1.1 本试验方法涵盖了通过印刷油墨薄膜的角鲨烯电阻来确定氧化干燥印刷油墨（也称为“单张纸油墨”）的干燥时间的程序。 1.2 本试验方法适用于主要通过氧化干燥的所有糊状油墨，无论其印刷在何种基材上。在适当改变测试液的情况下，也可与通过其他机制（如热固性或紫外线）干燥的糊状油墨一起使用。 1.3 该测试方法使用改进的摩擦测试仪，当实验室使用不太严格的测试程序时，其目的是作为“裁判”程序（见 附录X1 )，无法就其结果达成一致。 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、健康和环境实践，并确定监管限制的适用性。 1.6 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 单张纸油墨的设置或干燥不足，或两者兼而有之，可能会导致堆叠印刷品堵塞，从而导致产品损失。油墨的“凝固”是指印刷油墨膜的粘度迅速上升，有时伴随表面干燥，这会阻止未干燥的油墨膜在光压力下转移到相邻表面。“定形”是油墨-基材组合的特性。干燥不足可能由多种因素引起，但主要原因是:( 1. )油墨中遗漏了金属催干剂，油墨配方不当( 2. )不寻常的油墨-基质相互作用，以及( 3. )使用过酸的润版液。如果测试打印是在标准实验室校样印刷机上进行的，在那里没有使用喷泉溶液，则只能评估前三种可能的原因。如果印刷品是在商业生产的印刷机上进行的，或在约定的油墨中加入润版液的其他可接受方法，则可以确定润版液的效果。通常需要进行多次测试，以找出干燥问题的具体原因。 5.2 本试验方法适用于氧化干燥油墨和基材的大多数组合。由于本试验方法依赖于对干燥程度的视觉评估，因此非常浅的颜色和透明的清漆可能难以量化干燥程度。在这种情况下，供应商和客户应就评估油墨干燥性能的替代方法达成一致。

1.1 This test method covers the procedure for determining the drying time of oxidative-drying printing inks (also referred to as “sheetfed inks”) by squalene resistance of printed ink films. 1.2 This test method is applicable to all paste inks that dry primarily by oxidation regardless of the substrate on which they are printed. With appropriate changes in the test fluid, it may also be used with paste inks that dry by other mechanisms, such as heatset or ultraviolet light. 1.3 This test method utilizes a modified rub tester and is intended to serve as a “referee” procedure when laboratories, using less rigorous test procedures (see Appendix X1 ), cannot agree on their results. 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information 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. 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 Inadequate setting or drying of sheetfed inks, or both, can cause blocking of stacked prints with subsequent loss of product. “Setting” of an ink refers to the rapid rise in viscosity of the printed ink film, sometimes accompanied by surface drying, that prevents transference of the undried ink film to adjacent surfaces under light pressure. “Setting” is a property of the ink-substrate combination. Inadequate drying may be due to several factors, but the primary causes are: ( 1 ) omission of metallic driers from the ink, improper ink formulation ( 2 ) unusual ink-substrate interactions, and ( 3 ) use of a fountain solution that is too acidic. If the test prints are made on a standard laboratory proof press, where there is no application of fountain solution, then only the first three possible causes can be evaluated. If the prints have been made on a commercial production printing press or some other acceptable means of introducing the fountain solution into the ink agreed upon, then the effect of fountain solution can be determined. It will often be necessary to run several tests to isolate the specific cause of a drying problem. 5.2 This test method is suitable for most combinations of oxidative drying inks and substrates. Because this test method relies on a visual assessment of the extent of drying, very light colors and clear varnishes may present difficulties in quantifying the extent of drying. In such cases, the supplier and the customer should agree upon an alternative method of assessing the drying properties of the ink.