中文摘要：

选用5种不同树种木粉与PVC制备木塑复合材料,通过人工模拟加速试验对比研究不同组别复合材料对采绒革盖菌和绵腐卧孔菌的天然耐腐性差异,采用扫描电镜（SEM）和水分吸附测试深入分析腐朽菌对复合材料微观形貌及界面结合的影响,结果表明：不同组别复合材料对彩绒革盖菌耐腐性排序为：杉木/PVC〉马尾松/PVC〉白千层/PVC〉枫香/PVC〉尾巨桉/PVC复合材料;对绵腐卧孔菌耐腐性排序为：杉木/PVC〉尾巨桉/PVC、白千层/PVC、马尾松/PVC〉枫香/PVC复合材料。腐朽菌菌丝可通过木粉和PVC树脂界面结合空隙处进入试样内部进行侵蚀,从而降低复合材料间的界面结合,使其水分吸附率明显增加。

英文摘要：

Five wood species were selected for preparing wood flour/PVC composites. The natural decay resistances on the wood flour/PVC composites made by various wood species with Coriolus versioolor and Poria vaporaria were studied by artificial accelerating test. Moreover, the micro-morphology and interfacial bonding of composites specimens were analyzed by scanning electron microscope and water absorption rate testing. The results showed that the decay resistances of different group specimens for Coriolus versioolor were ranked as：Cunninghamia lanceolata/PVC 〉 Pinus massoniana/PVC 〉 Melaleuca leucadendra/PVC 〉 Liquidambar formosana/PVC 〉 Eucalyptus grandis xE.urophylla/PVC, the decay resistances of different group specimens for Poria vaporaria were ranked as： Cunninghamia lanceolata/PVC 〉 Eucalyptus grandis xE.urophylla/PVC, Melaleuca leucadendra/PVC, Pinus massoniana/PVC 〉 Liquidambar formosana/PVC. Some hypha of decay fungi could enter the inner of composites from the gap of interface of wood flour and PVC resin and gradually weaken the interfacial bonding of composites, which led to the high water absorption rates for different group composites.