1.1 这些试验方法包括通过在膜上的切口上施加和去除压敏胶带来评估相对延展性涂层膜与金属基底的附着力的程序。 1.2 试验方法A主要用于评定涂层和涂层系统的附着力大于125 μm（5密耳），而试验方法B主要用于评定涂层和涂层系统的附着力小于125 μm（5密耳）。试验方法B不适用于厚度大于125 μm（5密耳），除非采用更宽的切割间隔，并且买卖双方之间有明确协议。 如果涂层或涂层系统的厚度尚未预先确定，则应使用标准，如《规程》 D7091型 或相关方在诉讼前商定的其他适当标准。 1.3 这些测试方法用于评估涂层与基材的附着力是否足以满足用户的应用。它们不区分需要更复杂测量方法的更高粘附水平。 1.4 该测试方法的内容与ISO 2409相似（但在技术上不等同）。 1.5 在多涂层系统中，涂层之间可能发生粘附失效，从而无法确定涂层系统与基材的粘附力。 1.6 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。 1.7 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建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.8 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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 为了使涂层实现其保护或装饰基材的功能，涂层必须保持粘附在基材上。由于基材及其表面处理（或缺乏表面处理）对涂层的附着力有很大影响，因此评估涂层与不同基材或表面处理或不同涂层与同一基材的附着力的方法在工业中非常有用。 5.2 该测试方法仅限于评估较低水平的附着力（参见 1.3 ). 该测试方法的实验室内和实验室间精度与涂层基材的其他测试方法相似（例如，测试方法 第2370页 和测试方法 D4060型 )，并且对除了大的粘附力差异之外的所有差异都不敏感。将排名范围限制在0到5之间反映了该测试方法无法在粘附水平之间进行细微区分。用户不得使用中间值对本方法中的附着力试验进行排序。 5.3 温度或相对湿度的极值可能会影响胶带或涂层的附着力。 5.4 由于多种因素，包括涂层组成和拓扑结构的差异，给定的胶带可能无法同样良好地粘附到不同的涂层上。因此，没有一条胶带可能适合测试所有涂层。此外，这些试验方法并未给出粘结断裂所需的力的绝对值，但仅作为满足或超过粘结强度的某个最小值的指标 ( 1. , 2. ) . 6. 5.5 执行这些测试方法的操作员必须经过培训和实践，以获得一致的结果。 通过使用这些方法获得的测试结果的准确性和精度在很大程度上取决于操作员的技能以及操作员以一致方式执行测试的能力。直接反映操作员技能重要性的关键步骤包括胶带移除的角度和速度以及测试样本的视觉评估。不同的运算符可能会获得不同的结果，这是意料之中的 ( 1. , 2. ) . 5.6 该标准要求以尽可能接近180°的角度快速移除胶带的自由端。 当剥离角度和速率发生变化时，由于背衬和粘合剂的流变财产，去除胶带所需的力可能会发生显著变化。拉伸速率和剥离角的变化会影响测试值的巨大差异，必须将其降至最低，以确保再现性 ( 3. ) . 注1: 据报道，这些测试方法用于测量非金属基材（例如木材和塑料）上有机涂层的附着力，但缺乏相关的精度和偏差数据。如果测试非金属基底上的涂层，测试方法A或测试方法B可能更合适，相关方应讨论所采用的方法。 塑料基底的问题在 附录X1 类似的测试方法ISO 2409允许在非金属基材（例如木材和灰泥）上进行测试。缺乏关于后者的精度和偏差数据。试验方法 第359页 是以金属为基底开发的，在缺乏支持精度和偏置数据的情况下，是非常有限的。

1.1 These test methods cover procedures for assessing the adhesion of relatively ductile coating films to metallic substrates by applying and removing pressure-sensitive tape over cuts made in the film. 1.2 Test Method A is primarily intended to rate the adhesion of coatings and coating systems greater than 125 μm (5 mils) in total thickness, while Test Method B is primarily intended to rate the adhesion of coatings and coating systems less than 125 μm (5 mils) in total thickness. Test Method B is not considered suitable for films thicker than 125 μm (5 mils) unless wider spaced cuts are employed and there is an explicit agreement between the purchaser and seller. If the thickness of the coating or coating system has not been predetermined, employ the use of a standard such as Practice D7091 or other appropriate standard agreed upon by interested parties prior to proceeding. 1.3 These test methods are used to evaluate whether the adhesion of a coating to a substrate is adequate for the user’s application. They do not distinguish between higher levels of adhesion for which more sophisticated methods of measurement are required. 1.4 This test method is similar in content (but not technically equivalent) to ISO 2409. 1.5 In multicoat systems adhesion failure may occur between coats so that the adhesion of the coating system to the substrate is not determined. 1.6 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.7 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. 1.8 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 In order for a coating is to fulfill its function of protecting or decorating a substrate, the coating must remain adhered to the substrate. Because the substrate and its surface preparation (or lack thereof) have a drastic effect on the adhesion of coatings, a method to evaluate adhesion of a coating to different substrates or surface treatments, or of different coatings to the same substrate, is of considerable usefulness in the industry. 5.2 This test method is limited to evaluating lower levels of adhesion (see 1.3 ). The intra- and inter-laboratory precision of this test method is similar to other test methods for coated substrates (for example, Test Method D2370 and Test Method D4060 ), and is insensitive to all but large differences in adhesion. Limiting the range of rankings from 0 to 5 reflects the inability of this test method to make fine distinctions between levels of adhesion. Users shall not use intermediate values for ranking adhesion tests within this method. 5.3 Extremes in temperatures or relative humidity may affect the adhesion of the tape or the coating. 5.4 A given tape may not adhere equally well to different coatings due to several factors, including differences in coating composition and topology. As such, no single tape is likely to be suitable for testing all coatings. Furthermore, these test methods do not give an absolute value for the force required for bond rupture, but serves only as an indicator that some minimum value for bond strength was met or exceeded ( 1 , 2 ) . 6 5.5 Operators performing these test methods must be trained and practiced in order to obtain consistent results. The accuracy and precision of the test result obtained by using these methods depends largely upon the skill of the operator and the operator's ability to perform the test in a consistent manner. Key steps that directly reflect the importance of operator skill include the angle and rate of tape removal and the visual assessment of the tested sample. It is not unexpected that different operators might obtain different results ( 1 , 2 ) . 5.6 The standard requires that the free end of the tape be removed rapidly at as close to a 180° angle as possible. When the peel angle and rate vary, the force required to remove the tape can change dramatically due to the rheological properties of the backing and adhesive. Variation in pull rate and peel angle can effect large differences in test values and must be minimized to assure reproducibility ( 3 ) . Note 1: These test methods have been reported being used to measure adhesion of organic coatings on non-metallic substrates (for example, wood and plastic), although related precision and bias data is lacking. If testing coatings on non-metallic substrates, either Test Method A or Test Method B may be more appropriate and the method employed should be discussed by interested parties. Issues with plastic substrates are noted in Appendix X1 . A similar test method, ISO 2409, permits tests on non-metallic substrates (for example, wood and plaster). Precision and bias data on the latter is lacking. Test Method D3359 was developed with metal as the substrate and, in the absence of supporting precision and bias data, is so limited.