiber-reinforced thermosetting resin laminate in the one-side exposure to the specific environment under evaluation. No attempt has been made to incorporate into the test method all of the factors that may enter into the serviceability of a glass-fiber-reinforced resin structure when subjected to chemical environments. This test method provides for the determination of changes in the physical properties of the test panel and test media during and after the one-side exposure in the test media. Determination of changes include: Barcol hardness, appearance of panel, appearance of test media, flexural properties, and thickness.