仿生鳃金龟外甲壳玻璃纤维增强复合材料的研究

Bionic Research of GFRP Based on the Elytra of Gill Beetles

运用扫描电镜实验观察鳃金龟外甲壳内部的微结构,发现其类似于纤维增强复合材料,具有几丁质纤维增强角质化蛋白质基体的结构特征。仔细观察发现其中存在网络状的纤维非均匀铺层。针对发现的非均匀纤维铺层结构,仿生制备具有类似结构的网络筋织物增强GFRP。结果表明:非均匀的纤维铺层结构能较好地改善单层GFRP的拉伸强度和弯曲强度,使其具有较高的弯曲强度和稳定性,可用较少的材料承担较大的载荷。

Using the scanning electron microscopy to observe the micro-structure of the elytra of Gill Beetles, it is found that chitin fiber-reinforced skin of the protein structure is similar to man-made fiber reinforced composite materials. Further observing the micro-structure of the elytra of Gill Beetles and the authors find that it has characteristics of the non-uniform distribution of inter-laminar fiber diameter. According to the characteristics of optimized structure of the elytra of Gill Beetles, the paper prepares the bionic composite which has the similar structure to the biomaterials. The results show that the networklike structure of non-uniform distribution of inter-laminar fiber diameter not only can improve the tensile strength and bending strength of single-plate composite effectively, but also can make such materials better stable than before.