摘要：人工速生材是制备多层板的主要材料来源，但速生材往往耐久性差，易开裂变形，也限制着板材的使用寿命。经完全炭化处理后的板材尺寸稳定性提高，但力学性能下降。为了兼顾板材炭化处理的优势以及力学强度，同时减少全部炭化所造成的能量损失，在已有实验研究的基础上，进一步探究炭化温度对未经完全炭化处理的板材的物理力学性能的影响，有着重要的意义。
关键词：表板；炭化温度；多层板；力学性能
Effect of Surface Carbonization Temperature on Mechanical Properties of Multilayer Boards
ABSTRACT
Artificial fast-growing wood is the main material source of producing multilayer board, but the fast-growing wood is often poor in durability, easy to crack and deform, which also limits the service life of the board. The dimension stability of the carbonized sheet is improved, but the mechanical properties are decreased. In order to take into account the advantages and mechanical strength of plate carbonization and reduce the energy loss caused by all carbonization, it is of great significance to further explore the influence of carbonization temperature on the physical and mechanical properties of plates not completely carbonized on the basis of existing experimental research.
Key words：table board; charring temperature; multilayer board; mechanical properties
1 引言
多层板也称胶合板，一般由木头经旋切或刨切成薄木块，再经加压胶合制成人造板材。胶合板多为奇数层单板胶合，其中以三合板和五合板最为常见。人工林是我国胶合板材料的主要来源，但速生材往往耐久性差，易开裂变形，限制了胶合板的使用寿命。
炭化处理是一连串的物质分解及聚合反应，经炭化处理后的木材，含水率降低，耐潮、耐腐，纹理清晰，尺寸稳定性提高。因此可通过炭化技术对易变形、不耐久的速生材进行改性处理，从而改善以速生材为基材制备的胶合板的耐久性和尺寸稳定性，扩大板材的适用范围[[1]][[2]]。
