为了提高生物质材料利用效率和节约能源，项目利用木质原料具有丰富孔隙结构的特点，将木质纤维素作为多孔基体对有机固-液相变材料进行封装定形。重点研究以下内容：（1）有机固-液相变材料的筛选与复合，通过对相变温度、相变潜热、导热和膨胀系数、热稳定性等基本热性能的测试，揭示结构-性能关系的基本规律；（2）研究木质纤维素颗粒、孔径大小、内部空隙尺寸与负载相变材料关系；研究相变材料的封装定形方法、温控储能机理、热降解机理和物理力学性能等；（3）采用加速老化测试结合Fick扩散理论和达西定律，模拟和预测不同因素对相变储能材料在长期使用过程中液相泄漏行为的影响。（4）建立生物质材料负载有机酸类室温相变材料的制备技术、相变材料泄漏控制理论体系，揭示其温控相变储能机理。

In order to improve bio-material energy efficiency and energy savings, this project utilize the features of wood material with rich porous structures, to encapsulate organic solid-liquid phase change material, then wood cellulose based form-stable phase change materials will be prepared. Focus on the following contents: （1）Screening of organic solid-liquid phase change material, phase change temperature, latent heat storage capacities, thermal conductibility and coefficient of thermal expansion, thermal stability etc. To reveals the basic.relationships between structure and property; （2）To study the relationship of wood cellulose particle，size distribution，internal void fraction and properties for phase change material. （3）By the accelerated aging test combined with Fick Diffusion Theory and Darcy's Law, to simulate and predict liquid leakage behavior of phase change material for different factors over a long period. （4）To establish preparation technology of phase change materials and phase change material leakage control system,phase change energy storage mechanism will be revealed at temperature controlling.