正交胶合木胶合性能研究现状及展望

胶合性能是胶合木制品的重要性能之一。在正交胶合木（CLT）中木材特征、胶黏剂性能以及木材与胶黏剂之间界面性能共同决定了正交胶合木的胶合性能。木材作为一种天然各向异性材料，其纹理方向不同，造成组坯方式对于胶合性能影响巨大。在胶合性能测试中，取样尺寸、取样形状对于胶合性能的测试结果都有一定的影响。胶合界面性能表征方面的研究正逐渐兴起，但是针对CLT胶合界面性能表征的相关研究报道并不多。有关CLT胶合的研究多集中在胶黏剂和胶合工艺方面，而针对不同锯材单元的特性对胶合性能尤其是耐久性影响的研究尚少有报道。文中基于现有研究对CLT胶合界面性能影响因素进行总结，梳理对比CLT胶合性能测试方法以及胶合界面性能表征技术，并对今后研究方向提出意见和建议。

Research Status and Prospect of Gluing Performance of Cross Laminated Timber

Gluing property is one of the important properties of gluing wood products. The timber characteristic, adhesive properties and the interfacial properties between wood and adhesives determine the gluing properties of cross laminated timber (CLT). Wood is a kind of natural heterogeneous material, and its different grain directions make the way of plywood assembly have a great influence on the CLTs''gluing performance. The sample size and sample shape have a certain influence on the test results of the gluing performance testing. The research on the interfacial gluing performance characterization is on the rise, but there are few reports on the interfacial gluing performance characterization of CLT. The research on CLT gluing is mainly focused on adhesives and gluing process rather than on the influence of the characteristics of different sawnwood units on the gluing performance, especially the durability. Based on the existing research, this paper summarizes the factors affecting the interfacial gluing performance of CLT, reviews and compares the test methods of CLT gluing performance, and puts forward suggestions for the future research direction.