1.1 本标准描述了一种测试方法，用于评估平面粘合剂在环境温度和高温下相对于实木在相同条件下的性能的比较剪切强度。试验方法基于试样暴露于环境温度或恒定高温下一段规定时间后的断裂载荷，如第节所述 7 本标准不排除开发和实施其他方法，这些方法可提供满足本方法意图的等效性能。 1.2 本试验方法旨在根据试验方法评价可用于组装试样的粘合剂 D905 其他类型的粘合剂，如用于基于线的产品的粘合剂系统的评估超出了本测试方法的范围，除非如中所述 1.4 . 1.3 本试验方法用于在高温下评价作为层压木制品组分的粘合剂。防火层压木制品或组件的防火性能评估超出了本试验方法的范围。 1.4 该测试方法可用于通过用基于股的复合材料试样代替粘合试样来评估用于基于股的结构木材复合材料(例如定向股木材(OSL)和层压股木材(LSL))中的粘合剂的热耐久性。 1.5 应评估供应给层压木制品制造商的粘合剂的配方。对粘合剂配方的修改需要单独评估，除非得到层压木制品制造商、合格机构和代码评估机构的批准。1.6 以SI单位表示的值应被视为标准。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性问题（如果有）。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法规限制的适用性。 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《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====== 4.1 测试方法中讨论了通过压缩载荷测量剪切粘合强度特性的相关问题和局限性 D905 . 4.2 虽然可以使用试验温度和热暴露持续时间的各种组合，但 7.2.4 应基于这样一种理解，即本试验方法的目的是在木材开始燃烧之前评估粘合剂粘合性能，并且当考虑到特定产品及其最终用途时，选择升高的温度略低于木材的无人引燃温度。 4.3 当使用该试验方法时，应考虑独特的生产条件，如木材含水量、施加的铺展速率、压力和粘合剂的固化温度。

1.1 This standard describes a test method for evaluating the comparative shear strength of a planar adhesive bond at both ambient and elevated temperatures relative to the performance of solid wood under the same conditions. The test method is based on the breaking load after the specimen is exposed to either ambient or a constant elevated temperature for a specified duration as described in Section 7 . This standard does not preclude the development and implementation of other methods that provide equivalent performance meeting the intent of this method. 1.2 This test method is intended for the evaluation of adhesives that can be used to assemble test specimens in accordance with Test Method D905 . The evaluation of other types of adhesives, such as the binder systems used for strand-based products, is beyond the scope of this test method, except as noted in 1.4 . 1.3 This test method is intended for the evaluation of adhesives as a component of laminated wood products at elevated temperatures. The evaluation of fire performance on fire-rated laminated wood products or assemblies is beyond the scope of this test method. 1.4 This test method may be used for the evaluation of heat durability for binder adhesives used in strand-based structural wood composites, such as oriented strand lumber (OSL) and laminated strand lumber (LSL), by substituting strand-based composite specimens for the bonded specimens. 1.5 The formulation of adhesive supplied to the manufacturer of laminated wood products shall be evaluated. Modifications to the adhesive formulation require a separate evaluation unless approved by the manufacturer of the laminated wood product, qualified agency, and code evaluation agency. 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 ====== 4.1 A discussion of the issues and limitations associated with the measurement of strength properties of adhesive bonds in shear by compression loading is found in Test Method D905 . 4.2 While various combinations of test temperature and heat exposure duration can be used, the provisions specified in 7.2.4 shall be based on the understanding that the objective of this test method is to evaluate adhesive bond performance just before wood begins to burn and the elevated temperature is selected to be slightly below the unpiloted ignition temperature for wood when taken into account the specific product and its end-use applications. 4.3 When using this test method, consideration shall be given to the unique production conditions, such as wood moisture content, applied spread rate, press pressure, and curing temperature of the adhesive.