Study On Broussonetia Papyrifera Fiber Reinforced Resin Matrix Composite

Now the global non-renewable resources are growing more and more shortage. Andthe industrialization process accelerates the environmental pollution. Non-degradable plas-tics are abundantly used, which results more and more worse pollution in our daily life.From the long-term development, it has fundamental research significance for people tofind new material that can substitute for non-renewable materials and traditional plastics.The development of superior performance and bio-degradable composite is an effectiveinitiative to solve the material shortage and pollution problem at present and future. Nowdomestic and overseas scientists have explored the feasibility of the plant fiber thermoplas-tic resin composites as biodegradable materials. Therefore, using plant fibers and thermo-plastic resin composite to form new biodegradable materials has become an important re-search topic in the field of composite materials, and that has the epoch-making andlong-term significance.Broussonetia papyrifera fiber has been used as reinforcing body, and the polypropyl-ene has been selected as the matrix material, we developed broussonetia papyrifera fiberreinforced polypropylene-based composite materials by extrusion molding process. Thepaper discussed interfacial compatibility between broussonetia papyrifera fiber and poly-propylene. Effective measures to improve compatibility have been put forward. Duringcomposite process, we take interactive orthogonal experiment to manufacture broussonetiapapyrifera fiber composites, the primary and secondary order of factors that influence themechanical properties of the fiber composite material has been confirmed by range analy-sis, and the notable factors by variance analysis has been acquired. We explored the majorfactors affecting the mechanical properties on the papyrifera fiber composite by the picto-rial diagram. In order to determine the optimum composite molding process conditions andparameters, we provide firm theoretical basis and abundant experimental data for the pa-pyrifera fiber composite industrialization.Through the orthogonal experiment, we find that the optimum conditions of brous-sonetia papyrifera fiber composite include: residence time10min, head pressure30MPa,barrel temperature180°C, fiber content40%, MAPP content5%. The broussonetia pa-pyrifera fiber composites we made, has its mean tensile strength of26.04MPa, bendingstrength about63.87MPa, elastic modulus at4092MPa, impact strength on6.04kJï¹'m^-2,elongation at break about2.582%. Stability test and performance evaluation show its me-chanical properties are better than resin based wood plastic composite, and can rival sometraditional plastics. This new materials will take a lot more advantages and have broadprospects in many field.