1.1 这些试验方法包括高性能聚乙烯薄膜的拉伸试验。这些方法仅包括测试程序，不包括规范或公差。 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是精确的等价物；因此，为确保符合本标准，每个系统应独立使用，且两个系统的值不得组合。 1.3 本标准包括以下试验方法: 部分 破断力 11 断裂韧性 12 断裂韧性 17 断裂伸长率 13 规定伸长率下的力（FASE） 14 线密度 10 模数 15 从工作到休息 16 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 测试高性能聚乙烯薄膜时获得的拉伸性能水平取决于试样的年龄和历史以及测试期间使用的特定条件。这些条件包括拉伸速率、夹具类型、试样标距、大气温度和湿度、穿过试样的气流速率以及试样的温度和含水量。因此，精确规定了测试条件，以获得特定样品的可再现测试结果。 5.2 破断力 在设计各种类型的产品时，用于工程计算。 当需要比较不同尺寸或不同类型薄膜的固有强度特性时，断裂韧性非常有用，因为对于给定类型的薄膜，断裂力与线密度近似成比例。 5.3 伸长率 在加固产品的设计和工程中考虑了薄膜的厚度，因为它影响成品的均匀性及其在使用过程中的尺寸稳定性。 5.4 这个 法斯 用于在加工的各个阶段监测材料特性的变化。 5.5 模数 是当施加力时，膜的延伸阻力的测量值。 虽然可以在任何指定力下确定模量，但初始模量是最常用的值。 5.6 从工作到休息 取决于力与伸长率的关系。它是衡量纺织结构吸收机械能的能力。 断裂韧性 是单位质量的断裂功。 5.7 最终产品的形状、尺寸和内部结构会对产品性能产生显著影响。因此，不可能仅从增强材料方面评估最终产品的性能。 5.8 如果两个实验室（或更多实验室）的报告测试结果之间存在实际意义上的差异，则应进行比较测试，以确定它们之间是否存在统计偏差，并使用适当的统计协助。 至少，应使用尽可能均匀的测试样品，从获得不同测试结果的材料中提取，并以相同数量随机分配给每个实验室进行测试。具有既定测试值的其他材料可用于此目的。应使用未配对数据的统计测试，在测试系列之前选择的概率水平上，比较两个实验室的测试结果。如果发现偏差，必须找到并纠正其原因，或者考虑到已知偏差，调整未来的测试结果。

1.1 These test methods cover the tensile testing of high performance polyethylene films. The methods include testing procedure only and include no specifications or tolerances. 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 exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.3 This standard includes the following test methods: Section Breaking Force 11 Breaking Tenacity 12 Toughness at Break 17 Elongation at Break 13 Force at Specified Elongation (FASE) 14 Linear Density 10 Modulus 15 Work-to-Break 16 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 The levels of tensile properties obtained when testing high performance polyethylene films are dependent on the age and history of the specimen and on the specific conditions used during the test. Among these conditions are rate of stretching, type of clamps, gauge length of specimen, temperature and humidity of the atmosphere, rate of airflow across the specimen, and temperature and moisture content of the specimen. Testing conditions accordingly are specified precisely to obtain reproducible test results on a specific sample. 5.2 Breaking force is used in engineering calculations when designing various types of products. When needed to compare intrinsic strength characteristics, films of different sizes or different types of film, breaking tenacity is very useful because, for a given type of film, breaking force is approximately proportional to linear density. 5.3 Elongation of film is taken into consideration in the design and engineering of reinforced products because of its effect on uniformity of the finished product and its dimensional stability during service. 5.4 The FASE is used to monitor changes in characteristics of the material during the various stages involved in the processing. 5.5 Modulus is a measure of the resistance of film to extension as a force is applied. Although modulus may be determined at any specified force, initial modulus is the value most commonly used. 5.6 Work-to-break is dependent on the relationship of force to elongation. It is a measure of the ability of a textile structure to absorb mechanical energy. Toughness at break is work-to-break per unit mass. 5.7 Shape, size, and internal construction of the end-product can have appreciable effect on product performance. It is not possible, therefore, to evaluate the performance of end product in terms of the reinforcing material alone. 5.8 If there are differences of practical significance between reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, test samples should be used that are as homogeneous as possible, that are drawn from the material from which the disparate test results were obtained, and that are randomly assigned in equal numbers to each laboratory for testing. Other materials with established test values may be used for this purpose. The test results from the two laboratories should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series. If a bias is found, either its cause must be found and corrected, or future test results must be adjusted in consideration of the known bias.