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Development of Bionic Lightweight Basalt Fiber Reinforced Wood Plastics Composite Materials

Author: GuanSuJun
Tutor: ChenJinXiang
School: Zhejiang University of Technology
Course: Materials Science
Keywords: Biomimetic Light-weight Basalt fiber Wood plastics composites Mechanical properties
CLC: TB332
Type: Master's thesis
Year: 2011
Downloads: 72
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Abstract


Based on frontier bionic, through multidisciplinary, and under the guidance of lightweight design of the organism, this paper firstly chooses the new eco basalt fiber (BF) to reinforce emerging environmentally friendly wood-plastic material (WPC), and launches the study of a new eco-composite material (BF-WPC). This study not only successfully explores the development of BF-WPC, by taking full advantage of the lab`s solid biomimetic foundation and interdisciplinary, but also observes the new microstructure in the front wing, and proposes the important integrate preparation of panel with the honeycomb.(1) About the forewing of beetle: Reviewed and deepen the studied about the basis of bionic -the structure in the fore wing of beetle. First observed the fiber arrangement of cross-linked network, also verified and inherited the excellent lightweight integrated structure of "columniation-honeycomb" core the lab`s proposed. This paper summed up the two biological approaches of "fill up" and "best effect" by the shape cross-section of fiber and its arrangement in the fore wing of beetle, which determined the guiding principles for bionic research of this paper.(2) Explore of the better length of BF and its content in BF-WPC: In the context of not add any additives, reinforced WPC with short cut BF, which the length is 3, 6, 9 and 12mm. Experimental results show that BF can play a significant enhancement, also exist the phenomenon of max value between the content of BF and mechanical properties of BF-WPC. And this paper successfully explained such phenomenon by proposing the qualitative hypothesis of "weak end". For a better length and content range of short cut BF, when the content of 12mm BF is 30%, it exists more "weak end"; while the content of 12mm BF is 30%, which may easily cause uneven distribution of fibers. The results show that when the content range of 6mm BF is 18-24%, the increased rate of mechanical properties reaches its max. The reason may be as follows: the quantity of weak end of 6mm BF is half to that of 3mm, while the length is also half to that of 12mm. At this point, it takes the strengths of both, and obtains the best enhancement. (3) Explore of the better content of compatibilizer: With the 6mm BF content of 18% and 24% reinforced WPC, the results show that both of them obtain the max value when the content of MAPE is the range of 6-10%. From the fracture section of samples, without adding MAPE, the surface of BF is smooth. While the surface of BF is fuzzy when adding a certain amount of MAPE, which forming a special interface layer on the surface, and effectively increasing the binding force between the BF and the WPC, which improved the mechanical properties.(4) About reinforcing BF-WPC with the fiber mesh: The experiments of reinforced BF-WPC confirmed the structure of fiber mesh could effectively reinforce the mechanical properties of BF-WPC.(5) About bionic study of lightweigh three-dimensional structure: First integrate prepared "columniation-honeycomb" plate with epoxy resin reinforced by BF, and successfully distributed the long and short reinforced fiber in the composite plates. This technology could end the history of multi-body honeycomb forming panel with honeycomb, and it has good integrity, without bond, easy to industrialization.

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