CAJ | 학술논문

利用时域核磁共振(TD-NMR)技术，为研究人造板和水分的关系提供新方法。该文通过研究胶合板(Plywood)、刨花板(Particle board)、中密度纤维板(Medium Density Fiberboard)3种常用人造板吸水过程中水分的自由感应衰减(FID)信号的变化，得出传统称重法得到的吸水率与吸水过程中测得的FID信号高度线性相关，24 h吸水率由大到小依次为胶合板>刨花板>中密度纤维板。通过3种人造板24 h吸水过程中自旋-自旋弛豫时间(T2)大小及分布的实验数据，分析了吸水过程中人造板中水分的状态。实验结果证实了TD-NMR是研究人造板与水分的关系的一个有效手段。
이용시역핵자공진(TD-NMR)기술，위연구인조판화수분적관계제공신방법。해문통과연구효합판(Plywood)、포화판(Particle board)、중밀도섬유판(Medium Density Fiberboard)3충상용인조판흡수과정중수분적자유감응쇠감(FID)신호적변화，득출전통칭중법득도적흡수솔여흡수과정중측득적FID신호고도선성상관，24 h흡수솔유대도소의차위효합판>포화판>중밀도섬유판。통과3충인조판24 h흡수과정중자선-자선이예시간(T2)대소급분포적실험수거，분석료흡수과정중인조판중수분적상태。실험결과증실료TD-NMR시연구인조판여수분적관계적일개유효수단。
Time-domain nuclear magnetic resonance (TD-NMR) technology may provide a new method to study water absorption in wood-based panels. We measured changes of free induction decay (FID) signal of water in plywood, particle board and medium density fiberboard after a 24-hour soaking process, and the results were correlated to water contents calculated with the traditional weighing method. The amount of water absorption was plywood > particleboard > medium density fiberboard. The state of water in the panels was analyzed by spin-spin relaxation time (T2) measurements. The result suggested that NMR is an effective tool to study the relationship between wood-based panels and water.