1.1 本试验方法涵盖了与橡胶化合物粘合的加强线附着力的测量。本试验方法适用于天然纤维和人造纤维（钢除外）的纺织帘线结构。关于钢制轮胎帘线的附着力测试，请参阅测试方法 D2229 . 1.2 本试验方法主要用于评估轮胎帘线，使用合适的轮胎帘线粘合剂和合适的橡胶化合物。该测试方法也用于评估( 1. )轮胎帘线粘合剂，以及( 2. )使用一种一致形式的轮胎帘线和一种一致的橡胶化合物在帘线上的粘合反应过程。 本试验方法可用于评估工业软管和皮带产品以及其他帘线增强橡胶产品中的帘线。 1.3 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可能不是精确的等效值；因此，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准。 1.4 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。 1.5 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 试验方法 D4776 为了确定增强软线与橡胶化合物的H试验附着力，可将其用于增强软线商业装运的验收试验，但由于实验室间精度的信息不完整，因此建议谨慎。 按照中的指示进行比较测试 5.1.1 可能是可取的。 5.1.1 如果因使用测试方法时报告的测试结果的差异而产生争议 D4776 对于商业装运的验收测试，买方和供应商应进行比较测试，以确定其实验室之间是否存在统计偏差。建议为调查偏差提供称职的统计协助。作为最低要求，双方应尽可能均匀地从大量相关类型的材料中选取一组试样。然后，应将试样以相同数量随机分配给每个实验室进行测试。 两个实验室的平均结果应使用学生的 t -测试未配对数据和双方在测试开始前选择的可接受概率水平。如果发现偏差，必须找到并纠正其原因，或者买方和供应商必须同意根据已知偏差解释未来的测试结果。 5.2 本试验方法用于测量从橡胶化合物试块中拔出绳索所需的力。 5.3 本试验方法旨在测试与橡胶化合物粘合的纺织品的附着力。可能导致本试验方法结果差异的变量包括粘合剂类型、粘合剂应用程序、粘合剂固化、纤维类型、绳索结构、橡胶类型、橡胶固化和橡胶厚度。 5.3.1 臭氧和大气湿度对粘合剂与橡胶粘合能力的有害影响，需要在嵌入之前对电线进行精心保护。 5.4 表征可接受附着力的预期值范围可根据经验在任何帘线橡胶组合中确定。因此，买方通常使用供应商的标准橡胶化合物或买方的橡胶化合物在供应商的实验室或买方的实验室中确定供应商要获得的最低粘附水平。

1.1 This test method covers the measurement of adhesion of reinforcing cords that are bonded to rubber compounds. This test method is applicable to textile cord structures from both natural and manmade fibers, other than steel. For adhesion testing of steel tire cords, refer to Test Method D2229 . 1.2 This test method is primarily used to evaluate tire cords, using a suitable tire cord adhesive and a suitable rubber compound. This test method is also used to evaluate ( 1 ) tire cord adhesives, and ( 2 ) the process of adhesive reaction on the cord using one consistent form of tire cord and one consistent rubber compound. This test method may be used to evaluate cords in industrial hose and belting products and other cord reinforced rubber products. 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.4 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. 1.5 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 Test Method D4776 for the determination of the H-test adhesion of reinforcing cords to rubber compounds may be used for the acceptance testing of commercial shipments of reinforcing cords but caution is advised since information about between-laboratory precision is incomplete. Comparative tests as directed in 5.1.1 may be advisable. 5.1.1 In cases of dispute arising from the differences in reported test results when using Test Method D4776 for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative tests to determine if there is statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens which are as homogeneous as possible and which are from a lot of material of the type in question. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using Student's t -test for unpaired data and an acceptable probability level chosen by the two parties before testing begins. If a bias is found, either its cause must be found and corrected or the purchaser and the supplier must agree to interpret future test results in light of the known bias. 5.2 This test method is used to measure the force required to extract the cord from a rubber compound test block. 5.3 This test method is designed to test the adhesion of textiles that are bonded to rubber compounds. Variables that may contribute to differences in results of this test method include adhesive type, adhesive application procedure, adhesive cure, fiber type, construction of cords, rubber type, rubber cure, and rubber thickness. 5.3.1 The deleterious effect of ozone in combination with atmospheric moisture on the ability of adhesives to bond with rubber requires assiduous protection of cords prior to embedment. 5.4 The expected range of values which characterize acceptable adhesion can be determined in any cord-rubber combination with experience. For this reason, the purchaser normally establishes a minimum level of adhesion to be obtained by the supplier in either the supplier's laboratory or the purchaser's laboratory using either the supplier's standard rubber compound or the purchaser's rubber compound.