1.1本试验方法包括测定粘接到柔性基材上的粘合剂膜的柔韧性。结果有助于比较胶粘剂的柔韧性，而不是胶粘剂的绝对特性。 1.2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。 1.3 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和健康实践，并确定监管限制的适用性。 ====意义和用途====== 心轴弯曲试验简单快速。它只需要很少的设备投资和很少的操作员培训。主要目的是确定涂覆在基材上的粘合剂膜是否满足灵活性要求。 该测试也有助于比较粘合剂的柔韧性。它可以通过比较各种配方的灵活性来设计粘合剂，以满足特定的最终用途参数。通过将试验装置和试样调节到所需温度并在这些条件下进行试验，可以在环境温度以外的温度下测定粘合剂的柔韧性。

1.1 This test method covers the determination of the flexibility of an adhesive film bonded to a flexible substrate. The results are useful for comparing flexibility of adhesives and not for absolute characterization of adhesives. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information purposes only. 1.3 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== The mandrel bend test is simple and fast. It requires little investment in equipment and little operator training. The prime purpose is to determine whether a film of adhesive coated on a substrate meets flexibility requirements. The test is also useful for comparing flexibility of adhesives. It can be used to design adhesives by comparing the flexibility of various formulations to meet specific end-use parameters. The adhesive flexibility can be determined at temperatures other than ambient by conditioning the test apparatus and test specimen at the desired temperature and performing the test under those conditions.