碳纤维增强木基复合材料的制备及其力学性能

为了研究碳纤维增强木基复合材料的力学性能，选择直径为12 μm的碳纤维制备试样。分别对碳纤维增强木基复合材料与木纤维板进行了三点弯曲力学性能测试，运用扫描电镜（SEM）对其微观结构进行表征。结果表明:通过力学曲线对比及断裂机理分析，可以明显的发现碳纤维增强木基复合材料的力学性能要优于木纤维板，这种“三明治”结构的材料设计充分发挥出碳纤维独特的缓冲能力，试件在较高外加载荷作用下并不是产生突然的断裂破坏，而是具有一定的承载能力。SEM分析表明，聚醋酸乙烯胶粘剂工作强度高，在受力时能够很好的传递载荷，碳纤维网与木纤维板结合良好。

The Preparation and Mechanical Properties of Wood-based Composite Materials Reinforced by Carbon Fiber

In order to study the mechanical properties of wood-based composite materials reinforced by carbon fiber, the paper selected the carbon fibers with a diameter of 12 μm to prepare test specimens. The three-point bending mechanical tests were taken respectively between the wood-based composite materials reinforced by fiberglass and the wood fiberboard. The three-point bending mechanical tests were taken respectively between the wood-based composite materials reinforced by carbon fiber and the wood fiberboard, which was used to characterize its microstructure by scanning electron microscopy (SEM). It could obviously discover that the mechanical properties of wood-based composite materials reinforced by carbon fiber were superior to wood fiberboard’s by the comparison of mechanics curve and the analysis of fracture mechanism. The design of the material with this “sandwich” structure fully reflected the unique buffering capacity of fiberglass, so the specimen at high applied loads did not produce a sudden fracture failure, however it had a certain carrying capacity. The SEM analysis demonstrated that polyvinyl acetate adhesives had high work intensity. When stressed, it could be a good transfer loads to make good combination with carbon fiber mesh and wood fiberboard.