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现行 ASTM D3929-03(2023)
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Standard Test Method for Evaluating Stress Cracking of Plastics by Adhesives Using the Bent-Beam Method 用弯曲梁法用胶粘剂评定塑料应力开裂的标准试验方法
发布日期: 2023-05-01
1.1 本试验方法描述了一种根据粘合剂是否会导致应力样品破裂来确定粘合剂与塑料相容性的程序。 1.2 给出了试样配置和测试夹具设计。 1.3 该测试方法适用于片状或条状产品。它也可以用于注射成型的拉伸试样或弯曲钢筋。 1.4 以国际单位制表示的数值应视为标准。括号中给出的英寸磅单位仅供参考。 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)。本标准的使用者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》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 本试验方法旨在对塑料和粘合剂的相容性进行定性评估。由于与塑料零件制造相关的许多工艺变量,因此不可能将此测试用作实际零件兼容性测试的替代品。 5.2 裂纹或裂纹的检测可以在有或没有光学辅助的情况下确定。 仅在采用等效灵敏度的裂纹检测方法的试验之间进行比较。
1.1 This test method describes a procedure for determining the compatibility of adhesives with plastics based on whether the adhesive causes cracking of stressed samples. 1.2 Specimen configurations and test fixture designs are given. 1.3 This test method is suitable for products in the form of sheet or strip. It can also be used on injection molded tensile specimens or flexural bars. 1.4 The values stated in SI units are to be regarded as the standard. The inch-pound units 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 This test method is designed for obtaining a qualitative estimate of the compatibility of plastics and adhesives. Due to the many process variables associated with the fabrication of plastic parts, it is not possible to use this test as a substitute for compatibility tests on actual parts. 5.2 The detection of cracks or crazes may be determined with or without optical aid. Make comparisons only among tests employing crack detection methods of equivalent sensitivity.
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归口单位: D14.40
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